This inventor holds 2 USPTO granted patents. Top assignee: Mitsui Petrochemical Industries, Ltd.. Active years: 1980-1996.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Ohtake, JP (1980)
- Tokyo, JP (1996)
Company Filing History:
Years Active: 1980-1996
Title: Innovations of Yukimasa Shigemura
Introduction
Yukimasa Shigemura is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of chemical engineering, particularly in the area of hydrocarbon processing and terephthalic acid production. With a total of 2 patents, his work has had a considerable impact on industrial processes.
Latest Patents
One of Shigemura's latest patents focuses on the removal of mercury from liquid hydrocarbon fractions. This innovative process involves high-temperature heat treatment to convert organic mercury compounds into inorganic forms or elemental mercury. The method efficiently removes higher molecular weight components and water from the fraction, followed by treatment with an adsorbent made of active carbon with calcium or a calcium compound. This approach allows for the effective removal of mercury at a low cost on an industrial scale, achieving extremely low mercury concentrations.
Another significant patent by Shigemura is an improved process for producing terephthalic acid. This process utilizes liquid-phase catalytic oxidation of p-xylene with oxygen at elevated temperatures and pressures. The method incorporates specific recycling conditions of the mother liquor, enhancing the efficiency of terephthalic acid production.
Career Highlights
Yukimasa Shigemura is associated with Mitsui Petrochemical Industries, Ltd., where he has contributed to various innovative projects. His expertise in chemical processes has positioned him as a valuable asset within the company.
Collaborations
Shigemura has collaborated with notable colleagues, including Shoji Tan and Shinji Abe. Their combined efforts have led to advancements in their respective fields and have fostered a collaborative environment for innovation.
Conclusion
Yukimasa Shigemura's contributions to the field of chemical engineering through his patents demonstrate his commitment to innovation and efficiency. His work continues to influence industrial practices, particularly in the processing of hydrocarbons and the production of terephthalic acid.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile