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For the Inventor, By the Inventor

Glen Rock, PA, United States of America

Stewart Stamping Corp.


USPTO Granted Patents = 18


Trademarks = 1

Forward Citations = 357

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6 inventors (with patents filed for the assignee):

goldMedal Robert J Brennan (10 out of 12 patents)

silverMedal Terrence Meighen (10 out of 10 patents)

bronzeMedal Walter M Philippson (5 out of 5 patents)

4.  Maurice Wolfthal (5 out of 6 patents)

5.  Walter M Phillipson (5 out of 5 patents)

6.  Claus Volk (1 out of 1 patent)


18 patents:

1. 5059140 - Shielded plug and jack connector (1991-10-22),
2. 4941848 - Shielded plug jack connector (1990-07-17),
3. 4889503 - Shielded plug and jack connector (1989-12-26),
4. 4781623 - Shielded plug and jack connector (1988-11-01),
5. 4767355 - Jack and connector (1988-08-30),
6. 4703991 - Low profile jack (1987-11-03),
7. 4679878 - Insulation-piercing electrical contact and connector incorporating the (1987-07-14),
8. 4653837 - Jack and connector (1987-03-31),
9. 4641901 - Printed circuit board jack for modular plug connector terminated cord (1987-02-10),
10. 4578545 - Contact and terminal for telephone transmitter (1986-03-25),
11. 4537459 - Jack for EMI/RFI shield terminating modular plug connector (1985-08-27),
12. 4516825 - Modular connector for terminating EMI/RFI shielded cordage (1985-05-14),
13. 4506944 - Modular connector for terminating EMI/RFI shielded cordage and cord (1985-03-26),
14. 4330927 - Wire stripping and terminating apparatus (1982-05-25),
15. 4287748 - Rotary transfer press apparatus (1981-09-08),
Company Overview
Stewart Stamping Corp. is a specialized manufacturer based in Glen Rock, Pennsylvania, focusing on precision metal stamping and fabrication. The company serves a diverse range of industries, including automotive, aerospace, and electronics, providing high-quality components that meet stringent industry standards. With a commitment to innovation, Stewart Stamping leverages advanced manufacturing techniques and technologies to deliver reliable solutions tailored to the specific needs of its clients, ensuring efficiency and performance in every project.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 6 2026

18 Patents

#3 in Glen Rock, PA

#658 in Pennsylvania

#17,952 in US

#34,187 in the World

Glen Rock, PA (US)
Glen Rock, PA, United States of America

Stewart Stamping Corp.

Forward Citations = 357

6 inventors:

goldMedal Robert J Brennan (10 out of 12 patents)

silverMedal Terrence Meighen (10 out of 10 patents)

bronzeMedal Walter M Philippson (5 out of 5 patents)

4.  Maurice Wolfthal (5 out of 6 patents)

5.  Walter M Phillipson (5 out of 5 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Stewart Stamping Corp.. Retrieved from https://idiyas.com/company/stewart-stamping

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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