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For the Inventor, By the Inventor

Toledo, OH, United States of America

Indugas, Inc.

Calculating rank
USPTO Granted Patents = 18

Forward Citations = 896

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7 inventors (with patents filed for the assignee):

goldMedal Klaus H Hemsath (18 out of 45 patents)

silverMedal Rodney G Whitbeck (1 out of 11 patents)

bronzeMedal James E Lyon (1 out of 3 patents)

4.  Mark G Shapona (1 out of 3 patents)

5.  Claude Melvin Mack (1 out of 3 patents)

6.  Arvind Chhotalal Thekdi (1 out of 1 patent)

7.  Ronald Scott Lucas (1 out of 1 patent)


18 patents:

1. 5997286 - Thermal treating apparatus and process (1999-12-07),
2. 5697778 - Daisywheel convector plate for batch coil annealing furnace (1997-12-16),
3. 5492168 - High convective heat transfer immersion heater/cooler (1996-02-20),
4. 5419699 - Seal arrangement for batch coil annealing furnace (1995-05-30),
5. 5297959 - High temperature furnace (1994-03-29),
6. 5295822 - Convective heat transfer by cascading jet impingement in a batch coil (1994-03-22),
7. 5290017 - Cooling cover for batch coil annealing furnace (1994-03-01),
8. 5249436 - Simplified, low cost absorption heat pump (1993-10-05),
9. 5228513 - Convective heat transfer by cascading jet impingement (1993-07-20),
10. 5224542 - Gas fired radiant tube heater (1993-07-06),
11. 5207972 - High temperature furnace (1993-05-04),
12. 5090891 - Hybrid combustion device and system therefor (1992-02-25),
13. 5082055 - Gas fired radiant tube heater (1992-01-21),
14. 5078368 - Gas fired melting furnace (1992-01-07),
15. 5020596 - Enhanced oil recovery system with a radiant tube heater (1991-06-04),
Company Overview
Indugas, Inc. is a Toledo, Ohio-based company specializing in advanced manufacturing solutions and innovative technologies. The organization focuses on developing high-performance materials and components, primarily serving industries such as automotive and aerospace. With a commitment to research and development, Indugas leverages cutting-edge techniques to enhance product performance and reliability. The company aims to meet the evolving needs of its clients through tailored solutions that emphasize quality and efficiency.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

18 Patents

#27 in Toledo, OH

#769 in Ohio

#17,980 in US

#34,263 in the World

Toledo, OH (US)
Toledo, OH, United States of America

Indugas, Inc.

Forward Citations = 896

7 inventors:

goldMedal Klaus H Hemsath (18 out of 45 patents)

silverMedal Rodney G Whitbeck (1 out of 11 patents)

bronzeMedal James E Lyon (1 out of 3 patents)

4.  Mark G Shapona (1 out of 3 patents)

5.  Claude Melvin Mack (1 out of 3 patents)

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

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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