Location History:
- Yokohama, JP (1990 - 1994)
- Hiratsuka, JP (1993 - 1996)
- Kanagawa, JP (1993 - 1996)
- Kanagawa-ken, JP (1997 - 2000)
Company Filing History:
12 out of 1,379 
1 out of 1,786 Years Active: 1990-2000
Title: **Nobuhiro Hirayama: Innovator in Toner Composition and Propylene Waxes**
Introduction
Nobuhiro Hirayama is a notable inventor hailing from Hiratsuka, Japan. He has made significant contributions to the field of materials science, particularly in the development of resin compositions for electrophotographic toners. With an impressive portfolio of 13 patents, Hirayama's innovations demonstrate a commitment to enhancing the performance of toner materials used in various printing technologies.
Latest Patents
Hirayama's latest patents focus on two primary areas: resin composition for electrophotographic toner and the production process for syndiotactic polypropylene wax.
The resin composition for electrophotographic toner consists of 5 to 95 parts by weight of a high molecular weight vinyl copolymer and 95 to 5 parts by weight of a low molecular weight vinyl copolymer. This innovative mixture is designed to showcase excellent charging characteristics, even in the absence of a charge control agent or with a reduced amount of such an agent.
Additionally, the patented production process for propylene waxes involves polymerizing propylene using a solid catalyst and managing hydrogen partial pressure in the reaction vessel. This breakthrough has significant implications for the creation of toner compositions that require a high-quality releasing agent.
Career Highlights
Hirayama has built a career marked by partnerships with leading companies in the chemical industry, including Mitsui Toatsu Chemicals, Incorporated and Mitsui Chemicals, Inc. His work in these prestigious organizations has allowed him to innovate and develop advanced materials that are widely utilized in various industrial applications.
Collaborations
Throughout his career, Hirayama has collaborated with notable professionals, including Shoji Kawasaki and Kenji Uchiyama. These partnerships have fostered an environment of creativity and innovation that has contributed to the success of his inventions.
Conclusion
Nobuhiro Hirayama stands out as a prominent figure in the realm of material innovation, particularly known for his advancements in toner compositions and propylene wax production. His contributions have not only enhanced the efficiency of printing technologies but have also provided valuable insights into the development of high-performance materials. With 13 patents to his name, Hirayama continues to inspire future inventors in the field of materials science.
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.