Forward Citations = 60

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11 inventors (with patents filed for the assignee):

Erle I Shobert, Ii (2 out of 2 patents)

Edward J Zelt (2 out of 4 patents)

John W Borkowski (2 out of 2 patents)

4. Robert E Schreiber (1 out of 1 patent)

5. Virgil P Quirk (1 out of 1 patent)

6. Robert L Gerg (1 out of 1 patent)

7. Raymond W Klaiber, Jr (1 out of 1 patent)

8. William L Dippold (1 out of 2 patents)

9. La Vern Lenze, Jr (1 out of 1 patent)

10. William A Nystrom (1 out of 2 patents)

11. Alan F Campbell (1 out of 1 patent)

7 patents: Sort by Forward Citations

1. 4235859 - Graphite molding powder and method of preparation (1980-11-25),

2. 4163167 - Electric motor brush holder (1979-07-31),

3. 4109667 - Hair setting roller (1978-08-29),

4. 4102960 - Process for making high strength flexible graphite foil (1978-07-25),

5. 4059776 - Electric motor brush mounting (1977-11-22),

6. 3949711 - Rotary engine with graphite housing (1976-04-13),

7. 3937992 - Pulse keyboard switch (1976-02-10),

Company Overview

Stackpole Carbon Company is a leading manufacturer of high-quality carbon and metallic powder products for a variety of industries including automotive, electronics, and telecommunications. With over 100 years of experience, Stackpole is known for their innovative solutions, reliable products, and exceptional customer service.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

7 Patents

#3 in St. Marys, PA

#1,438 in Pennsylvania

#39,879 in US

St. Marys, PA, United States of America

Stackpole Carbon Company

Forward Citations = 60

11 inventors:

Erle I Shobert, Ii (2 out of 2 patents)

Edward J Zelt (2 out of 4 patents)

John W Borkowski (2 out of 2 patents)

4. Robert E Schreiber (1 out of 1 patent)

5. Virgil P Quirk (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Stackpole Carbon Company. Retrieved from https://idiyas.com/company/stackpole-carbon-company

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]