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For the Inventor, By the Inventor

Sakura, Japan

Tokiwa Phytochemical Co., Ltd.

Calculating rank
USPTO Granted Patents = 8

% Expired Patents = 37.5

Trademarks = 4

Forward Citations = 11

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17 inventors (with patents filed for the assignee):

goldMedal Jinwei Yang (3 out of 3 patents)

silverMedal Tsutomu Sasaki (2 out of 2 patents)

bronzeMedal Shujiro Seo (2 out of 2 patents)

4.  Jin Tatsuzaki (1 out of 1 patent)

5.  Tsutomu Ishikawa (1 out of 1 patent)

6.  Masao Takahashi (1 out of 10 patents)

7.  Nobuhito Kimura (1 out of 1 patent)

8.  Tsutomu Shimada (1 out of 19 patents)

9.  Yuka Koike (1 out of 1 patent)

10.  Naoaki Yoshida (1 out of 1 patent)

11.  Chihiro Mori (1 out of 1 patent)

12.  Hiromitsu Takayama (1 out of 1 patent)

13.  Mariko Kitajima (1 out of 1 patent)

14.  Tomoko Ishizuka (1 out of 1 patent)

15.  Tomoko Kuniyoshi (1 out of 1 patent)


8 patents:

1. 11452756 - Composition and method for improving quantity of tear fluid, composition, treating constipation and improving skin quality (2022-09-27),
2. 11154581 - Method for improvement of stiff neck and shoulders (2021-10-26),
3. 10889557 - Method of producing an alkoxyflavone derivative (2021-01-12),
4. 10377902 - Crystallized red pigment, method of producing a recrystallized red pigment and a method for improving the appearance of or preventing wrinkles (2019-08-13),
5. 9745279 - Sirtuin activator (2017-08-29),
6. 8101795 - Process for preparing high purity corosolic acid and high purity ursolic acid (2012-01-24),
7. 7071229 - Process for producing corosolic acid (2006-07-04),
8. 6737085 - Apocynum venetum extract for use as antidepressant (2004-05-18),
Company Overview
Tokiwa Phytochemical Co., Ltd. is a leading manufacturer of high-quality plant-based ingredients for the pharmaceutical, nutraceutical, and cosmetic industries. With a focus on research and innovation, Tokiwa Phytochemical is committed to providing natural and sustainable solutions to meet the ever-evolving needs of their customers. Their products are known for their purity, potency, and consistency, making them a trusted partner for companies around the world.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

8 Patents

#1 in Sakura

#5,050 in Japan

Sakura, JP
Sakura, Japan

Tokiwa Phytochemical Co., Ltd.

Forward Citations = 11

17 inventors:

goldMedal Jinwei Yang (3 out of 3 patents)

silverMedal Tsutomu Sasaki (2 out of 2 patents)

bronzeMedal Shujiro Seo (2 out of 2 patents)

4.  Jin Tatsuzaki (1 out of 1 patent)

5.  Tsutomu Ishikawa (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Tokiwa Phytochemical Co., Ltd.. Retrieved from https://idiyas.com/company/tokiwa-phytochemical-company

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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