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For the Inventor, By the Inventor

Saga, Japan

Tsutomu Matsuishi

This inventor holds 4 USPTO granted patents. Top assignee: Ajinomoto Co., Ltd.. Active years: 1978-1987.

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

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

USPTO Granted Patents = 4

% Patents Active = 100.0

Average Co-Inventor Count = 4.4

ph-index = 3

Forward Citations = 27(Granted Patents)


Location History:

  • Kawasaki, JA (1978)
  • Saga, JP (1983 - 1987)
  • Yanagawa, JP (1987)

Company Filing History:

goldMedal4 out of 1,953 
 
Ajinomoto Co., Ltd.
 patents

Years Active: 1978-1987

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4 patents (USPTO):Explore Patents
1. 4714767 - Process for the separation of a basic amino acid from a fermentation (1987-12-22),
2. 4691054 - Method for separating a basic amino acid (1987-09-01),
3. 4399304 - L-phenylalanine 1/2 sulfate and its use (1983-08-16),
4. 4066502 - Method of producing carbon source for fermentation (1978-01-03),

Title: Tsutomu Matsuishi: Innovator in Amino Acid Separation Technologies

Introduction

Tsutomu Matsuishi is a notable inventor based in Saga, Japan. He has made significant contributions to the field of amino acid separation, holding a total of 4 patents. His work focuses on innovative processes that enhance the efficiency of separating basic amino acids from various liquids.

Latest Patents

Matsuishi's latest patents include a process for the separation of a basic amino acid from fermentation liquids. This process utilizes cation exchange resin towers in series, allowing for repetitive adsorption and elution steps. The method involves recycling washing water from the elution steps, optimizing the separation process. Another significant patent details a method for separating a basic amino acid from a liquor containing it. This method includes several steps, such as contacting the liquor with a strongly acidic cation exchange resin and passing an eluant through the resin to elute the basic amino acid.

Career Highlights

Tsutomu Matsuishi is currently employed at Ajinomoto Co., Ltd., a leading company in the food and biotechnology sectors. His work at Ajinomoto has allowed him to develop and refine his innovative separation techniques, contributing to advancements in amino acid production.

Collaborations

Matsuishi has collaborated with notable colleagues, including Yoshihiro Koga and Hiromasa Maruyama. These collaborations have fostered a productive environment for innovation and research within the company.

Conclusion

Tsutomu Matsuishi's contributions to amino acid separation technologies highlight his role as a key inventor in this field. His innovative methods and collaborative efforts continue to advance the industry, showcasing the importance of research and development in biotechnology.

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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