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

1631753 – June 7, 1927
– Electric Heater – Referenced in 3990987

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

2510867 – October 9, 1951
– Method of Crystal Formation and Precipitation

2582678 – June 15, 1952
– Material Disseminating Apparatus For Airplanes

2591988 – April 8, 1952
– Production of TiO2 Pigments
– Referenced in 3899144

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 – Referenced in 3990987

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 Apparatus

3338476 – August 29, 1967
– Heating Device For Use With Aerosol Containers – Referenced in 3990987

3410489 – November 12, 1968
– Automatically Adjustable Airfoil Spray System With Pump

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

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

3601312 – August 24, 1971
– Methods of Increasing The Likelihood oF Precipatation 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 – This patent is a reissue of patent US3630950 – 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

3722183 – March 27, 1973
– Device For Clearing Impurities From The Atmosphere

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

3795626 – March 5, 1974
– Weather Modification Process

3808595 – April 30, 1974
– Chaff Dispensing System

3813875 – June 4, 1974
– Rocket Having Barium Release System to Create Ion Clouds In The Upper Atmopsphere

3835059 – September 10, 1974
– Methods of Generating Ice Nuclei Smoke Particles For Weather Modification And
Apparatus Therefore

3835293 – September 10, 1974
– Electrical Heating Aparatus For Generating Super Heated Vapors – Referenced in 3990987

3877642 – April 15, 1975
– Freezing Nucleant

3882393 – May 6, 1975
– Communications System Utilizing Modulation of The Characteristic Polarization of The Ionosphere

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

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
– Reissue of: 03630950
– Combustible compositions for generating aerosols, particularly suitable for cloud modification and weather control and aerosolization process

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

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
– 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

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

48050 – August 14, 1990
– Liquid atomizing a94pparatus for aerial spraying

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

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
nd 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

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