For the Inventor, By the Inventor

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Bolingbrook, IL, United States of America

Epir Technologies, Inc.

USPTO Granted Patents = 14

% Expired Patents = 21.4

Trademarks = 4

Forward Citations = 56

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15 inventors (with patents filed for the assignee):

Sivalingam Sivananthan (11 out of 13 patents)

Christoph H Grein (6 out of 10 patents)

James K Garland (5 out of 13 patents)

4. Silviu Velicu (5 out of 12 patents)

5. Michael Carmody (4 out of 4 patents)

6. Robert W Bower (4 out of 11 patents)

7. Shubhrangshu Mallick (3 out of 3 patents)

8. Jerome Crocco (2 out of 2 patents)

9. Rasdip Singh (2 out of 2 patents)

10. Wayne H Lau (1 out of 1 patent)

11. Sir B Rafol (1 out of 2 patents)

12. Jean-Pierre Faurie (1 out of 1 patent)

13. Yuanping Chen (1 out of 1 patent)

14. Paul Boieriu (1 out of 1 patent)

15. Renganathan Ashokan (1 out of 1 patent)

14 patents: Sort by Forward Citations

1. 11257973 - Method for passing photovoltaic current between a subcell formed from a group II-VI semiconductor material and a subcell formed from a group IV semiconductor material (2022-02-22),

2. 10340405 - Tunnel heterojunctions in Group IV/Group II-IV multijunction solar cells (2019-07-02),

3. 9837563 - MBE growth technique for group II-VI inverted multijunction solar cells (2017-12-05),

4. 9455364 - Tunnel homojunctions in group IV / group II-VI multijunction solar cells (2016-09-27),

5. 8912428 - High efficiency multijunction II-VI photovoltaic solar cells (2014-12-16),

6. 8360818 - Automated chemical polishing system adapted for soft semiconductor materials (2013-01-29),

7. 8072801 - Method for creating nonequilibrium photodetectors with single carrier species barriers (2011-12-06),

8. 7824245 - Automated chemical polishing system adapted for soft semiconductor materials (2010-11-02),

9. 7821807 - Nonequilibrium photodetectors with single carrier species barriers (2010-10-26),

10. 7820971 - Photodetector with dark current reduction (2010-10-26),

11. 7586115 - Light emission from semiconductor integrated circuits (2009-09-08),

12. 7045378 - Forming a photodiode to include a superlattice exclusion layer (2006-05-16),

13. 6906358 - Nonequilibrium photodetector with superlattice exclusion layer (2005-06-14),

14. 6657194 - Multispectral monolithic infrared focal plane array detectors (2003-12-02),

Company Overview

Epir Technologies, Inc., based in Bolingbrook, Illinois, specializes in advanced technology solutions with a focus on innovative materials and engineering processes. The company is dedicated to developing cutting-edge applications in various sectors, including aerospace, automotive, and electronics. By leveraging its expertise in research and development, Epir aims to enhance product performance and sustainability, positioning itself as a key player in the technology landscape. Its commitment to innovation drives continuous improvement and adaptation to market needs.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

14 Patents

#4 in Bolingbrook, IL

#1,123 in Illinois

#22,319 in US

#42,249 in the World

Bolingbrook, IL, United States of America

Epir Technologies, Inc.

Forward Citations = 56

15 inventors:

Sivalingam Sivananthan (11 out of 13 patents)

Christoph H Grein (6 out of 10 patents)

James K Garland (5 out of 13 patents)

4. Silviu Velicu (5 out of 12 patents)

5. Michael Carmody (4 out of 4 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Epir Technologies, Inc.. Retrieved from https://idiyas.com/company/epir-technologies

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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