Location History:
- Yokoyama, JP (1997)
- Yokohama, JP (1999)
- Kanagawa, JP (2001)
Company Filing History:
2 out of 1,788 
1 out of 1,379 
Years Active: 1997-2001
Title: Innovations of Hirotoshi Doki: A Pioneer in Polymer Chemistry
Introduction
Hirotoshi Doki, an accomplished inventor based in Yokoyama, Japan, has made significant contributions to the field of polymer chemistry. With a portfolio of three patents, he has established himself as an influential figure in the development of innovative materials and their applications in various industries.
Latest Patents
Among his latest patents, Doki has developed a novel polymer and its applications. This patent details a new polymer (B) that is synthesized by polymerizing one or more vinyl monomers (c) in the presence of another polymer (A), which is formed from vinyl monomers (a) specified in the invention. Additionally, he has introduced an acrylamide polymer characterized by a weight-average molecular weight ranging from 1,500,000 to 10,000,000 and a weight-average inertial radius of 30 to 150 nm. This acrylamide polymer serves as an effective paper strength agent, with specific attributes that ensure it meets industry standards for viscosity and molecular weight.
Career Highlights
Doki has an impressive career that includes notable positions at Mitsui Chemicals, Inc. and Mitsui Toatsu Chemicals, Incorporated. His work in these organizations has not only enhanced his expertise in polymer science but also allowed him to apply his inventions in practical settings.
Collaborations
Throughout his career, Hirotoshi Doki has collaborated with esteemed colleagues such as Toshiki Oyanagi and Tsugio Matsubara. These collaborations have further promoted innovation in polymer research and development, showcasing the importance of teamwork in scientific advancement.
Conclusion
Hirotoshi Doki's innovative approach to polymer chemistry has yielded valuable inventions that contribute to various industrial applications, particularly in paper production. His dedication to research and development, along with his high-profile collaborations, marks him as a prominent inventor in his field. With a continued focus on innovation, Doki is poised to further impact the world of polymer science.