Tokyo, Japan

Kouji Sakashita

This inventor holds 8 USPTO granted patents. Top assignees: Chiyoda Corporation, Nippon Steel Chemical Co., Ltd.. Active years: 1994-1995.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kouji Sakashita. Retrieved from https://idiyas.com/inventor/kouji-sakashita

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

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 10.2

ph-index = 6

Forward Citations = 51(Granted Patents)


Location History:

  • Yokohama, JP (1994)
  • Tokyo, JP (1994 - 1995)

Company Filing History:


Years Active: 1994-1995

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8 patents (USPTO):Explore Patents

Title: **Kouji Sakashita: A Pioneer in Bisphenol A Production**

Introduction

Kouji Sakashita, an innovative inventor from Tokyo, Japan, has made significant contributions to the field of chemical production, particularly in the manufacturing processes of bisphenol A. With a remarkable record of eight patents, Sakashita continues to push the boundaries of chemical engineering through his unique approaches to synthesis and purification.

Latest Patents

Among Sakashita's latest inventions is a patented process for producing high-quality bisphenol A. This innovation allows for the creation of a bisphenol A with excellent purity and hue, achieved by washing a crystalline adduct of bisphenol A and phenol using specifically purified phenol. The process further involves decomposing the washed adduct to isolate bisphenol A.

Another noteworthy patent details a method for obtaining bisphenol A from a neutral crystalline adduct, fusing it in a strictly controlled atmosphere with an oxygen content limited to 0.005% by volume. This meticulous method enhances the purity of the end product and incorporates advanced steps such as two-stage steam stripping for phenol evaporation, underscoring Sakashita’s commitment to innovation in chemical processes.

Career Highlights

Throughout his career, Sakashita has collaborated with prominent entities in the chemical industry, including Chiyoda Corporation and Nippon Steel Chemical Co., Ltd. His work within these organizations has enabled him to refine his expertise and contribute to significant advancements in bisphenol A production.

Collaborations

Kouji Sakashita has worked alongside several notable colleagues, including Nobuo Moriya and Sachio Asaoka. Their collaborative efforts in research and innovation have propelled numerous advancements in their field, benefiting the broader industrial landscape.

Conclusion

Kouji Sakashita stands as a testament to the spirit of innovation and dedication within the chemical engineering sector. His pioneering work in the production of bisphenol A not only showcases his technical prowess but also highlights the importance of collaboration and continuous improvement in the field of inventions and patents. As he continues to develop his techniques, Sakashita remains a key figure for aspiring inventors and professionals seeking to make their mark in chemical production.

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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