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For the Inventor, By the Inventor

Tokyo, Japan

Yoshio Tanaka

This inventor holds 26 USPTO granted patents, primarily in Cement Composition Technology. Top assignees: Sandoz Gmbh, Mbt Holding Ag, Kabushiki Kaisha Toshiba. Active years: 1981-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoshio Tanaka. Retrieved from https://idiyas.com/inventor/yoshio-tanaka

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Calculating rank
USPTO Granted Patents = 26

% Patents Active = 100.0

Average Co-Inventor Count = 1.7

ph-index = 13

Forward Citations = 614(Granted Patents)


Location History:

  • Shibuya, Shibuya-ku, Tokyo, JP (1981)
  • Shibuya-ku, Tokyo, JP (1981 - 1984)
  • Kanagawa, JP (1987)
  • Komae, JP (1990 - 1997)
  • Komae-shi, Tokyo, JP (1997)
  • Gifu-shi, Gifu-ken, JP (1990 - 1998)
  • Kishiwada-Shi, Osaka, JP (1999)
  • Tokyo, JP (1986 - 2011)

Company Filing History:

goldMedal4 out of 1,603 
 
Sandoz Gmbh
 patents
silverMedal3 out of 59 
 
Mbt Holding Ag
 patents
bronzeMedal2 out of 53,332 
 
Kabushiki Kaisha Toshiba
 patents
4. 2 out of 128 
 
Kureha Chemical Industry Company, Limited
 patents
5. 1 out of 1,335 
 
Nippon Shokubai Co., Ltd.
 patents
6. 1 out of 5 
 
Sunstar K.k.
 patents
7. 1 out of 47 
 
Takasago Perfumery Co., Ltd.
 patents
8. 1 out of 6,295 
 
Toshiba Tec Kabushiki Kaisha
 patents
9. 13 out of 834,708 
Other
 patents
where one patent can have more than one assignee

Years Active: 1981-2025

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Areas of Expertise:
Cement Dispersant
Fluidity Control
Sulfated Polysaccharide
Fish Feed Additive
Cryogenic Measurement
Sterilization
Dunaliella Algae
Encapsulated Foodstuff
Vasodilator
Indole Derivative
Portable Mask
26 patents (USPTO):Explore Patents
1. 12488349 - Monitoring apparatus, settlement apparatus, and programs (2025-12-02),
2. 7872040 - Receptor blocker and vasodilator comprising indole derivative as active ingredient (2011-01-18),
3. 6376581 - Cement dispersant, method for production thereof, and cement composition using the dispersant (2002-04-23),
4. 6187841 - Cement composition using the dispersant of (meth)acrylic esters, (metha)acrylic acids polymers (2001-02-13),
5. 5910599 - Preparation of antimony ethyleneglyoxide (1999-06-08),
6. 5780097 - Process for preparation of powdery extract of shiitake mushroom (1998-07-14),
7. 5780096 - Process for preparation of powdery chlorella extract (1998-07-14),
8. 5661206 - Fluidity control of cementitious compositions (1997-08-26),
9. 5660626 - Cement dispersing agent (1997-08-26),
10. 5573589 - Cement compositions containing a sulfated polysaccharide and method (1996-11-12),
11. 5358566 - Cement dispersing agent (1994-10-25),
12. 5229146 - Fish feed additive and process for producing the same (1993-07-20),
13. 5224777 - Cryogenic measurement equipment (1993-07-06),
14. 5217734 - Pet bird feed additive and process for producing the same (1993-06-08),
15. 5162402 - Slump retaining agent (1992-11-10),

Title: The Innovative Journey of Yoshio Tanaka

Introduction

Yoshio Tanaka, a prolific inventor based in Tokyo, Japan, has made significant contributions to various fields through his 25 patents. His work reflects a dedication to innovation, advancing both pharmaceutical applications and construction materials.

Latest Patents

Among his most recent inventions, Tanaka has developed a receptor blocker and vasodilator comprising an indole derivative as an active ingredient. This invention aims to provide a structurally simpler alternative to yohimbine, a well-known pentacyclic condensed heterocyclic compound that exhibits similar effects. Furthermore, he has introduced a novel cement dispersant and its production method, which enhances the water-reducing properties and prevents slump loss in cement compositions. This dispersant is based on a polycarboxylic acid type polymer with specific molecular weight characteristics, demonstrating his expertise in both pharmaceuticals and materials science.

Career Highlights

Yoshio Tanaka has collaborated with notable companies, including Sandoz GmbH, where his innovations have contributed to advancements in both the pharmaceutical and construction industries. His career is marked by a commitment to research and development, underscoring his status as a leading inventor in his respective fields.

Collaborations

Tanaka has worked alongside esteemed colleagues such as Akira Ohta and Hideyuki Tahara, fostering a collaborative environment that encourages innovation and the exchange of ideas. Their partnership has yielded significant advancements and patents that continue to impact their industries.

Conclusion

Yoshio Tanaka's inventive spirit and his contributions of 25 patents highlight his role as a key figure in innovation. His recent work in receptor blockers, vasodilators, and cement dispersants showcases his versatility and commitment to improving various sectors. As he continues to innovate, Tanaka remains an inspiration to aspiring inventors and professionals in the field.

Profile summary based on public USPTO records.
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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