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For the Inventor, By the Inventor

Hiratsuka, Japan

Hisayuki Ushiyama

This inventor holds 9 USPTO granted patents. Top assignee: Canon Kabushiki Kaisha. Active years: 1985-1989.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hisayuki Ushiyama. Retrieved from https://idiyas.com/inventor/hisayuki-ushiyama

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

USPTO Granted Patents = 9

% Patents Active = 100.0

Average Co-Inventor Count = 5.3

ph-index = 8

Forward Citations = 169(Granted Patents)


Company Filing History:

goldMedal9 out of 92,994 
 
Canon Kabushiki Kaisha
 patents

Years Active: 1985-1989

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9 patents (USPTO):Explore Patents
1. 4888264 - Process for preparing toner or capsule toner for use in (1989-12-19),
2. 4797344 - Encapsulated toner having shell with first vinyl polymer with Mn of (1989-01-10),
3. 4740443 - Encapsulated electrostatic toner with locally attached non-magnetic (1988-04-26),
4. 4626490 - Encapsulated toner (1986-12-02),
5. 4590142 - Capsule toner (1986-05-20),
6. 4581312 - Pressure-fixable capsule toner comprising pressure fixable core material (1986-04-08),
7. 4565764 - Microcapsule toner and process of making same (1986-01-21),
8. 4514485 - Developer for electrophotography having carrier particles, toner (1985-04-30),
9. 4497885 - Pressure-fixable microcapsule toner (1985-02-05),

Title: Hisayuki Ushiyama: Innovator in Toner Technology

Introduction

Hisayuki Ushiyama is a prominent inventor based in Hiratsuka, Japan. He has made significant contributions to the field of toner technology, holding a total of 9 patents. His work primarily focuses on the development of advanced toner formulations that enhance performance and durability.

Latest Patents

Ushiyama's latest patents include innovative processes for preparing toner or capsule toner. One notable patent describes a method involving a mixture of a colorant and a binder compound with an aliphatic hydrocarbon long chain. This mixture is kneaded in a molten state with solid media, resulting in a uniform mixture where colorant particles are disintegrated to a size of 5 micrometers or below. Additionally, he has developed encapsulated toner that features a shell made from vinyl polymers of different molecular weights, improving durability and triboelectric charging characteristics.

Career Highlights

Hisayuki Ushiyama is associated with Canon Kabushiki Kaisha, a leading company in imaging and printing technology. His work has significantly impacted the quality and efficiency of toner products, making them more effective for various applications.

Collaborations

Ushiyama has collaborated with notable colleagues such as Toshiaki Nakahara and Ichiro Ohsaki. Their combined expertise has contributed to the advancement of toner technology and the successful development of innovative products.

Conclusion

Hisayuki Ushiyama's contributions to toner technology through his patents and collaborations highlight his role as a key innovator in the field. His work continues to influence the industry, paving the way for future advancements in imaging technology.

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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