logo

For the Inventor, By the Inventor

Kawasaki, Japan

Hiroaki Kumagai

This inventor holds 9 USPTO granted patents. Top assignee: Canon Kabushiki Kaisha. Active years: 1993-1999.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroaki Kumagai. Retrieved from https://idiyas.com/inventor/hiroaki-kumagai

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 = 4.2

ph-index = 6

Forward Citations = 66(Granted Patents)


Location History:

  • Tokyo, JP (1993 - 1994)
  • Kawasaki, JP (1995 - 1999)
  • Yonago, JP (1998 - 1999)

Company Filing History:

goldMedal9 out of 92,994 
 
Canon Kabushiki Kaisha
 patents

Years Active: 1993-1999

Loading Chart...
9 patents (USPTO):Explore Patents
1. 5939337 - Toner fixation film and toner fixation apparatus using it (1999-08-17),
2. 5863660 - Fixing member and fixing apparatus including same (1999-01-26),
3. 5765086 - Heat fixing belt with conductive aluminum layer toner release layer and (1998-06-09),
4. 5763068 - Fluororesin-coated member, production method therefor and heat fixing (1998-06-09),
5. 5753348 - Fluororesin tube-covered fixing roller, and image formation apparatus (1998-05-19),
6. 5608508 - Rotatable member for fixing in which inorganic filler is contained in (1997-03-04),
7. 5392156 - Optical device (1995-02-21),
8. 5320936 - Photo responsive material employing a thiophene derivative having long (1994-06-14),
9. 5247098 - Thiophene derivative having long conjugated chain at 3-position, and (1993-09-21),

Title: Hiroaki Kumagai: Innovator in Toner Fixation Technology

Introduction

Hiroaki Kumagai is a prominent inventor based in Kawasaki, Japan. He has made significant contributions to the field of toner fixation technology, holding a total of 9 patents. His innovative work has been instrumental in advancing the efficiency and effectiveness of electrophotographic image forming apparatuses.

Latest Patents

Kumagai's latest patents include a toner fixation film and a toner fixation apparatus utilizing this film. The toner fixation film features an exothermic layer that generates heat through induced eddy currents when exposed to a magnetic field. This composite layer, which consists of both an exothermic part and a resin part, provides sufficient heat for toner fixation while maintaining the flexibility necessary for curvature separation. Additionally, the toner fixation apparatus incorporates the toner fixation film along with at least one coil designed to produce an alternating magnetic field for eddy current induction. Another notable patent involves a fixing member suitable for use in electrophotographic image forming apparatuses. This fixing member is created by applying a silicone rubber surface layer that contains a metal compound, enhancing wear resistance while ensuring good toner releasability.

Career Highlights

Hiroaki Kumagai is currently employed at Canon Kabushiki Kaisha, a leading company in imaging and printing technology. His work at Canon has allowed him to focus on developing innovative solutions that improve the performance of imaging devices.

Collaborations

Kumagai has collaborated with notable coworkers, including Kazuo Kishino and Masaaki Takahashi. Their combined expertise has contributed to the successful development of advanced technologies in the field.

Conclusion

Hiroaki Kumagai's contributions to toner fixation technology exemplify his innovative spirit and dedication to improving imaging solutions. His patents reflect a deep understanding of the technical challenges in the field and a commitment to advancing the technology for better performance.

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]
Loading…