Payasada Kotrappa

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Olean, NY, US

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Patents Grantslast 30 patents

Information Patent Grant
Radon progeny monitor
- Patent number 7,312,439
- Issue date Dec 25, 2007
- Rad Elec Inc.
- Payasada Kotrappa
- G01 - MEASURING TESTING
Information Patent Grant
Small volume ion chamber
- Patent number D327121
- Issue date Jun 16, 1992
- Rad Elec, Inc.
- Robert W. Ramsey
- D23 - Environmental heating and cooling
Information Patent Grant
Electret ionization chamber for monitoring radium and dissolved rad...
- Patent number 5,055,674
- Issue date Oct 8, 1991
- Rad Elec, Inc.
- Payasada Kotrappa
- G01 - MEASURING TESTING
Information Patent Grant
Electret ion chamber for radon monitoring
- Patent number 4,992,658
- Issue date Feb 12, 1991
- Rad Elec Inc.
- Robert W. Ramsey
- G01 - MEASURING TESTING
Information Patent Grant
Ionization chamber for monitoring radioactive gas
- Patent number 4,853,536
- Issue date Aug 1, 1989
- Rad Elec Inc.
- John C. Dempsey
- G01 - MEASURING TESTING
Information Patent Grant
Subsoil radioactive gas measuring system
- Patent number 4,814,608
- Issue date Mar 21, 1989
- Rad Elec Inc.
- John C. Dempsey
- G01 - MEASURING TESTING