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For the Inventor, By the Inventor

TOLEDO, OH, United States of America

Sfc Ltd.


USPTO Granted Patents = 16


Trademarks = 1

Forward Citations = 8

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74 inventors (with patents filed for the assignee):

goldMedal Byung-Sun Yang (6 out of 7 patents)

silverMedal Sung-hoon Joo (5 out of 8 patents)

bronzeMedal Ji-hwan Kim (5 out of 9 patents)

4.  Bong-Ki Shin (4 out of 21 patents)

5.  So-young Shim (4 out of 5 patents)

6.  Jin-hwi Cho (4 out of 4 patents)

7.  Se-jin Yu (4 out of 5 patents)

8.  Yong-woon Yang (4 out of 4 patents)

9.  Hyeon-jun Jo (3 out of 6 patents)

10.  Sung-eun Choi (3 out of 6 patents)

11.  Seok-Bae Park (3 out of 3 patents)

12.  Takeshi Yamamoto (2 out of 155 patents)

13.  Shuichi Hayashi (2 out of 58 patents)

14.  Kouki Kase (2 out of 21 patents)

15.  Se-Jin Lee (2 out of 39 patents)


16 patents:

1. 12742115 - Organoelectroluminescent device using polycyclic aromatic compounds (2026-09-22),
2. 12735435 - Polycyclic aromatic derivative compound and organic light-emitting device using same (2026-09-15),
3. 12733394 - Organic light-emitting device (2026-09-08),
4. 12723192 - Organic electroluminescent element (2026-09-01),
5. 12692282 - Polycyclic compound and organic light emitting device using same (2026-07-28),
6. 12690387 - Anthracene compound and organic light-emitting device comprising same (2026-07-21),
7. 12674093 - Organoelectroluminescent device using polycyclic aromatic derivative compounds (2026-07-07),
8. 12644046 - Organic electroluminescent device (2026-06-02),
9. 12615960 - Organic light-emitting device (2026-04-28),
10. 12581854 - Organic light emitting diode for high efficiency (2026-03-17),
11. 12565509 - Polycyclic aromatic derivative compound and organic light-emitting device using same (2026-03-03),
12. 12552984 - Organic electroluminescent device (2026-02-17),
13. 12552817 - Boron compound and organic light-emitting diode comprising same (2026-02-17),
14. 12543493 - Organic light-emitting device (2026-02-03),
15. 12528830 - Polycyclic compound and organic electroluminescent device using the same (2026-01-20),
Company Overview
Sfc Ltd. is a Toledo, Ohio-based company specializing in advanced manufacturing solutions and innovative technologies. The organization focuses on developing high-performance products and systems that cater to various industries, including automotive, aerospace, and industrial applications. With a commitment to quality and precision, Sfc Ltd. leverages cutting-edge research to enhance operational efficiency and drive technological advancements in its field. The company is dedicated to delivering tailored solutions that meet the evolving needs of its clients.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 6 2026

16 Patents

#28 in TOLEDO, OH

#847 in Ohio

#19,907 in US

#37,788 in the World

TOLEDO, OH (US)
TOLEDO, OH, United States of America

Sfc Ltd.

Forward Citations = 8

74 inventors:

goldMedal Byung-Sun Yang (6 out of 7 patents)

silverMedal Sung-hoon Joo (5 out of 8 patents)

bronzeMedal Ji-hwan Kim (5 out of 9 patents)

4.  Bong-Ki Shin (4 out of 21 patents)

5.  So-young Shim (4 out of 5 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Sfc Ltd.. Retrieved from https://idiyas.com/company/sfc

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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