logo

For the Inventor, By the Inventor

Kyoto, Japan

Yoshifumi Takeyama

This inventor holds 28 USPTO granted patents, primarily in Photovoltaic Technology. Top assignee: Canon Kabushiki Kaisha. Active years: 1997-2014.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoshifumi Takeyama. Retrieved from https://idiyas.com/inventor/yoshifumi-takeyama

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

USPTO Granted Patents = 28

% Patents Active = 64.3

Average Co-Inventor Count = 2.7

ph-index = 14

Forward Citations = 821(Granted Patents)


Location History:

  • Tsuzuki-gun, JP (1997)
  • Soraku-gun, JP (2000 - 2001)
  • Soura-gun, JP (2001)
  • Kyoto-fu, JP (2001 - 2003)
  • Shiga, JP (2009)
  • Kyoto, JP (1999 - 2010)
  • Mishima, JP (2012 - 2014)

Company Filing History:

goldMedal28 out of 93,085 
 
Canon Kabushiki Kaisha
 patents

Years Active: 1997-2014

Loading Chart...
Areas of Expertise:
Photovoltaic Element
Solar Cell Module
Manufacturing Method
Semiconductor Device
Non-Contact Treatment
Inspection Method
Thermal Contact-Bonding
Cartridge Design
Process Cartridge
Electrophotographic
Welding Process
Covering Member
28 patents (USPTO):Explore Patents
1. 8913920 - Cover and cartridge (2014-12-16),
2. 8798499 - Image forming apparatus having image bearing member guide portions (2014-08-05),
3. 8666279 - Image forming apparatus having process cartridge guide portions (2014-03-04),
4. 8417152 - Process cartridge and image forming apparatus (2013-04-09),
5. 8326178 - Covering member and cartridge (2012-12-04),
6. 8190058 - Drum cartridge including detachable spacer member and electrophotographic image forming apparatus (2012-05-29),
7. 8180251 - Cover and cartridge (2012-05-15),
8. 7687708 - Photovoltaic cell having a coating film provided on a photovoltaic element and manufacturing method thereof (2010-03-30),
9. 7537670 - Thermal contact-bonding method and thermal contact-bonding apparatus (2009-05-26),
10. 6984804 - Non-contact treatment method (2006-01-10),
11. 6803514 - MOUNTING STRUCTURE AND MOUNTING METHOD OF A PHOTOVOLTAIC ELEMENT, MOUNTING SUBSTRATE FOR MOUNTING A SEMICONDUCTOR ELEMENT THEREON AND METHOD FOR MOUNTING A SEMICONDUCTOR ELEMENT ON SAID MOUNTING SUBSTRATE (2004-10-12),
12. 6664597 - Substrate for mounting a semiconductor element thereon and semiconductor device comprising a semiconductor element mounted on said substrate (2003-12-16),
13. 6515218 - Photovoltaic element, process for the production thereof, method for removing a cover portion of a covered wire, and method for joining a covered wire and a conductor (2003-02-04),
14. 6511861 - Method of producing photovoltaic element module (2003-01-28),
15. 6479744 - Photovoltaic device module (2002-11-12),

Title: Innovations of Yoshifumi Takeyama: A Pioneer in Electrophotographic Technologies

Introduction: Yoshifumi Takeyama, an esteemed inventor based in Kyoto, Japan, has made significant contributions to the field of electrophotographic imaging. With an impressive portfolio of 28 patents, he has demonstrated a remarkable ability to innovate and enhance imaging technology, solidifying his place in the industry.

Latest Patents: Among his latest innovations are several groundbreaking patents that focus on electrophotographic image forming apparatuses. One noteworthy patent describes a system that incorporates a detachable cover and cartridge, featuring a rotatable image-bearing member designed for optimal formation of latent images. This technology boasts a sophisticated charging mechanism that ensures the charged surface of the image-bearing member is protected by a demountable covering. Another significant patent involves an image forming apparatus with a guide system that expertly facilitates the cartridge's interaction with critical components, enhancing the transfer of developed images to recording materials.

Career Highlights: Yoshifumi Takeyama has dedicated his career to advancing imaging technologies, primarily through his work with Canon Kabushiki Kaisha. His contributions have not only enriched the company's product offerings but have also influenced the broader field of electrophotography. His patents highlight innovative approaches to connectivity, functionality, and efficiency within imaging systems.

Collaborations: Throughout his career, Takeyama has worked alongside notable colleagues, including Koji Tsuzuki and Tsutomu Murakami. These collaborations have been integral in refining his inventions and furthering the impact of their collective work on the electrophotographic landscape.

Conclusion: Yoshifumi Takeyama's innovative spirit and dedication to improving imaging technology are evident through his extensive list of patents and collaborations. His work at Canon Kabushiki Kaisha continues to inspire advancements in the field, ensuring that his contributions are recognized as pivotal in the development of modern electrophotographic apparatuses. His legacy as an inventor will have a lasting impact on future innovations.

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…