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Ishihara Sangyo Kaisha, Ltd.

USPTO Granted Patents = 394

% Expired Patents = 17.3

CIPO Patents = 18

EPO Patents = 109

Trademarks = 35

Forward Citations = 2,295

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413 inventors (with patents filed for the assignee):

Takahiro Haga (62 out of 62 patents)

Kanichi Fujikawa (40 out of 40 patents)

Toru Koyanagi (35 out of 35 patents)

4. Ryuzo Nishiyama (34 out of 34 patents)

5. Isao Yokomichi (32 out of 32 patents)

6. Nobuyuki Sakashita (31 out of 31 patents)

7. Ryu Yamada (25 out of 25 patents)

8. Masayuki Morita (22 out of 22 patents)

9. Hideo Sugi (22 out of 22 patents)

10. Nobutoshi Yamada (21 out of 22 patents)

11. Takashi Terada (18 out of 19 patents)

12. Tadaaki Toki (18 out of 18 patents)

13. Itaru Shigehara (18 out of 18 patents)

14. Ryohei Takahashi (18 out of 18 patents)

15. Yasuhiro Tsujii (17 out of 17 patents)

Core Competencies:

Fungicide Composition

Herbicidal Composition

Titanium Dioxide

Pesticidal Composition

Organic Semiconductor

Plant Disease Control

Antimicrobial Agent

Lithium Titanate

394 patents: Sort by Forward Citations

1. 12521372 - Antimicrobial agent for non-human animal (2026-01-13),

2. 12473259 - Anhydrous crystal of monosodium n-(2-ethylsulfonylamino-5-trifluoromethyl-3-pyridyl)cyclohexane carboxamide (2025-11-18),

3. 12439912 - Agricultural chemical preparation containing difenoconazole, and method for stabilizing said agricultural chemical preparation (2025-10-14),

4. 12396987 - Pharmaceutical composition with excellent storage stability (2025-08-26),

5. 12331062 - Compound, production method therefor, and organic semiconductor material obtained using said compound (2025-06-17),

6. 12239133 - Herbicidal composition (2025-03-04),

7. 12221355 - Titanium oxide particles and manufacturing method therefor (2025-02-11),

8. 12096773 - Herbicidal composition (2024-09-24),

9. PP35798 - plant named '311NR' (2024-05-07),

10. 11950592 - Method for enhancing plant disease controlling effects of aryl phenyl ketone fungicide, and method for controlling plant diseases (2024-04-09),

11. 11912684 - N-(4-pyridyl)nicotinamide compound or salt thereof (2024-02-27),

12. 11702560 - Titanium dioxide aqueous dispersion and method for producing same (2023-07-18),

13. 11653650 - Fungicide composition and method for controlling disease of crop (2023-05-23),

14. 11623992 - Flaky titanate and method for production thereof, and use thereof (2023-04-11),

15. 11512205 - Composite pigment and production method thereof, paint composition containing composite pigment, and coating film (2022-11-29),

Company Overview

Ishihara Sangyo Kaisha, Ltd., based in Osaka, Japan, specializes in the development and manufacturing of agricultural chemicals. The company focuses on innovative solutions in fungicide and herbicidal compositions, as well as advanced materials like titanium dioxide and lithium titanate. With a commitment to plant disease control and antimicrobial agents, Ishihara Sangyo plays a significant role in enhancing agricultural productivity and sustainability through its diverse technological expertise.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

394 Patents

#51 in Osaka

#440 in Japan

#2,357 in the World

Ishihara Sangyo Kaisha, Ltd.

Forward Citations = 2,295

413 inventors:

Takahiro Haga (62 out of 62 patents)

Kanichi Fujikawa (40 out of 40 patents)

Toru Koyanagi (35 out of 35 patents)

4. Ryuzo Nishiyama (34 out of 34 patents)

5. Isao Yokomichi (32 out of 32 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Ishihara Sangyo Kaisha, Ltd.. Retrieved from https://idiyas.com/company/ishihara-sangyo-kaisha

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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