This inventor holds 6 USPTO granted patents. Top assignee: Ricoh Company, Ltd.. Active years: 1992-1996.
Location History:
- Shizuoka, JP (1992 - 1995)
- Fuji, JP (1994 - 1996)
Company Filing History:
Years Active: 1992-1996
Title: Innovations by Tomoe Hagiwara
Introduction
Tomoe Hagiwara is a notable inventor based in Shizuoka, Japan. He has made significant contributions to the field of electrophotography and toner technology. With a total of 6 patents to his name, Hagiwara's work has had a considerable impact on the industry.
Latest Patents
Hagiwara's latest patents include a method and apparatus for measuring toner concentration in electrophotographic or electrostatic image forming devices. This innovative approach utilizes a magnetic bridge type concentration sensor that responds to the magnetic permeability of the developer. Additionally, he has developed a positively-chargeable toner that comprises a binder resin, a coloring agent, and a quaternary-ammonium-base containing copolymer. This copolymer has a specific weight-average molecular weight and includes various repeat units that enhance its performance.
Career Highlights
Hagiwara is currently employed at Ricoh Company, Ltd., where he continues to advance technology in the field of imaging. His expertise and innovative spirit have positioned him as a key player in the development of new imaging solutions.
Collaborations
Some of Hagiwara's coworkers include Masami Tomita and Motoi Orihara, who contribute to the collaborative environment at Ricoh Company, Ltd. Their combined efforts foster innovation and drive the company forward.
Conclusion
Tomoe Hagiwara's contributions to toner technology and electrophotography exemplify the spirit of innovation. His patents reflect a commitment to advancing the field and improving imaging technologies.