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For the Inventor, By the Inventor

Osaka, Japan

Yoritaka Tsubaki

USPTO Granted Patents = 29 

Average Co-Inventor Count = 3.5

ph-index = 4

Forward Citations = 62(Granted Patents)


Location History:

  • Yamatokoriyama, JP (1999 - 2003)
  • Nara, JP (2010 - 2013)
  • Osaka, JP (2012 - 2016)
  • Sakai, JP (2017 - 2024)

Company Filing History:

goldMedal29 out of 25,530 
 
Sharp Kabushiki Kaisha Corporation
 patents

Years Active: 1999-2024

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29 patents (USPTO):Explore Patents
1. 11947313 - Toner and two-component developer (2024-04-02),
2. 11619889 - Two-component developer, developing device, and image forming device (2023-04-04),
3. 10732531 - Toner, two-component developer, and method for producing toner (2020-08-04),
4. 9885968 - Toner (2018-02-06),
5. 9535350 - Method for producing ground toner (2017-01-03),
6. 9274447 - Two-component color developer and image formation device using same (2016-03-01),
7. 9250549 - Full-color toner set, full-color developer set, image-formation method using same, and image-formation device (2016-02-02),
8. 8609316 - Method for manufacturing capsule toner (2013-12-17),
9. 8431317 - Method for manufacturing capsule toner (2013-04-30),
10. 8431316 - Toner manufacturing method (2013-04-30),
11. 8431315 - Capsule toner, method of manufacturing the same, and two-component developer (2013-04-30),
12. 8431305 - Capsule toner, two-component developer, and image forming apparatus (2013-04-30),
13. 8409777 - Toner and method of manufacturing the same (2013-04-02),
14. 8399171 - Method of manufacturing resin-layer coated carrier, resin-layer coated carrier, developer, developing device, and image forming apparatus (2013-03-19),
15. 8389195 - Capsule toner and method of manufacturing capsule toner (2013-03-05),

Title: Yoritaka Tsubaki: Innovator in Toner Technology

Introduction: Yoritaka Tsubaki is a prominent inventor based in Osaka, Japan, renowned for his significant contributions to toner technology. With an impressive portfolio of 29 patents, Tsubaki has established himself as a key player in the field of imaging technology, particularly through his work with Sharp Kabushiki Kaisha Corporation.

Latest Patents: Tsubaki's recent innovations include a patent focused on toner properties that specify the peak top molecular weight of the tetrahydrofuran-soluble component, which ranges between 4,000 and 6,500. Additionally, this invention outlines that the tetrahydrofuran-insoluble component should be between 10% and 30% by weight. Another noteworthy patent involves a two-component developer, specifying a carrier and toner that must meet certain voltage relationships. The carrier must satisfy the equations 100 ≤ α ≤ 220 and 300 ≤ β ≤ 480 when measured through a bridge resistance method in one-volt steps.

Career Highlights: Tsubaki's career is marked by numerous patents in the toner and imaging technology sector. His work has not only advanced the capabilities of imaging devices but has also significantly enhanced their efficiency and performance. Through Sharp Corporation, Tsubaki has played a vital role in shaping the future of toner and developer technologies.

Collaborations: Throughout his career, Yoritaka Tsubaki has collaborated with talented coworkers such as Keiichi Kikawa and Yoshitaka Kawase. These partnerships have fostered a creative and innovative environment, leading to breakthroughs in detaining superior imaging technologies.

Conclusion: Yoritaka Tsubaki's dedication to innovation in toner technology has resulted in 29 patents that continue to influence the industry. His contributions, particularly while working at Sharp Corporation, demonstrate the importance of creativity and collaboration in achieving technological advancements. As he continues to develop new solutions, Tsubaki remains a figure to watch in the realm of imaging technology.

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