Location History:
- Yamato, JP (1979)
- Shin Nanyo, JP (1980 - 1981)
Company Filing History:
Years Active: 1979-1981
Title: Eiji Iwamoto: Innovator in Quinacridone Pigments
Introduction
Eiji Iwamoto is a notable inventor based in Yamato, Japan. He has made significant contributions to the field of pigment technology, particularly in the development of quinacridone pigments. With a total of 3 patents to his name, Iwamoto's work has had a considerable impact on the industry.
Latest Patents
Iwamoto's latest patents include a process for preparing gamma phase quinacridone. This innovative method involves dissolving a crude quinacridone in dimethyl sulfoxide with a caustic alkali and water. A mineral acid or a mixture of a mineral acid with a diluent is then added to neutralize the caustic alkali, resulting in finely divided gamma phase quinacridone pigments. Another significant patent is for purifying crude isoindolinone series pigments. This process yields isoindolinone pigments of extremely high purity, represented by a specific general formula.
Career Highlights
Eiji Iwamoto is associated with Toyo Soda Manufacturing Co., Ltd., where he has been instrumental in advancing pigment technology. His expertise and innovative approaches have positioned him as a key figure in the field.
Collaborations
Iwamoto has collaborated with notable colleagues, including Katusya Shibata and Motohiro Hamada. These partnerships have further enhanced the development of advanced pigment technologies.
Conclusion
Eiji Iwamoto's contributions to the field of pigment technology, particularly through his patents and collaborations, highlight his role as an influential inventor. His work continues to shape the industry and inspire future innovations.