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Trademarks = 3

Forward Citations = 95

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6 inventors (with patents filed for the assignee):

Payasada Kotrappa (6 out of 6 patents)

John C Dempsey (6 out of 10 patents)

Lorin R Stieff (6 out of 16 patents)

4. Robert W Ramsey, Jr (4 out of 5 patents)

5. Frederick Stieff (1 out of 1 patent)

6. Paul R Ramsey (1 out of 1 patent)

14 patents: Sort by Forward Citations

1. 8153959 - Measurement of undisturbed radon ground surface flux using a passive radon surface flux monitor (2012-04-10),

2. 7312439 - Radon progeny monitor (2007-12-25),

3. 5128540 - Gamma radiation compensated radon measurement system (1992-07-07),

4. 5126567 - Electret gamma/X-ray low level dosimeter (1992-06-30),

5. D327121 - Small volume ion chamber (1992-06-16),

6. 5107108 - Programmable controlled-exposure radon measurement system (1992-04-21),

7. 5055674 - Electret ionization chamber for monitoring radium and dissolved radon in (1991-10-08),

8. D318023 - Collapsible radon monitor (1991-07-09),

9. D318022 - Radon monitor (1991-07-09),

10. 5008540 - Electret gamma/X-ray low level dosimeter (1991-04-16),

11. 4992658 - Electret ion chamber for radon monitoring (1991-02-12),

12. 4926053 - Radon monitor (1990-05-15),

13. 4853536 - Ionization chamber for monitoring radioactive gas (1989-08-01),

14. 4814608 - Subsoil radioactive gas measuring system (1989-03-21),

Rad Elec Inc. is a leading provider of radiation detection and measurement equipment. With over 20 years of experience in the industry, we offer a wide range of innovative products designed to meet the needs of professionals in various sectors, including healthcare, security, and environmental monitoring. Our team of experts is dedicated to providing reliable and accurate solutions for detecting and measuring radiation levels, ensuring the safety and security of our customers.

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Company Badge

USPTO Data Jan 1 1976 - Jan 6 2026

14 Patents

#6 in Frederick, MD

#297 in Maryland

#21,655 in US

#40,961 in the World

Frederick, MD, United States of America

Rad Elec Inc.