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For the Inventor, By the Inventor

Pittsburgh, PA, United States of America

Kerotest Manufacturing Corp.


USPTO Granted Patents = 24

Trademarks = 4

Forward Citations = 336

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17 inventors (with patents filed for the assignee):

goldMedal Richard W Conley (10 out of 11 patents)

silverMedal Richard P Tremblay (10 out of 10 patents)

bronzeMedal James R Owoc (5 out of 5 patents)

4.  Robert G Visalli (3 out of 3 patents)

5.  John H Thomas (3 out of 3 patents)

6.  James R Daniels (2 out of 5 patents)

7.  Edward L Schmitt (2 out of 2 patents)

8.  Charles W Bolam (2 out of 2 patents)

9.  Steven J Caroleo (2 out of 2 patents)

10.  Sam A Brunetto, Jr (1 out of 2 patents)

11.  John D Tricini (1 out of 3 patents)

12.  Duane D Guthrie (1 out of 1 patent)

13.  Charles Pollum (1 out of 1 patent)

14.  Bradley A Goodman (1 out of 1 patent)

15.  Joseph P McHale (1 out of 1 patent)


24 patents:

1. 5951902 - Method and apparatus for electrofusing thermoplastic (1999-09-14),
2. 5639394 - Electrofusion formed valve assembly (1997-06-17),
3. 5586749 - Composite polyethylene and transition valve (1996-12-24),
4. 5154396 - Reinforced plastic valve (1992-10-13),
5. 5100103 - Reinforced plastic valve (1992-03-31),
6. 4988077 - Reinforced plastic valve (1991-01-29),
7. 4546662 - Actuator mechanism for double bent bellows sealed rotary valve (1985-10-15),
8. 4540019 - Bellows sealed stem for rotary valve (1985-09-10),
9. 4526341 - Pneumatic shut-off valve (1985-07-02),
10. 4516754 - Bent bellows sealed rotary valve (1985-05-14),
11. 4513779 - Metering valve (1985-04-30),
12. 4511120 - Plastic service valve (1985-04-16),
13. 4488741 - Compression coupling for service valve (1984-12-18),
14. 4468002 - Actuator mechanism for double bent bellows sealed rotary valve (1984-08-28),
15. 4465260 - Plastic valve and improved actuator therefor (1984-08-14),
Company Overview
Kerotest Manufacturing Corp., based in Pittsburgh, PA, specializes in the design and production of high-quality valves and fittings for various industrial applications. The company is recognized for its expertise in fluid control solutions, serving sectors such as oil and gas, chemical processing, and water management. With a commitment to innovation, Kerotest focuses on developing reliable products that enhance operational efficiency and safety in demanding environments, leveraging advanced engineering and manufacturing techniques.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 13 2026

24 Patents

#105 in Pittsburgh, PA

#512 in Pennsylvania

#13,884 in US

#26,660 in the World

Pittsburgh, PA (US)
Pittsburgh, PA, United States of America

Kerotest Manufacturing Corp.

Forward Citations = 336

17 inventors:

goldMedal Richard W Conley (10 out of 11 patents)

silverMedal Richard P Tremblay (10 out of 10 patents)

bronzeMedal James R Owoc (5 out of 5 patents)

4.  Robert G Visalli (3 out of 3 patents)

5.  John H Thomas (3 out of 3 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Kerotest Manufacturing Corp.. Retrieved from https://idiyas.com/company/kerotest-manufacturing

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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