0462795 – July 16, 1891 – Method Of Producing Rain-Fall 803180 – October 31, 1905 – Means for Producing High Potential Electrical Discharges 1103490 – August 6, 1913 – Rain-Maker 1225521 – September 4, 1915 – Protecting From Poisonous Gas In Warfare 1279823 – September 24, 1918 – Process and Apparatus for Causing Precipitation by Coalescence of Aqueous Particles Contained in the Atmosphere 1284982 – November 19, 1918 – Process and Apparatus for Procuring and Stimulating Rainfall 1338343 – April 27, 1920 – Process And Apparatus For The Production of Intense Artificial Clouds, Fogs, or Mists 1358084 – November 9, 1920 – Method of Producing Fog-Screens 1619183 – March 1, 1927 – Process of Producing Smoke Clouds From Moving Aircraft 1665267 – April 10, 1928 – Process of Producing Artificial Fogs 1892132 – December 27, 1932 – Atomizing Attachment For Airplane Engine Exhausts 1895765 – January 31, 1933 – Artificial Production of Fog 1928963 – October 3, 1933 – Electrical System And Method 1957075 – May 1, 1934 – Airplane Spray Equipment 1993316 – March 5, 1935 – Apparatus for and Method of Producing Oil Fog 2052626 – September 1, 1936 – Method of Dispelling Fog 2097581 – November 2, 1937 – Electric Stream Generator – Referenced in 3990987 2173756 – September 19, 1939 – Process of Producing Fog or Mist by Partial and Flameless Combustion 2352677 – July 4, 1944 – Artificial Fog Production 2476171 – July 18, 1945 – Smoke Screen Generator 2409201 – October 15, 1946 – Smoke Producing Mixture 2480967 – September 6, 1949 – Aerial Discharge Device 2527230 – October 24, 1950 – Method of Crystal Formation and Precipitation 2527231 – October 24, 1950 – Method of Generating Silver Iodide Smoke 2550324 – April 24, 1951 – Process For Controlling Weather 2582678 – June 15, 1952 – Material Disseminating Apparatus For Airplanes 2611992 – September 30, 1952 – Engine Exhaust Operated Fluent Material Distributor 2614083 – October 14, 1952 – Metal Chloride Screening Smoke Mixture 2633455 – March 31, 1953 – Smoke Generator 2688069 – August 31, 1954 – Steam Generator – Referenced in 3990987 2721495 – October 25, 1955 – Method And Apparatus For Detecting Minute Crystal Forming Particles Suspended in a Gaseous Atmosphere 2730402 – January 10, 1956 – Controllable Dispersal Device 2903188 – April 2, 1956 – Control of Tropical Cyclone Formation 2756097 – July 24, 1956 – Process for Weather Control 2801322 – July 30, 1957 – Decomposition Chamber for Monopropellant Fuel – Referenced in 3990987 2835530 – May 20, 1958 – Process for the Condensation of Atmospheric Humidity and Dissolution of Fog 2871344 – January 27, 1959 – Long Distance Communication System 2881335 – April 7, 1959 – Generation of Electrical Fields 2908442 – October 13, 1959 – Method For Dispersing Natural Atmospheric Fogs And Clouds 2962450 – November 29, 1960 – Fog Dispelling Composition 2963975 – December 13, 1960 – Cloud Seeding Carbon Dioxide Bullet 3019989 – February 6, 1962 – Atmospheric Space Charge Modification 2986360 – May 30, 1962 – Aerial Insecticide Dusting Device 3046168 – July 24, 1962 – Chemically Produced Colored Smokes 3056556 – October 2, 1962 – Method of Artificially Influencing the Weather 3126155 – March 24, 1964 – Silver Iodide Cloud Seeding Generator 3127107 – March 31, 1964 – Generation of Ice-Nucleating Crystals 3131131 – April 28, 1964 – Electrostatic Mixing in Microbial Conversions 3140207 – July 7, 1964 – Pyrotechnic Composition 3174150 – March 16, 1965 – Self-Focusing Antenna System 3234357 – February 8, 1966 – Electrically Heated Smoke Producing Device 3274035 – September 20, 1966 – Metallic Composition For Production of Hydroscopic Smoke 3284005 – November 8,1966 – Weather Control by Artificial Means 3300721 – January 24, 1967 – Means For Communication Through a Layer of Ionized Gases 3313487 – April 11, 1967 – Cloud Seeding Apparatus 3338476 – August 29, 1967 – Heating Device For Use With Aerosol Containers 3375148 – March 26, 1968 – Pyrotechnics Comprising Silver Iodate, Ammonium Nitrate, Nitrocellulose and Nitrate Esters 3378201 – April 16, 1968 – Method for Precipitating Atmospheric Water Masses 3410489 – November 12, 1968 – Automatically Adjustable Airfoil Spray System With Pump 3418184 – December 24, 1968 – Smoke Producing Propellant 3429507 – February 25, 1969 – Rainmaker 3432208 – November 7, 1967 – Fluidized Particle Dispenser 3441214 – April 29, 1969 – Method And Apparatus For Seeding Clouds 3445844 – May 20, 1969 – Trapped Electromagnetic Radiation Communications System 3456880 – July 22, 1969 – Method Of Producing Precipitation From The Atmosphere 3518670 – June 30, 1970 – Artificial Ion Cloud 3517512 – June 30, 1970 – Apparatus for Suppressing Contrails 3534906 – October 20, 1970 – Control of Atmospheric Particles 3545677 – December 8, 1970 – Method of Cloud Seeding 3564253 – February 16, 1971 – System And Method For Irradiation Of Planet Surface Areas 3587966 – June 28, 1971 – Freezing Nucleation 3595477 – July 27, 1971 – Fog Dispersing Method and Compositions 3601312 – August 24, 1971 – Methods of Increasing The Likelihood oF Precipitation By The Artificial Introduction Of Sea Water Vapor Into The Atmosphere Winward Of An Air Lift Region 3608810 – September 28, 1971 – Methods of Treating Atmospheric Conditions 3608820– September 20, 1971 – Treatment of Atmospheric Conditions by Intermittent Dispensing of Materials Therein 3613992 – October 19, 1971 – Weather Modification Method 3630950 – December 28, 1971 – Combustible Compositions For Generating Aerosols, Particularly Suitable For Cloud Modification And Weather Control And Aerosolization Process USRE29142 – May 22, 1973 – Combustible compositions for generating aerosols, particularly suitable for cloud modification and weather control and aerosolization process 3659785 – December 8, 1971 – Weather Modification Utilizing Microencapsulated Material 3666176 – March 3, 1972 – Solar Temperature Inversion Device 3677840 – July 18, 1972 – Pyrotechnics Comprising Oxide of Silver For Weather Modification Use 3690552 – September 12, 1972 – Fog Dispersal 3722183 – March 27, 1973 – Device For Clearing Impurities From The Atmosphere 3748278 – July 24, 1973 – Process and Agents Having an Influence on the Weather 3751913 – August 14, 1973 – Barium Release System 3769107 – October 30, 1973 – Pyrotechnic Composition For Generating Lead Based Smoke 3784099 – January 8, 1974 – Air Pollution Control Method 3785557 – January 15, 1974 – Cloud Seeding System 3788543 – January 29, 1974 – Uniform Size Particle Generator 3795626 – March 5, 1974 – Weather Modification Process 3802971 – April 9, 1974 – Pyrotechnic Formulations for Weather Modification Comprising a Mixture of Iodates 3808595 – April 30, 1974 – Chaff Dispensing System 3813875 – June 4, 1974 – Rocket Having Barium Release System to Create Ion Clouds In The Upper Atmosphere 3835059 – September 10, 1974 – Methods of Generating Ice Nuclei Smoke Particles For Weather Modification And Apparatus Therefore 3835293 – September 10, 1974 – Electrical Heating Apparatus For Generating Super Heated Vapors 3858805 – January 7, 1975 – Ice Nucleation by Micas 3877642 – April 15, 1975 – Freezing Nucleant 3882393 – May 6, 1975 – Communications System Utilizing Modulation of The Characteristic Polarization of The Ionosphere 3887580 – June 3, 1975 – Method of Crystallization of Water in Supercooled Clouds and Fogs and Reagent Useful in Said Method 3896993 – July 29, 1975 – Process For Local Modification of Fog And Clouds For Triggering Their Precipitation And For Hindering The Development of Hail Producing Clouds 3899129 – August 12, 1975 – Apparatus for generating ice nuclei smoke particles for weather modification 3899144 – August 12, 1975 – Powder contrail generation 3915379 – October 28, 1975 – Method of Controlling Weather 3940059 – February 24, 1976 – Method For Fog Dispersion 3940060 – February 24, 1976 – Vortex Ring Generator 3990987 – November 9, 1976 – Smoke generator 3992628 – November 16, 1976 – Countermeasure system for laser radiation 3994437 – November 30, 1976 – Broadcast dissemination of trace quantities of biologically active chemicals 4042196 – August 16, 1977 – Method and apparatus for triggering a substantial change in earth characteristics and measuring earth changes RE29,142 – February 22, 1977 – Combustible compositions for generating aerosols, particularly suitable for cloud modification and weather control and aerosolization process 4009828 – March 1 1977 – Organic Nucleating Agent for both Warm and Cold Clouds 4035726 – July 12, 1977 – Method of controlling and/or improving high-latitude and other communications or radio wave surveillance systems by partial control of radio wave et al 4096005 – June 20, 1978 – Pyrotechnic Cloud Seeding Composition 4129252 – December 12, 1978 – Method and apparatus for production of seeding materials 4141274 – February 27, 1979 – Weather modification automatic cartridge dispenser 4167008 – September 4, 1979 – Fluid bed chaff dispenser 4347284 – August 31, 1982 – White cover sheet material capable of reflecting ultraviolet rays 4362271 – December 7, 1982 – Procedure for the artificial modification of atmospheric precipitation as well as compounds with a dimethyl sulfoxide base for use in carrying out said procedure 4373391 – February 15, 1983 – Relative Humidity Sensitive Material 4396152 – August 2, 1983 – Aerosol Dispenser System 4402480 – September 6, 1983 – Atmosphere modification satellite 4412654 – November 1, 1983 – Laminar microjet atomizer and method of aerial spraying of liquids 4415265 – November 15, 1983 – Method and apparatus for aerosol particle absorption spectroscopy 4470544 – September 11, 1984 – Method of and Means for weather modification 4475927 – October 9, 1984 – Bipolar Fog Abatement System 4600147 – July 15, 1986 – Liquid propane generator for cloud seeding apparatus 4633714 – January 6, 1987 – Aerosol particle charge and size analyzer 4643355 – February 17, 1987 – Method and apparatus for modification of climatic conditions 4653690 – March 31, 1987 – Method of producing cumulus clouds 4684063 – August 4, 1987 – Particulates generation and removal 4686605 – August 11, 1987 – HAARP Patent / EASTLUND PATENT – Method and apparatus for altering a region in the earth’s atmosphere, ionosphere, and/or magnetosphere 4704942 – November 10, 1987 – Charged Aerosol 4712155 – December 8, 1987 – Method and apparatus for creating an artificial electron cyclotron heating region of plasma 4742958 – May 10, 1988 – Method for Making Artificial Snow 4744919 – May 17, 1988 – Method of dispersing particulate aerosol tracer 4766725 – August 30, 1988 – Method of suppressing formation of contrails and solution therefor 4829838 – May 16, 1989 – Method and apparatus for the measurement of the size of particles entrained in a gas 4836086 – June 6, 1989 – Apparatus and method for the mixing and diffusion of warm and cold air for dissolving fog 4873928 – October 17, 1989 – Nuclear-sized explosions without radiation 4948257 – August 14, 1990 – Laser optical measuring device and method for stabilizing fringe pattern spacing 1338343– August 14, 1990 – Process and Apparatus for the production of intense artificial Fog 4999637 – March 12, 1991 – Creation of artificial ionization clouds above the earth 5003186 – March 26, 1991 – Stratospheric Welsbach seeding for reduction of global warming 5005355 – April 9, 1991 – Method of suppressing formation of contrails and solution therefor 5038664 – August 13, 1991 – Method for producing a shell of relativistic particles at an altitude above the earths surface 5041760 – August 20, 1991 – Method and apparatus for generating and utilizing a compound plasma configuration 5041834 – August 20, 1991 – Artificial ionospheric mirror composed of a plasma layer which can be tilted 5056357 – October 15, 1991- Acoustic method for measuring properties of a mobile medium 5059909 – October 22, 1991 – Determination of particle size and electrical charge 5104069 – April 14, 1992 – Apparatus and method for ejecting matter from an aircraft 5110502 – May 5, 1992 – Method of suppressing formation of contrails and solution therefor 5156802 – October 20, 1992 – Inspection of fuel particles with acoustics 5174498 – December 29, 1992 – Cloud Seeding 5148173 – September 15, 1992 – Millimeter wave screening cloud and method 5242820 – September 7, 1993 – Army Mycoplasma Patent Patent 5245290 – September 14, 1993 – Device for determining the size and charge of colloidal particles by measuring electroacoustic effect 5286979 – February 15, 1994 – Process for absorbing ultraviolet radiation using dispersed melanin 5296910 – March 22, 1994 – Method and apparatus for particle analysis 5327222 – July 5, 1994 – Displacement information detecting apparatus 5357865 – October 25, 1994 – Method of cloud seeding 5360162 – November 1, 1994 – Method and composition for precipitation of atmospheric water 5383024 – January 17, 1995 – Optical wet steam monitor 5425413 – June 20, 1995 – Method to hinder the formation and to break-up overhead atmospheric inversions, enhance ground level air circulation and improve urban air quality 5434667 – July 18, 1995 – Characterization of particles by modulated dynamic light scattering 5436039 – July 25, 1995 – Artificial Snow in an Aggregate Form of Snow Granules 5441200 – August 15, 1995 – Tropical cyclone disruption 5492274 – February 20, 1996 – Method of and Means for Weather Modification 5546183 – August, 13, 1996 – LIDAR Droplet Size Monitor for In-Flight Measurement of Aircraft Engine Exhaust Contrails, Droplets and Aerosols 5556029 – September 17, 1996 – Method of hydrometeor dissipation (clouds) 5628455 – May 13, 1997 – Method and apparatus for modification of supercooled fog 5631414 – May 20, 1997 – Method and device for remote diagnostics of ocean-atmosphere system state 5639441 – June 17, 1997 – Methods for fine particle formation 5762298 – June 9, 1998 – Use of artificial satellites in earth orbits adaptively to modify the effect that solar radiation would otherwise have on earth’s weather 5800481 – September 1, 1998 – Thermal excitation of sensory resonances 5912396 – June 15, 1999 – System and method for remediation of selected atmospheric conditions 5922976 – July 13, 1999 – Method of measuring aerosol particles using automated mobility-classified aerosol detector 5949001 – September 7, 1999 – Method for aerodynamic particle size analysis 5984239 – November 16, 1999 – Weather modification by artificial satellites 6025402 – February 15, 2000 – Chemical composition for effectuating a reduction of visibility obscuration, and a detoxifixation of fumes and chemical fogs in spaces of fire origin 6030506 – February 29, 2000 – Preparation of independently generated highly reactive chemical species 6034073 – March 7, 2000 – Solvent detergent emulsions having antiviral activity 6045089 – April 4, 2000 – Solar-powered airplane 6056203 – May 2, 2000 – Method and apparatus for modifyi

full list here - https://www.toptal.com/developers/paste-gd/XxRCT6aS#