Location History:
- Tokyo, JP (1980)
- Tokorozawa, JP (1982 - 1986)
- Kyobashi, JP (1987)
Company Filing History:
5 out of 223 
1 out of 105 
1 out of 2,979 Years Active: 1980-1987
Title: Hiromitsu Katsura: Innovator in Pigment Technology
Introduction
Hiromitsu Katsura is a notable inventor based in Tokorozawa, Japan. He has made significant contributions to the field of pigment technology, holding a total of 6 patents. His work focuses on developing advanced pigment compositions and electrophotographic photoreceptors.
Latest Patents
Katsura's latest patents include a pigment composition that consists of 100 parts by weight of a pigment, along with 0.1 to 30 parts by weight of a pigment dispersant. This dispersant features various dye or pigment radicals, including anthraquinone, azo, and phthalocyanine, among others. The resulting pigment compositions exhibit improved fluidity, superior stability, and gloss. Another significant patent involves an electrophotographic photoreceptor that maintains excellent characteristics even under high-temperature and high-humidity conditions. This photoreceptor is formed from a phthalocyanine treated with an acrylic resin, ensuring its reliability in various environments.
Career Highlights
Throughout his career, Katsura has worked with prominent companies such as Toyo Ink Manufacturing Company and Toyo Ink Mfg. Co., Ltd. His expertise in pigment technology has positioned him as a key figure in the industry, contributing to advancements that enhance product performance.
Collaborations
Katsura has collaborated with notable coworkers, including Shigeyuki Ehashi and Junichi Tsuchida. Their combined efforts have led to innovative solutions in pigment applications.
Conclusion
Hiromitsu Katsura's contributions to pigment technology through his patents and collaborations highlight his role as an influential inventor in the field. His work continues to impact the industry positively.
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.