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For the Inventor, By the Inventor

Wilmington, DE, United States of America

Ucar Carbon Company Inc.

Calculating rank
USPTO Granted Patents = 24

% Expired Patents = 45.8


Forward Citations = 136

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33 inventors (with patents filed for the assignee):

goldMedal Irwin Charles Lewis (12 out of 63 patents)

silverMedal Richard Thomas Lewis (7 out of 12 patents)

bronzeMedal Richard Liichang Shao (7 out of 23 patents)

4.  Douglas J Miller (4 out of 28 patents)

5.  Dai Huang (4 out of 5 patents)

6.  James William Kortovich (3 out of 5 patents)

7.  Ching-Feng Chang (2 out of 16 patents)

8.  James Joseph Pavlisin (2 out of 6 patents)

9.  Brian Bowman (2 out of 9 patents)

10.  William Varela (2 out of 9 patents)

11.  Robert E Smith (2 out of 6 patents)

12.  Charles C Chiu (2 out of 7 patents)

13.  Werner H Ruoff (2 out of 2 patents)

14.  Allan Webster Intermill (2 out of 4 patents)

15.  Stephen L Strong (2 out of 2 patents)


24 patents:

1. 7264878 - Laminated carbon foam sandwich for naval decking (2007-09-04),
2. 7232606 - Sealant for high strength carbon foam (2007-06-19),
3. 7230969 - Electrode joint locking system (2007-06-12),
4. 7207424 - Manufacture of carbon/carbon composites by hot pressing (2007-04-24),
5. 7206330 - End-face seal for graphite electrodes (2007-04-17),
6. 7150837 - Isotropic pitch-based materials for thermal insulation (2006-12-19),
7. 7103083 - Optimized graphite electrode pin configuration (2006-09-05),
8. 7016394 - Male-female electrode joint (2006-03-21),
9. 6916435 - Process of making graphite articles (2005-07-12),
10. 6898232 - Induction furnace for high temperature operation (2005-05-24),
11. 6878331 - Manufacture of carbon composites by hot pressing (2005-04-12),
12. 6871560 - Electrode inspection system (2005-03-29),
13. 6808155 - Lay-up mold (2004-10-26),
14. 6804582 - Digital electrode observation (2004-10-12),
15. 6803108 - Carbon fiber binder pitch (2004-10-12),
Company Overview
Ucar Carbon Company Inc., based in Wilmington, DE, specializes in the development and manufacturing of advanced carbon materials. The company focuses on innovative solutions for various industries, including energy storage, automotive, and aerospace. Ucar Carbon is dedicated to enhancing the performance and sustainability of its products through cutting-edge research in carbon technology. Its commitment to quality and innovation positions it as a key player in the evolving landscape of carbon-based materials.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

24 Patents

#196 in Wilmington, DE

#238 in Delaware

#13,900 in US

#26,701 in the World

Wilmington, DE (US)
Wilmington, DE, United States of America

Ucar Carbon Company Inc.

Forward Citations = 136

33 inventors:

goldMedal Irwin Charles Lewis (12 out of 63 patents)

silverMedal Richard Thomas Lewis (7 out of 12 patents)

bronzeMedal Richard Liichang Shao (7 out of 23 patents)

4.  Douglas J Miller (4 out of 28 patents)

5.  Dai Huang (4 out of 5 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Ucar Carbon Company Inc.. Retrieved from https://idiyas.com/company/ucar-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]
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