For the Inventor, By the Inventor

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Pittsburgh, PA, United States of America

Kerotest Manufacturing Corp.

USPTO Granted Patents = 24

Trademarks = 5

Forward Citations = 331

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17 inventors (with patents filed for the assignee):

Richard W Conley (10 out of 11 patents)

Richard P Tremblay (10 out of 10 patents)

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: Sort by Forward Citations

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),

Kerotest Manufacturing Corp. is a leading manufacturer of valves, fittings, and instrumentation products for the oil and gas industry. With over 100 years of experience, Kerotest is known for its high-quality products and innovative solutions. Their products are designed to meet the strict requirements of the industry and are built to withstand even the harshest conditions. Kerotest is committed to providing customers with reliable and efficient solutions for their critical applications.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 16 2025

24 Patents

#86 in Pittsburgh, PA

#505 in Pennsylvania

#13,405 in US

#25,837 in the World

Pittsburgh, PA, United States of America

Kerotest Manufacturing Corp.

Forward Citations = 331

17 inventors:

Richard W Conley (10 out of 11 patents)

Richard P Tremblay (10 out of 10 patents)

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)

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