Location History:
- Ibaraki, JA (1977)
- Ibaraki, JP (1979 - 1985)
- Osaka, JP (1982 - 1991)
- Toyonaka, JP (1991)
Company Filing History:
13 out of 6,896 
1 out of 5 Years Active: 1977-1991
Title: Hiroshi Yamachika: Innovator in Chemical Processes
Introduction
Hiroshi Yamachika is a prominent inventor based in Osaka, Japan. He has made significant contributions to the field of chemistry, particularly in the development of innovative chemical processes. With a total of 13 patents to his name, Yamachika has established himself as a key figure in the industry.
Latest Patents
Among his latest patents is a process for preparing substituted aminoanthraquinones. These compounds are utilized for dye stuffs or as intermediates, represented by a specific chemical formula. The process involves allowing anthraquinone compounds to react with alkylating agents in organic solvents, facilitated by organic quaternary ammonium salts and alkalies. Another notable patent is for producing an optically active α-isopropyl-p-chlorophenylacetic acid (ICPA), which features an asymmetric carbon atom in its structure.
Career Highlights
Yamachika has worked with several reputable companies throughout his career, including Sumitomo Chemical Company, Limited and Daiei Chemical Co., Ltd. His work in these organizations has contributed to advancements in chemical manufacturing and innovation.
Collaborations
He has collaborated with notable coworkers such as Kenji Saito and Yukihisa Takisawa, further enhancing his contributions to the field.
Conclusion
Hiroshi Yamachika's innovative work in chemical processes and his numerous patents highlight his significant impact on the industry. His contributions continue to influence advancements in chemical applications and processes.