For the Inventor, By the Inventor

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TOLEDO, OH, United States of America

Sfc Ltd.

USPTO Granted Patents = 15

EPO Patents = 12

Trademarks = 1

Forward Citations = 8

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77 inventors (with patents filed for the assignee):

Byung-Sun Yang (6 out of 7 patents)

Sung-hoon Joo (5 out of 8 patents)

Ji-hwan Kim (5 out of 9 patents)

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

5. Hyeon-jun Jo (3 out of 6 patents)

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

7. So-young Shim (3 out of 4 patents)

8. Jin-hwi Cho (3 out of 3 patents)

9. Se-jin Yu (3 out of 4 patents)

10. Yong-woon Yang (3 out of 3 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)

15 patents: Sort by Forward Citations

1. 12735435 - Polycyclic aromatic derivative compound and organic light-emitting device using same (2026-09-15),

2. 12733394 - Organic light-emitting device (2026-09-08),

3. 12723192 - Organic electroluminescent element (2026-09-01),

4. 12692282 - Polycyclic compound and organic light emitting device using same (2026-07-28),

5. 12690387 - Anthracene compound and organic light-emitting device comprising same (2026-07-21),

6. 12674093 - Organoelectroluminescent device using polycyclic aromatic derivative compounds (2026-07-07),

7. 12644046 - Organic electroluminescent device (2026-06-02),

8. 12615960 - Organic light-emitting device (2026-04-28),

9. 12581854 - Organic light emitting diode for high efficiency (2026-03-17),

10. 12565509 - Polycyclic aromatic derivative compound and organic light-emitting device using same (2026-03-03),

11. 12552984 - Organic electroluminescent device (2026-02-17),

12. 12552817 - Boron compound and organic light-emitting diode comprising same (2026-02-17),

13. 12543493 - Organic light-emitting device (2026-02-03),

14. 12528830 - Polycyclic compound and organic electroluminescent device using the same (2026-01-20),

15. 8887474 - Method of creating an interior wall panel (2014-11-18),

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USPTO Data Jan 1 1976 - Sep 15 2026

15 Patents

#29 in TOLEDO, OH

#882 in Ohio

#21,010 in US

#39,800 in the World

TOLEDO, OH, United States of America

Sfc Ltd.

Forward Citations = 8

77 inventors:

Byung-Sun Yang (6 out of 7 patents)

Sung-hoon Joo (5 out of 8 patents)

Ji-hwan Kim (5 out of 9 patents)

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

5. Hyeon-jun Jo (3 out of 6 patents)

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