This inventor holds 2 USPTO granted patents. Top assignee: Toyo Gosei Kogyo Co., Ltd.. Active years: 2000-2001.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Chiba, JP (2000)
- Yotsukaido, JP (2001)
Company Filing History:
Years Active: 2000-2001
Title: Seiju Tobishima: Innovator in Chemical Production
Introduction
Seiju Tobishima is a notable inventor based in Yotsukaido, Japan. He has made significant contributions to the field of chemical production, particularly through his innovative methods for synthesizing complex compounds. With a total of two patents to his name, Tobishima's work has garnered attention in the scientific community.
Latest Patents
Tobishima's latest patents include a method for producing 1,2-naphthoquinone-2-diazide-4-sulfonyl chloride. This effective method allows for high yield production while preventing the formation of impurities. The process involves reacting 1,2-naphthoquinone-2-diazide with chlorosulfuric acid, resulting in a mixture of sulfonated and chlorosulfonated compounds. Further reactions with substances like thionyl chloride or phosphorus pentachloride yield the desired product.
Another significant patent is his method for producing 1,2-naphthoquinone-2-diazide derivatives. This method effectively derives a 1,2-naphthoquinone-2-diazide or a sulfo-substituted compound from a 2-diazo-1-naphthalenesulfonic acid. The process utilizes an aqueous alkaline solution containing iodine or an oxidizing agent, showcasing Tobishima's innovative approach to chemical synthesis.
Career Highlights
Seiju Tobishima is currently employed at Toyo Gosei Kogyo Co., Ltd., where he continues to develop and refine his methods. His work has not only advanced the field of chemical production but has also contributed to the efficiency and effectiveness of various industrial processes.
Collaborations
Tobishima has collaborated with notable colleagues such as Hirotada Iida and Nobuhiro Yoneyama. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of ideas.
Conclusion
Seiju Tobishima's contributions to chemical production through his innovative patents highlight his expertise and dedication to the field. His work continues to influence the industry, paving the way for future advancements in chemical synthesis.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile