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For the Inventor, By the Inventor

Yokohama, Japan

Masaaki Kumamura

This inventor holds 7 USPTO granted patents. Top assignee: Canon Kabushiki Kaisha. Active years: 1992-2002.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masaaki Kumamura. Retrieved from https://idiyas.com/inventor/masaaki-kumamura

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

USPTO Granted Patents = 7

% Patents Active = 100.0

Average Co-Inventor Count = 5.4

ph-index = 6

Forward Citations = 55(Granted Patents)


Company Filing History:

goldMedal7 out of 92,901 
 
Canon Kabushiki Kaisha
 patents

Years Active: 1992-2002

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7 patents (USPTO):Explore Patents
1. 6447707 - Molding method of thermosetting resin and mold with unnecessary gap heating (2002-09-10),
2. 6223014 - Developer-regulating member, development device, process cartridge, and process for producing developer-regulating member (2001-04-24),
3. 5217725 - Electrically driven type injection molding apparatus (1993-06-08),
4. 5143736 - Nozzle touch device in an injection molding apparatus (1992-09-01),
5. 5110522 - Electrically driven type injection molding method (1992-05-05),
6. 5102587 - Injection mold using screw thrust control (1992-04-07),
7. 5092753 - Electric injection molding apparatus (1992-03-03),

Title: Masaaki Kumamura: Innovator in Molding Technology

Introduction

Masaaki Kumamura is a prominent inventor based in Yokohama, Japan. He has made significant contributions to the field of molding technology, particularly in thermosetting resins. With a total of 7 patents to his name, Kumamura continues to push the boundaries of innovation in his industry.

Latest Patents

Kumamura's latest patents include a molding method of thermosetting resin and a mold with unnecessary gap heating. This innovative method prevents the formation of flash by pouring or injecting thermosetting resin into a mold, followed by heating and molding. The process involves locally heating unnecessary gaps and their peripheries, ensuring that the resin sets promptly and reduces leakage. Another notable patent is for a developer-regulating member, which features a rubber elastomer blade pressed against a developer-feeding member. This design enhances the efficiency of the development process in various applications.

Career Highlights

Masaaki Kumamura is currently employed at Canon Kabushiki Kaisha, where he applies his expertise in molding technology. His work has been instrumental in advancing the company's product offerings and enhancing their manufacturing processes.

Collaborations

Kumamura has collaborated with notable coworkers, including Ryohei Inaba and Yozo Tobo. Their combined efforts have led to innovative solutions and improvements in their respective fields.

Conclusion

Masaaki Kumamura is a distinguished inventor whose work in molding technology has made a significant impact. His innovative patents and contributions to Canon Kabushiki Kaisha highlight his dedication to advancing the industry.

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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