Location History:
- Kanagawa, JP (1983)
- Kawasaki, JP (1992)
- Akishima, JP (1990 - 1993)
- Tokyo, JP (1998)
- Otake, JP (1995 - 2017)
- Hiroshima, JP (2017 - 2018)
Company Filing History:
13 out of 1,357 
2 out of 2,346 
1 out of 3 
Years Active: 1983-2018
Title: Keiichi Sakashita: Innovator in Flame-Resistant Polymers
Introduction
Keiichi Sakashita is a prominent inventor based in Otake, Japan, known for his significant contributions to the field of polymer science. With a total of 17 patents to his name, he has made remarkable advancements in the development of flame-resistant materials.
Latest Patents
Sakashita's latest patents include innovations such as partially cyclized polyacrylonitrile polymer, polyacrylonitrile flame-resistant polymer, polyacrylonitrile flame-resistant fiber, and carbon fiber. His work focuses on creating high-quality flame-resistant fibers and carbon fibers at low costs. The preparation methods he describes allow for an efficient flame retardation process that is quicker than conventional technologies. One of his notable methods involves degenerating a polyacrylonitrile (PAN) polymer with an oxidizing agent containing a thiolate compound, which results in the formation of flame-resistant PAN fibers. These fibers can then be heated to produce carbon fibers with excellent mechanical strength.
Career Highlights
Throughout his career, Keiichi Sakashita has worked with leading companies in the chemical industry, including Mitsubishi Rayon Company, Limited and Mitsubishi Chemical Corporation. His expertise in polymer chemistry has positioned him as a key figure in the development of advanced materials.
Collaborations
Sakashita has collaborated with notable colleagues such as Yoshitaka Kageyama and Jun Nakauchi, contributing to the advancement of flame-resistant technologies.
Conclusion
Keiichi Sakashita's innovative work in the field of flame-resistant polymers has made a significant impact on material science. His patents reflect a commitment to enhancing the safety and performance of fibers and composites.
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.