Tokyo, Japan

Hamao Umezawa


Average Co-Inventor Count = 4.4

ph-index = 16

Forward Citations = 1,185(Granted Patents)

Forward Citations (Not Self Cited) = 998(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Tokyo, JA (1976 - 1978)
  • late of Tokyo, JP (1989)
  • Tokyo, JP (1978 - 1994)

Company Filing History:

goldMedal142 out of 212 
 
Zaidan Hojin Biseibutsu Kagaku Kenkyu Kai
 patents
silverMedal13 out of 775 
 
Nippon Kayaku Kabushiki Kaisha
 patents
bronzeMedal13 out of 37 
 
Sanraku-ocean Co., Ltd.
 patents
48 out of 329 
 
Yamanouchi Pharmaceutical Company Ltd.
 patents
55 out of 382 
 
Meiji Seika Kaisha, Ltd.
 patents
64 out of 44 
 
Microbial Chemistry Research Foundation
 patents
74 out of 21 
 
Sanraku Incorporated
 patents
83 out of 637 
 
Bristol-myers Company
 patents
93 out of 237 
 
Banyu Pharmaceutical Co. Ltd
 patents
102 out of 109 
 
Kanegafuchi Chemical Industry Co., Ltd.
 patents
112 out of 590 
 
Kowa Company Limited
 patents
122 out of 215 
 
Kirin Beer Kabushiki Kaisha
 patents
131 out of 190 
 
Takara Shuzo Co., Inc.
 patents
141 out of 1 
 
Takara Shuzo Col., Ltd.
 patent
151 out of 1 
 
Zaidan Hojin Biselbutsu Kagaku Kenkyu Kai (microbial Chemistry Research
 patent
161 out of 1 
 
Zaidin Hojin Biseibutsu Kagaku Kenky Kai
 patent
171 out of 2 
 
Meiji Seiki Kaisha, Ltd.
 patents
181 out of 1 
 
Zaidan Hojin Biseibutsu Kagaku
 patent
191 out of 1 
 
Zaidan Hojin Biseibutsu Kagaku Kenkyu Kai (microbial Chemistry Research
 patent
201 out of 1 
 
Microbiochemical Research Foundation
 patent
where one patent can have more than one assignee

Years Active: 1976-1994

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Areas of Expertise:
N-Methylphenylserine
Mycaminosyl Tylonolide
Anthracycline Antibiotics
Spergualin
Immunopotentiation
Aminopropylaminobleomycin
Crystalline Bestatin
Physiologically Active Substances
Protease Adsorbent
Optically Active Compounds
Tylosin Derivatives
Glyoxylylspermidine
203 patents (USPTO):Explore Patents

Title: Hamao Umezawa: Pioneering Innovator and Inventor in Tokyo, Japan

Introduction:

Hamao Umezawa, a prominent inventor hailing from Tokyo, Japan, has made significant contributions to the world of pharmaceuticals through his groundbreaking patents. With an impressive portfolio of 203 patents, Umezawa’s innovative solutions have revolutionized the field of medicinal chemistry. In this article, we will delve into some of his latest patents, highlight his career achievements, explore his collaborations, and recognize the impact he has made within the industry.

Latest Patents:

Umezawa’s recent patents showcase his ingenuity and ability to develop novel compounds with therapeutic applications. One such patent is titled "N-methylphenylserine alkyl ester derivatives and uses thereof." This patent introduces new compounds that act as effective alpha and beta adrenergic agents for stimulating the central nervous system's functions. These compounds hold great potential for treating disorders related to reduced activity in alpha and beta neuronal functions. Notably, N-methyl-L-threo-3-(3,4-dihydroxyphenyl)serine (C1-C6) alkyl esters are among the preferred compounds in this invention.

Another notable patent by Umezawa is on "Mycaminosyl tylonolide derivatives." These compounds, represented by a well-defined chemical structure, hold promise for various therapeutic applications. Their potential to be used as medicinal agents can be attributed to their unique properties and the presence of specific functional groups within their structure. These derivatives have opened up new possibilities in the field of pharmaceutical research.

Career Highlights:

Throughout his illustrious career, Umezawa has showcased his talent and passion for medicinal chemistry. He has contributed significantly to advancing pharmaceutical research and development in Japan. Notably, Umezawa has worked with esteemed organizations such as Zaidan Hojin Biseibutsu Kagaku Kenkyu Kai and Nippon Kayaku Kabushiki Kaisha.

Collaborations:

Umezawa's collaborations have been instrumental in his success as an inventor and innovator. Two notable coworkers who have shared his journey are Tomio Takeuchi and Sumio Umezawa. These collaborative efforts have enhanced the quality and impact of their research, further benefiting the field of medicinal chemistry.

Conclusion:

Hamao Umezawa's immense contributions to the field of medicinal chemistry are evident through his numerous patents and groundbreaking inventions. His novel compounds and derivatives have paved the way for innovative therapeutic treatments, offering hope for those suffering from disorders related to alpha and beta neuronal activities. Umezawa's career highlights and collaborations underscore his dedication to advancing the field and leaving a lasting impact on the pharmaceutical industry. Tokyo, Japan owes much of its progress in medicinal chemistry to this visionary inventor, Hamao Umezawa.

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