Location History:
- Kitasoma, JP (1979)
- Tokyo, JP (1994)
Company Filing History:
2 out of 14 
1 out of 52,722 
Years Active: 1979-1994
Title: Toshiaki Kurihara: Innovator in Chemical Engineering
Introduction
Toshiaki Kurihara is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of chemical engineering, particularly in the treatment of etching waste fluids and the recovery of caustic alkali.
Latest Patents
Kurihara holds two patents that showcase his innovative approaches. The first patent is a method of treating nickel-containing etching waste fluid. This method involves dissolving HCl gas in an etching waste fluid at temperatures ranging from 20°C to 50°C. It crystallizes NiCl2 and FeCl2 crystals from the waste fluid, which contains NiCl2, FeCl3, and FeCl2. The process includes distilling the mother liquor at atmospheric pressure to reduce HCl concentration and further distilling at reduced pressure to obtain an aqueous solution with minimal HCl.
The second patent is a process for recovering caustic alkali from spent alkali liquor. In this process, spent alkali liquor and iron oxide are roasted to produce alkali ferrate. The roasted product is then hydrolyzed at temperatures above 110°C under pressurized conditions, resulting in the recovery of caustic alkali in a concentrated aqueous solution.
Career Highlights
Throughout his career, Toshiaki Kurihara has worked with prominent companies such as Nittetu Chemical Engineering Ltd. and Toshiba Corporation. His experience in these organizations has allowed him to develop and refine his innovative techniques in chemical processing.
Collaborations
Kurihara has collaborated with notable colleagues, including Yoshiyuki Imagire and Teruhiko Hirabayashi. Their combined expertise has contributed to advancements in their respective fields.
Conclusion
Toshiaki Kurihara's work in chemical engineering, particularly in the treatment of etching waste fluids and the recovery of caustic alkali, highlights his innovative spirit and dedication to improving industrial processes. His patents reflect a commitment to environmental sustainability and efficiency in chemical manufacturing.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.