US patents related to weather modification.
0462795 – July 16, 1891 – Method Of Producing Rain-Fall
1103490 – August 6, 1913 – Rain-Maker
1225521 – September 4, 1915 – Protecting From Poisonous Gas In Warfare
1338343 – April 27, 1920 – Process And Apparatus For The Production of Intense Artificial Clouds, Fogs, or Mists
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
1928963 – October 3, 1933 – Electrical System And Method
1957075 – May 1, 1934 – Airplane Spray Equipment
2097581 – November 2, 1937 – Electric Stream Generator – Referenced in 3990987
2409201 – October 15, 1946 – Smoke Producing Mixture
2476171 – July 18, 1945 – Smoke Screen Generator
2480967 – September 6, 1949 – Aerial Discharge Device
2550324 – April 24, 1951 – Process For Controlling Weather
2582678 – June 15, 1952 – Material Disseminating Apparatus For Airplanes
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
2801322 – July 30, 1957 – Decomposition Chamber for Monopropellant Fuel – Referenced in 3990987
2881335 – April 7, 1959 – Generation of Electrical Fields
2908442 – October 13, 1959 – Method For Dispersing Natural Atmospheric Fogs And Clouds
2986360 – May 30, 1962 – Aerial Insecticide Dusting Device
2963975 – December 13, 1960 – Cloud Seeding Carbon Dioxide Bullet
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
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
3300721 – January 24, 1967 – Means For Communication Through a Layer of Ionized Gases
3313487 – April 11, 1967 – Cloud Seeding App
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
5441200 – August 15, 1995 – Tropical cyclone disruption
5486900 – January 23, 1996 – Measuring device for amount of charge of toner and image forming apparatus having the measuring device
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 satellite
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 modifying supercooled clouds
6110590 – August 29, 2000 – Synthetically spun silk nanofibers and a process for making the same
6263744 – July 24, 2001 – Automated mobility-classified-aerosol detector
6281972 – August 28, 2001 – Method and apparatus for measuring particle-size distribution
6315213 – November 13, 2001 – Method of modifying weather
6382526 – May 7, 2002 – Process and apparatus for the production of nanofibers
6408704 – June 25, 2002 – Aerodynamic particle size analysis method and apparatus
6412416 – July 2, 2002 – Propellant-based aerosol generation devices and method
6520425 – February 18, 2003 – Process and apparatus for the production of nanofibers
6539812 – April 1, 2003 – System for measuring the flow-rate of a gas by means of ultrasound
6553849 – April 29, 2003 – Electrodynamic particle size analyzer
6569393 – May 27, 2003 – Method And Device For Cleaning The Atmosphere
0056705 A1 – March 17, 2005 – Weather Modification by Royal Rainmaking Technology
6890497 – May 10, 2005 – Method For Extracting And Sequestering Carbon Dioxide
7965488 – November 9, 2007 – Methods Of Removing Aerosols From The Atmosphere
8048309 – August 28, 2008 – Seawater-Based Carbon Dioxide Disposal
8012453 – October 27, 2008 – Carbon Sequestration And Production Of Hydrogen And Hydride
7645326 – January 12, 2010 – RFID environmental manipulation
7655193 – February 2, 2010 – Apparatus For Extracting And Sequestering Carbon Dioxide
8079545 – December 20, 2011 – Ground based Manipulation and Control of Aerial Vehicle during nonflying operations
0117003 – October 5, 2012 – Geoengineering Method Of Business Using Carbon Counterbalance Credits – alternate link
8373962 – February 12, 2013 – Charged seed cloud as a method for increasing particle collisions and for scavenging airborne biological agents and other contaminants