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For the Inventor, By the Inventor

Osaka, Japan

Yasuyuki Ishiguro

USPTO Granted Patents = 53 

Average Co-Inventor Count = 3.9

ph-index = 11

Forward Citations = 369(Granted Patents)

Forward Citations (Not Self Cited) = 363(Oct 12, 2025)


Inventors with similar research interests:


Location History:

  • Osaka-fu, JP (2002)
  • Higashiosaka, JP (1999 - 2012)
  • Osaka, JP (1988 - 2016)
  • Sakai, JP (2018 - 2019)

Company Filing History:

goldMedal44 out of 25,530 
 
Sharp Kabushiki Kaisha Corporation
 patents
silverMedal9 out of 1,344 
 
Mita Industrial Co., Ltd.
 patents

Years Active: 1988-2019

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53 patents (USPTO):Explore Patents
1. 10466624 - Toner cartridge and image forming apparatus (2019-11-05),
2. 9992369 - Image forming apparatus having display section displaying environmental certification information during startup and being foldable into a generally flush accommodated state (2018-06-05),
3. 9291988 - Image forming apparatus including cartridge position detector (2016-03-22),
4. 9152967 - Image forming apparatus, consumables ordering system and consumables ordering method (2015-10-06),
5. 8731441 - Charging roller and image forming apparatus (2014-05-20),
6. 8730494 - Image forming apparatus including display device (2014-05-20),
7. 8724129 - Image forming apparatus, system for ordering optional device, and method for ordering optional device (2014-05-13),
8. 8532523 - Toner cartridge having a toner flowing-out preventing member and image forming apparatus using the same (2013-09-10),
9. 8417160 - Toner cartridge including a toner flowing-out preventing valve (2013-04-09),
10. 8412077 - Developing device and image forming apparatus using the same (2013-04-02),
11. 8270882 - Developing device and image forming apparatus using the same (2012-09-18),
12. 8238797 - Toner cartridge and image forming apparatus using the same (2012-08-07),
13. 8099014 - Image forming apparatus (2012-01-17),
14. 8095049 - Toner cartridge and image forming apparatus using the same (2012-01-10),
15. 7925182 - Image forming apparatus (2011-04-12),

Title: The Innovative Contributions of Yasuyuki Ishiguro

Introduction: Yasuyuki Ishiguro, based in Osaka, Japan, is a renowned inventor with a remarkable portfolio of 53 patents. His inventions primarily focus on enhancing the efficiency and functionality of imaging and toner technologies.

Latest Patents: Among his latest patents is an advanced toner cartridge design that features a screw mechanism for delivering stirred toner to an outlet. This design includes a partition that separates the screw from a toner stirrer, creating a closed space that optimizes toner dispensing. Another noteworthy invention is an image forming apparatus that boasts a display section capable of presenting environmental certification information at startup. This apparatus is designed to fold into a compact form while ensuring seamless operation when accepting user instructions.

Career Highlights: Yasuyuki Ishiguro's career includes significant tenures at notable companies such as Sharp Corporation and Mita Industrial Co., Ltd. His engineering expertise and inventive spirit have driven his contributions to the field of imaging technology, making a substantial impact on how these devices operate.

Collaborations: Throughout his career, Ishiguro has collaborated with several talented professionals, including Jun Yamaguchi and Toshio Nishino. These partnerships have enriched his innovative work, allowing for the exchange of ideas and collaborative development on various projects.

Conclusion: Yasuyuki Ishiguro's dedication to innovation and improvement in imaging technologies positions him as an influential figure in his field. With numerous patents to his name, his contributions continue to pave the way for advancements that enhance functionality and efficiency in imaging systems.

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