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For the Inventor, By the Inventor

Tokyo, Japan

Nof Corporation


USPTO Granted Patents = 344

% Expired Patents = 13.4



Trademarks = 28

Forward Citations = 1,536

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570 inventors (with patents filed for the assignee):

goldMedal Yuji Yamamoto (26 out of 95 patents)

silverMedal Hiroki Yoshioka (24 out of 43 patents)

bronzeMedal Tohru Yasukohchi (19 out of 30 patents)

4.  Chika Itoh (18 out of 18 patents)

5.  Nobuyuki Sakamoto (16 out of 16 patents)

6.  Takuma Tsubusaki (15 out of 15 patents)

7.  Ken-ichiro Nakamoto (14 out of 14 patents)

8.  Kazuhiro Kubo (12 out of 12 patents)

9.  Yosuke Matsuoka (12 out of 12 patents)

10.  Norio Iwakiri (12 out of 12 patents)

11.  Kota Tange (11 out of 11 patents)

12.  Hideki Kawamoto (11 out of 11 patents)

13.  Eui-chul Kang (11 out of 11 patents)

14.  Shunsuke Sakurai (10 out of 12 patents)

15.  Kenji Sakanoue (10 out of 10 patents)


Core Competencies:
Polyethylene Glycol
Biodegradable Derivative
Branched Polymer
Contact Lens
Hydrophilic Polymer
Antibody-Drug Conjugate
Lubricating Oil
Lipid Nanoparticle
Surfactant Composition
Ocular Drug Retention
Thermoplastic Resin
Solid Soap

344 patents:

1. 12747314 - Surface treatment agent for ophthalmic device (2026-09-29),
2. 12746202 - Cationic lipid having disulfide bond, lipid membrane structure including same, nucleic acid introduction agent and pharmaceutical composition containing any one of same, method for introducing nucleic acid into cell or target cell, and method for producing cellular pharmaceutical (2026-09-29),
3. 12723223 - Cleaning agent for electroconductive paste and method for cleaning electroconductive paste (2026-09-01),
4. 12715944 - Modifier for ophthalmological device (2026-08-25),
5. 12674025 - Branched type hetero monodispersed polyethylene glycol, production method thereof, and conjugate thereof (2026-07-07),
6. 12668662 - Method for producing maleimide polyethylene glycol lipid (2026-06-30),
7. 12653898 - Polyoxyethylene derivatives and conjugates thereof (2026-06-16),
8. 12636310 - Therapeutic agent for short tear breakup time-type dry eye and eye drops containing same (2026-05-26),
9. 12622979 - Lipid nanoparticle used for delivering nucleic acid to brain tissue (2026-05-12),
10. 12622878 - Cationic lipid having cystine skeleton (2026-05-12),
11. 12600677 - Ceramic green sheet lamination aid and ceramic green sheet composition (2026-04-14),
12. 12595336 - Method for producing maleimide polyethylene glycol derivative (2026-04-07),
13. 12583967 - Branched type hetero monodispersed polyethylene glycol, production method thereof, and conjugate thereof (2026-03-24),
14. 12577221 - Cyclocarbonate group-containing (meth)acrylate monomer and polymer (2026-03-17),
15. 12559681 - Solubilizing agent and solubilizing solution (2026-02-24),
NOF CORPORATION is a global multi-business chemicals manufacturer headquartered in Japan. Operating in various sectors, including Chemicals, Pharma & Nutraceuticals, and Environmental Solutions, NOF delivers high-quality products and services worldwide. With a commitment to innovation and sustainability, NOF strives to contribute to the advancement of society and the well-being of people.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Sep 29 2026

Nof Corporation
344 Patents

#244 in Tokyo

#487 in Japan

#2,640 in the World

Tokyo, JP
Tokyo, Japan

Nof Corporation

Forward Citations = 1,536

570 inventors:

goldMedal Yuji Yamamoto (26 out of 95 patents)

silverMedal Hiroki Yoshioka (24 out of 43 patents)

bronzeMedal Tohru Yasukohchi (19 out of 30 patents)

4.  Chika Itoh (18 out of 18 patents)

5.  Nobuyuki Sakamoto (16 out of 16 patents)

Please report any incorrect information to [email protected]
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