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For the Inventor, By the Inventor

Mishima, Japan

Masataka Kawahara

This inventor holds 53 USPTO granted patents and 14 published patent applications and 11 EPO patents, primarily in Electrophotographic Technology (CPC class G03G). Top assignee: Canon Kabushiki Kaisha. Active years: 1999-2022.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masataka Kawahara. Retrieved from https://idiyas.com/inventor/masataka-kawahara

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

USPTO Granted Patents = 53 

% Patents Active = 66.0

 

Average Co-Inventor Count = 4.6

ph-index = 19

Forward Citations = 755(Granted Patents)

Forward Citations (Not Self Cited) = 589(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Shizuoka-ken, JP (1999 - 2003)
  • Mishimi, JP (2008)
  • Mishima, JP (2003 - 2022)

Company Filing History:

goldMedal53 out of 92,994 
 
Canon Kabushiki Kaisha
 patents

Years Active: 1999-2022

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Areas of Expertise:
Electrophotographic
Photosensitive Member
Process Cartridge
Phthalocyanine Crystal
Gallium Phthalocyanine
Manufacturing Method
Image Forming Method
Polyvinyl Acetal Resin
Chlorogallium Phthalocyanine
Hydroxygallium Phthalocyanine
Electrophotographic Apparatus
Crystal Production
53 patents (USPTO):Explore Patents
1. 11249407 - Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus (2022-02-15),
2. 11237493 - Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus (2022-02-01),
3. 11181837 - Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus (2021-11-23),
4. 11126097 - Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus (2021-09-21),
5. 10838313 - Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus (2020-11-17),
6. 10429753 - Electrophotographic photoconductor, process cartridge, and electrophotographic apparatus (2019-10-01),
7. 10401746 - Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus (2019-09-03),
8. 10012915 - Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus, and chlorogallium phthalocyanine crystal and method for producing the same (2018-07-03),
9. 9921499 - Electrophotographic photosensitive member, process cartridge, electrophotographic apparatus, and phthalocyanine pigment (2018-03-20),
10. 9869032 - Manufacturing method of phthalocyanine crystal by milling crystal transformation for at least 1,000 hours (2018-01-16),
11. 9864284 - Electrophotographic photosensitive member, method for manufacturing electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus (2018-01-09),
12. 9753385 - Electrophotographic photosensitive member, method for manufacturing electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus (2017-09-05),
13. 9746790 - Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus, and chlorogallium phthalocyanine crystal and method for producing the same (2017-08-29),
14. 9720337 - Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus, and chlorogallium phthalocyanine crystal and method for producing the same (2017-08-01),
15. 9709907 - Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus (2017-07-18),

Title: Innovator Spotlight: Masataka Kawahara and his Cutting-Edge Electrophotographic Inventions

Introduction: Masataka Kawahara, a prolific inventor hailing from Mishima, Japan, has made significant contributions to the field of electrophotography with an impressive portfolio of 53 patents.

Latest Patents: Kawahara's latest patents showcase his expertise in developing innovative technologies for electrophotographic photosensitive members, process cartridges, and electrophotographic apparatus. His inventions focus on improving the performance and longevity of these components through precise film thickness and material composition requirements.

Career Highlights: Masataka Kawahara is a valuable asset at Canon Kabushiki Kaisha, where he channels his creativity and technical skills to drive advancements in electrophotography. His dedication to research and development has resulted in numerous successful patent applications that have revolutionized the industry.

Collaborations: Kawahara's collaborative spirit is evident through his work with colleagues such as Takeshi Murakami and Kaname Watariguchi. Together, they have synergized their expertise to push the boundaries of innovation in electrophotography.

Conclusion: Masataka Kawahara stands as a testament to the power of innovation and dedication in the realm of electrophotography. His groundbreaking inventions continue to shape the industry and inspire future generations of inventors to push the boundaries of what is possible.

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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