Ibaraki, Japan

Susumu Ohtsuka

This inventor holds 8 USPTO granted patents. Top assignees: Hitachi, Ltd., Sumitomo Chemical Company, Limited, Ono Pharmaceutical Co., Ltd.. Active years: 1991-2006.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Susumu Ohtsuka. Retrieved from https://idiyas.com/inventor/susumu-ohtsuka

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


% Patents Active = 87.5

Average Co-Inventor Count = 3.0

ph-index = 3

Forward Citations = 18(Granted Patents)


Location History:

  • Takarazuka, JP (1991 - 1992)
  • Katsuta, JP (1993)
  • Ibaraki, JP (1992 - 2006)

Company Filing History:


Years Active: 1991-2006

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8 patents (USPTO):Explore Patents

Title: Susumu Ohtsuka: Innovator in Chemical Processes

Introduction

Susumu Ohtsuka is a notable inventor based in Ibaraki, Japan. He has made significant contributions to the field of chemistry, particularly in the development of processes for producing various chemical compounds. With a total of 8 patents to his name, Ohtsuka's work has had a considerable impact on industrial applications.

Latest Patents

Ohtsuka's latest patents include a process for producing chromone compounds, which involves reacting specific compounds in the presence of a base. This innovative method allows for the production of dicarboxylic acid compounds and nitrochromone compounds. Additionally, he has developed a process for producing 1-chloro-4-arylbutane, characterized by the reaction of 1-bromo-3-chloropropane with other compounds in a solvent. These patents showcase his expertise in creating efficient chemical processes.

Career Highlights

Throughout his career, Susumu Ohtsuka has worked with prominent companies such as Hitachi, Ltd. and Sumitomo Chemical Company, Limited. His experience in these organizations has contributed to his development as a leading inventor in the chemical industry. Ohtsuka's work has not only advanced scientific knowledge but has also provided practical solutions for industrial challenges.

Collaborations

Ohtsuka has collaborated with notable colleagues, including Mitsunori Hiratsuka and Masao Shiroshita. These partnerships have fostered innovation and have been instrumental in the successful development of his patented processes.

Conclusion

In summary, Susumu Ohtsuka is a distinguished inventor whose contributions to chemical processes have been significant. His patents reflect a commitment to innovation and practical applications in the industry. Ohtsuka's work continues to influence the field of chemistry and inspire future advancements.

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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