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For the Inventor, By the Inventor

San Diego, CA, United States of America

Cryogen, Inc.


USPTO Granted Patents = 19

% Expired Patents = 5.3

Trademarks = 2

Forward Citations = 1,339

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16 inventors (with patents filed for the assignee):

goldMedal John Daniel Dobak, Iii (9 out of 115 patents)

silverMedal Xiaoyu Yu (5 out of 17 patents)

bronzeMedal Kambiz Ghaerzadeh (5 out of 7 patents)

4.  Hong Li (5 out of 12 patents)

5.  Ray Radebaugh (4 out of 6 patents)

6.  John D Dobak (4 out of 13 patents)

7.  Eric D Marquardt (4 out of 5 patents)

8.  Marcia L Huber (3 out of 3 patents)

9.  Steven W Kovalcheck (2 out of 21 patents)

10.  Eric Ryba (2 out of 10 patents)

11.  Terry L Brown (2 out of 2 patents)

12.  John Frederick Hayfield (2 out of 3 patents)

13.  David R Murray (1 out of 1 patent)

14.  Ravikumar V Kudaravalli (1 out of 1 patent)

15.  Daniel Taut (1 out of 1 patent)


19 patents:

1. 6572610 - Cryogenic catheter with deflectable tip (2003-06-03),
2. 6537271 - Balloon cryogenic catheter (2003-03-25),
3. 6530234 - Precooling system for Joule-Thomson probe (2003-03-11),
4. 6475212 - Cryosurgical probe with sheath (2002-11-05),
5. 6471694 - Control system for cryosurgery (2002-10-29),
6. 6471217 - Sealing assembly (2002-10-29),
7. 6451012 - Cryosurgical method for endometrial ablation (2002-09-17),
8. 6270494 - Stretchable cryoprobe sheath (2001-08-07),
9. 6241722 - Cryogenic device, system and method of using same (2001-06-05),
10. 6237355 - Precooled cryogenic ablation system (2001-05-29),
11. 6193644 - Cryosurgical probe with sheath (2001-02-27),
12. 6182666 - Cryosurgical probe and method for uterine ablation (2001-02-06),
13. 6151901 - Miniature mixed gas refrigeration system (2000-11-28),
14. 6074572 - Gas mixture for cryogenic applications (2000-06-13),
15. 6035657 - Flexible catheter cryosurgical system (2000-03-14),
Company Overview
Cryogen, Inc. is a technology company based in San Diego, California, specializing in advanced cryogenic solutions. The organization focuses on the development and manufacturing of innovative systems that utilize cryogenic processes for various applications, including medical devices and industrial technologies. With a commitment to enhancing performance and efficiency, Cryogen leverages its expertise in cryogenics to address complex challenges across multiple sectors, contributing to advancements in both healthcare and engineering fields.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 13 2026

19 Patents

#313 in San Diego, CA

#4,099 in California

#17,138 in US

#32,663 in the World

San Diego, CA (US)
San Diego, CA, United States of America

Cryogen, Inc.

Forward Citations = 1,339

16 inventors:

goldMedal John Daniel Dobak, Iii (9 out of 115 patents)

silverMedal Xiaoyu Yu (5 out of 17 patents)

bronzeMedal Kambiz Ghaerzadeh (5 out of 7 patents)

4.  Hong Li (5 out of 12 patents)

5.  Ray Radebaugh (4 out of 6 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Cryogen, Inc.. Retrieved from https://idiyas.com/company/cryogen

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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