This inventor holds 5 USPTO granted patents. Top assignees: Sumitomo Rubber Industries Limited, Sumio Gomu Kogyo Kabushiki Kaisha. Active years: 1995-2011.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Hyogo-ken, JP (1998)
- Kobe, JP (1995 - 2000)
- Hyogo, JP (1995 - 2011)
Company Filing History:
4 out of 4,548 
1 out of 1 Years Active: 1995-2011
Title: Hirotoshi Murakami: Innovator in Rubber Technology
Introduction
Hirotoshi Murakami is a notable inventor based in Hyogo, Japan. He has made significant contributions to the field of rubber technology, holding a total of 5 patents. His innovative work primarily focuses on semiconductive and elastic rubber rollers, which have applications in various industries.
Latest Patents
One of Murakami's latest patents is a semiconductive rubber roller. This roller comprises a toner-transporting portion whose outermost layer is formed essentially of vulcanized rubber containing 0.1 to 30 parts by mass of a phthalocyanine compound for every 100 parts by mass of the vulcanized rubber. The electric resistance value of this semiconductive rubber roller, measured at a temperature of 23°C and a humidity of 55%, falls within the range of 10 to 10Ω when a voltage of 100V is applied. Another significant patent is for an elastic roller, which contains EPDM rubber as its main component. This roller has a friction coefficient of not less than 2 with respect to ordinary paper and a hardness of not more than 35 degrees. The amount of softening agent added to the EPDM rubber is limited to not more than 150 parts by weight per 100 parts by weight of rubber.
Career Highlights
Throughout his career, Hirotoshi Murakami has worked with prominent companies such as Sumitomo Rubber Industries Limited and Sumio Gomu Kogyo Kabushiki Kaisha. His experience in these organizations has allowed him to refine his expertise in rubber technology and contribute to various innovative projects.
Collaborations
Murakami has collaborated with notable coworkers, including Hitoshi Itani and Yuji Yamasaki. Their combined efforts have led to advancements in the field of rubber technology, further enhancing the quality and functionality of their inventions.
Conclusion
Hirotoshi Murakami is a distinguished inventor whose work in rubber technology has led to several important patents. His contributions continue to influence the industry, showcasing the importance of innovation in material science.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile