This inventor holds 2 USPTO granted patents. Top assignee: Mitsui Petrochemical Industries, Ltd.. Active years: 1977-1982.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Ohtake, JA (1977)
- Waki, JP (1982)
Company Filing History:
Years Active: 1977-1982
Title: Kazuhiro Watari: Innovator in Phenol Production
Introduction
Kazuhiro Watari is a notable inventor based in Ohtake, Japan. He has made significant contributions to the field of chemical engineering, particularly in the production and recovery of phenolic compounds. With a total of 2 patents to his name, Watari's work has advanced the efficiency and safety of chemical processes.
Latest Patents
Watari's latest patents include a process and apparatus for the preparation of phenols. This innovative process involves reacting an .alpha.-hydroxyalkyl-substituted aromatic compound and/or an .alpha.,.beta.-unsaturated alkyl-substituted aromatic compound with hydrogen peroxide in the presence of an acid catalyst. The method emphasizes the use of diluted hydrogen peroxide, which is supplied in a divided manner to enhance the reaction's efficiency and yield high-quality phenols safely.
Another significant patent is a method for separating and recovering hydroquinone. This method involves distilling a by-product-containing acid-cleavage product obtained from the oxidation of para-diisopropyl benzene. The process is characterized by the removal of low-boiling fractions without the addition of water, ensuring that hydroquinone can be crystallized and separated effectively.
Career Highlights
Kazuhiro Watari is currently employed at Mitsui Petrochemical Industries, Ltd., where he continues to innovate in the field of petrochemicals. His work has not only contributed to the company's success but has also had a broader impact on the industry.
Collaborations
Watari has collaborated with esteemed colleagues such as Seiichi Tanaka and Hideki Hayashi. Their combined expertise has fostered advancements in chemical processes and product development.
Conclusion
Kazuhiro Watari's contributions to the field of chemical engineering, particularly in the production and recovery of phenolic compounds, highlight his innovative spirit and dedication to improving industrial processes. His patents reflect a commitment to enhancing efficiency and safety in chemical manufacturing.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile