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For the Inventor, By the Inventor

Chiba, Japan

Kimio Hamamura

USPTO Granted Patents = 18

Average Co-Inventor Count = 4.5

ph-index = 3

Forward Citations = 36(Granted Patents)


Location History:

  • Kashiwa, JA (1977)
  • Kashiwa, JP (1978 - 1992)
  • Chiba, JP (1979 - 1997)
  • Chiba Prefecture, JP (1996 - 1999)

Company Filing History:

goldMedal10 out of 677 
 
Eisai Company, Limited
 patents
silverMedal8 out of 21 
 
Eisai Chemical Co., Ltd.
 patents

Years Active: 1977-1999

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18 patents (USPTO):Explore Patents
1. 5998611 - Process for producing cephem compounds in an aqueous medium (1999-12-07),
2. 5874611 - Butenyl hydroquinone derivatives (1999-02-23),
3. 5686635 - Tetrahydro-alkenyl-methanonaphthalene-5,8-dione derivatives (1997-11-11),
4. 5677471 - Process for the preparation of quinone derivative (1997-10-14),
5. 5608092 - 1,4,4.sub.a 5,8,9.sub.a (1997-03-04),
6. 5565586 - Oxidative process for the preparation of allyl quinone derivatives (1996-10-15),
7. 5476955 - Process for the preparation of a quinone derivative (1995-12-19),
8. 5412124 - Preparation process of naphthoquinone derivative and intermediate for (1995-05-02),
9. 5245060 - Terpene derivatives and process for preparing the same (1993-09-14),
10. 5104996 - Process for preparing 2,3,5-trimethylbenzoquinone (1992-04-14),
11. 5102895 - Novel vitamin E derivatives and process for the production thereof (1992-04-07),
12. 4433159 - Synthesis of optically active d-alpha tocopherol (1984-02-21),
13. 4163864 - Process for preparing 2-methyl-3-prenyl-4,5,6-trimethoxyphenol (1979-08-07),
14. 4130659 - Polyprenyl carboxylic acid compound and hypotensive agent containing it (1978-12-19),
15. 4130648 - 5-Fluorouracil derivatives and antitumor preparations containing the same (1978-12-19),

Title: Kimio Hamamura: Innovator in Pharmaceutical Chemistry

Introduction

Kimio Hamamura is a distinguished inventor based in Chiba, Japan. He has made significant contributions to the field of pharmaceutical chemistry, particularly in the development of novel antibiotic compounds. With a total of 18 patents to his name, Hamamura's work has had a profound impact on medicine.

Latest Patents

One of his latest patents is a process for producing cephem compounds in an aqueous medium. This innovative method offers an industrially excellent approach to synthesizing cephem compounds, which are essential in the development of antibiotics. The process involves reacting a 3-cephem-4-carboxylate with an acid chloride in water, resulting in compounds that can be utilized as effective medicines. Another notable patent is related to butenyl hydroquinone derivatives. This hydroquinone derivative serves as an intermediate for chroman derivatives, which are useful as blood sugar-lowering agents.

Career Highlights

Throughout his career, Kimio Hamamura has worked with prominent companies in the pharmaceutical industry, including Eisai Company, Limited and Eisai Chemical Co., Ltd. His expertise and innovative spirit have allowed him to contribute significantly to the advancement of pharmaceutical technologies.

Collaborations

Hamamura has collaborated with notable colleagues such as Shizumasa Kijima and Chiaki Seki. These partnerships have fostered a collaborative environment that has led to groundbreaking advancements in their respective fields.

Conclusion

Kimio Hamamura's contributions to pharmaceutical chemistry exemplify the spirit of innovation and dedication to improving healthcare. His patents and collaborations continue to influence the development of vital medical compounds.

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