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For the Inventor, By the Inventor

Takarazuka, Japan

Toshiro Tokuno

This inventor holds 6 USPTO granted patents. Top assignee: Mita Industrial Co., Ltd.. Active years: 1988-1995.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Toshiro Tokuno. Retrieved from https://idiyas.com/inventor/toshiro-tokuno

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 6

% Patents Active = 100.0

Average Co-Inventor Count = 2.5

ph-index = 3

Forward Citations = 39(Granted Patents)


Location History:

  • Nishinomiya, JP (1988 - 1989)
  • Takarazuka, JP (1992 - 1995)

Company Filing History:

goldMedal6 out of 1,344 
 
Mita Industrial Co., Ltd.
 patents

Years Active: 1988-1995

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6 patents (USPTO):Explore Patents
1. 5380615 - Process for producing a toner for development of electrostatic charged (1995-01-10),
2. 5364728 - Method of manufacturing a toner (1994-11-15),
3. 5364719 - Toner for developing electrostatic images (1994-11-15),
4. 5104764 - Process for preparation of polymer particles, process for preparation of (1992-04-14),
5. 4849318 - Processes for producing electrophotographic toner (1989-07-18),
6. 4777104 - Electrophotographic toner made by polymerizing monomers in solution in (1988-10-11),

Title: Toshiro Tokuno: Innovator in Toner Technology

Introduction

Toshiro Tokuno is a prominent inventor based in Takarazuka, Japan. He has made significant contributions to the field of toner technology, holding a total of 6 patents. His innovative approaches have led to advancements in the production and composition of toners used in electrostatic imaging.

Latest Patents

Tokuno's latest patents include a process for producing a toner for the development of electrostatically charged images. This process involves bulk- or solution-polymerizing a fixer resin in the presence of toner-characteristic imparting agents such as a colorant and a charge controlling agent. Notably, this method does not utilize a surface-active agent at any stage of production, resulting in a toner that is remarkably resistant to moisture. Furthermore, when a grafted carbon black is used as the colorant, the toner achieves a uniform dispersion throughout the fixer resin.

Another significant patent focuses on toner for developing electrostatic images. This toner contains at least a colorant and a charge control dye within a binding resin. The binding resin is formed from various monomers, including vinyl aromatic and acrylic types, ensuring optimal performance. The patent also discusses the use of magnetic pigments to enhance the toner’s properties.

Career Highlights

Tokuno is currently associated with Mita Industrial Co., Ltd., where he continues to innovate in the field of toner technology. His work has been instrumental in developing products that meet the evolving needs of the imaging industry.

Collaborations

Throughout his career, Tokuno has collaborated with notable colleagues, including Nobuhiro Hirano and Hiroshi Shimoyama. These partnerships have fostered a creative environment that has led to groundbreaking advancements in toner technology.

Conclusion

Toshiro Tokuno's contributions to toner technology exemplify his innovative spirit and dedication to advancing the field. His patents reflect a deep understanding of materials and processes that enhance the performance of electrostatic imaging.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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