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Shofu Inc.

USPTO Granted Patents = 104

% Expired Patents = 13.5

EPO Patents = 58

Trademarks = 29

Forward Citations = 315

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88 inventors (with patents filed for the assignee):

Yusei Kadobayashi (22 out of 46 patents)

Toshiyuki Nakatsuka (17 out of 26 patents)

Masako Shigezawa (16 out of 20 patents)

4. Daisuke Hara (14 out of 17 patents)

5. Toshio Kitamura (13 out of 14 patents)

6. Shuji Sakamoto (11 out of 12 patents)

7. Shunsuke Miyata (9 out of 11 patents)

8. Kenzo Yamamoto (9 out of 12 patents)

9. Shuhei Takahashi (9 out of 12 patents)

10. Katsuya Kimoto (8 out of 13 patents)

11. Masanori Goto (7 out of 8 patents)

12. Hidefumi Fujimura (7 out of 12 patents)

13. Ryouji Takei (7 out of 7 patents)

14. Mitsuji Teramae (6 out of 12 patents)

15. Noriyuki Negoro (6 out of 12 patents)

Core Competencies:

Photopolymerizable Composition

Dental Composite Material

Zirconia Blank

Dental Adhesive

Glass Ionomer Cement

Sintering Method

Dental CAD/CAM

Three-Dimensional Printing

Optical Transparency

Restorative Material

Dental Primer

Temporary Sealing Material

104 patents: Sort by Forward Citations

1. 12740924 - Dental photocurable composition excellent in storage stability (2026-09-22),

2. 12740847 - Zirconia mill blank for dental cutting and machining and preparing method thereof (2026-09-22),

3. 12552956 - Photopolymerizable type dental surface coating composition (2026-02-17),

4. RE50759 - Dental composite material having stable pasty property (2026-01-27),

5. 12484995 - Zirconia mill blank having layers with different contents of yttria and alumina (2025-12-02),

6. 12454490 - Sintering method for dental zirconia calcined body (2025-10-28),

7. 12295802 - Ceramic mill blank for dental cutting and machining (2025-05-13),

8. 12213849 - Dental zirconia blank having multilayer structure different in content of yttria (2025-02-04),

9. 12194112 - Indium-containing translucency improving liquid for dental zirconia calcined body (2025-01-14),

10. 12193897 - Zirconia mill blank for dental cutting and machining and preparing method thereof, and transparency improving liquid for zirconia mill blank for dental cutting and machining and using method thereof (2025-01-14),

11. 12115032 - Dental zirconia blank having high relative density (2024-10-15),

12. 12064493 - Dental photocurable composition having excellent storage stability (2024-08-20),

13. 12011490 - Dental photocurable composition excellent in operability and storage stability (2024-06-18),

14. 11986362 - Zirconia mill blank for dental cutting and machining and preparing method thereof (2024-05-21),

15. 11806202 - Mill blank for dental CAD/CAM with cutout portion for positioning (2023-11-07),

Company Overview

Shofu Inc., headquartered in Kyoto, Japan, specializes in the development and manufacturing of advanced dental materials. The company focuses on innovative solutions such as photopolymerizable compositions, dental composite materials, and zirconia blanks. Shofu is also recognized for its expertise in dental adhesives, glass ionomer cements, and sintering methods. With a commitment to enhancing dental practices, Shofu integrates cutting-edge technologies like dental CAD/CAM and three-dimensional printing into its product offerings, supporting dental professionals worldwide.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

104 Patents

#44 in Kyoto 615-0031

#1,095 in Japan

#7,525 in the World

Shofu Inc.

Forward Citations = 315

88 inventors:

Yusei Kadobayashi (22 out of 46 patents)

Toshiyuki Nakatsuka (17 out of 26 patents)

Masako Shigezawa (16 out of 20 patents)

4. Daisuke Hara (14 out of 17 patents)

5. Toshio Kitamura (13 out of 14 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Shofu Inc.. Retrieved from https://idiyas.com/company/shofu

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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