Tsutomu Miyagawa

This inventor holds 11 USPTO granted patents. Top assignees: Wako Pure Chemical Industries, Inc., Takeda Chemical Industries, Inc., Waco Pure Chemical Ind. Inc.. Active years: 1977-1992.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tsutomu Miyagawa. Retrieved from https://idiyas.com/inventor/tsutomu-miyagawa

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

USPTO Granted Patents = 11

% Patents Active = 100.0

Average Co-Inventor Count = 3.3

ph-index = 6

Forward Citations = 345(Granted Patents)

Location History:

Kawagoe, JA (1977)
Saitama, JP (1987 - 1991)
Kawagoe, JP (1981 - 1992)

Company Filing History:

8 out of 299

Wako Pure Chemical Industries, Inc.

patents

4 out of 1,858

Takeda Chemical Industries, Inc.

patents

1 out of 1

Waco Pure Chemical Ind. Inc.

patent

4. 1 out of 1

Wada Pure Chemical Ind., Ltd.

patent

where one patent can have more than one assignee

Years Active: 1977-1992

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11 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 5095149 - Process for producing 4-halogeno-2-alkoxyimino-3-oxo fatty acid (1992-03-10),

2. 5001228 - Bis-alkylamide azo polymerization initiators (1991-03-19),

3. 5000880 - Novel process for producing phosphatidylcholine derivatives (1991-03-19),

4. 4990600 - Azoamidine compounds having a c-alkylated imidazoline ring and salts (1991-02-05),

5. 4849228 - Polymer, production and use thereof (1989-07-18),

6. 4826959 - 2,2'-Azobis(2,4-dimethylvaleronitrile) isomer mixture predominant in low (1989-05-02),

7. 4728721 - Polymer, production and use thereof (1988-03-01),

8. 4683288 - Polymer and its production (1987-07-28),

9. 4677191 - Copolymer and method for producing the same (1987-06-30),

10. 4260713 - Process for producing water-soluble polymers (1981-04-07),

11. 4039527 - Unsymmetrical azonitriles (1977-08-02),

Title: Tsutomu Miyagawa: A Pioneer in Fatty Acid Chemistry

Introduction

Tsutomu Miyagawa is an accomplished inventor based in Kawagoe, Japan, known for his contributions to fatty acid chemistry. With a total of 11 patents to his name, Miyagawa has significantly impacted the field through innovative processes and chemical techniques.

Latest Patents

Among his recent inventions, two patents stand out. The first is a novel process for producing 4-halogeno-2-alkoxyimino-3-oxo fatty acid. This innovative method allows for the production of this compound in a one-pot, one-step reaction by employing a halogenating agent with a 2-alkoxyimino-3-oxo fatty acid ester in either an ether solvent or a mixed solvent, including inert organic solvents such as carbon tetrachloride, benzene, and toluene. The second noteworthy patent is focused on producing phosphatidylcholine derivatives. In this process, glycero-phosphatidylcholine is acylated with a higher fatty acid anhydride, demonstrating an efficient method that operates in the absence of a catalyst and employs a special organic solvent.

Career Highlights

Throughout his career, Tsutomu Miyagawa has worked with esteemed companies in the chemical industry, including Wako Pure Chemical Industries, Inc. and Takeda Chemical Industries, Inc. His dedication to research and innovation has led to significant improvements within these organizations and the broader scientific community.

Collaborations

Miyagawa has also collaborated with notable peers, including Motoaki Tanaka and Yasuaki Ogawa. Their collective expertise has fostered an environment of innovative thinking and exceptional advancements in fatty acid-related chemistry.

Conclusion

Tsutomu Miyagawa's contributions to fatty acid chemistry through his inventive processes set a benchmark for future research and development in the field. With his record of 11 patents, he continues to influence the industry, paving the way for advancements that can benefit both science and industry.

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]