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For the Inventor, By the Inventor

Moriya, Japan

Takeshi Hashimoto

USPTO Granted Patents = 50 

 

Average Co-Inventor Count = 3.9

ph-index = 21

Forward Citations = 1,129(Granted Patents)

Forward Citations (Not Self Cited) = 809(Dec 10, 2025)


Location History:

  • Sakai, JP (1996)
  • Osaka, JP (1989 - 1998)
  • Chiba, JP (1999 - 2001)
  • Moriya, JP (2015 - 2021)
  • Ibaraki, JP (2023 - 2024)

Company Filing History:

goldMedal35 out of 90,697 
 
Canon Kabushiki Kaisha
 patents
silverMedal8 out of 2,979 
 
Minolta Camera Kabushiki Kaisha
 patents
bronzeMedal5 out of 25,550 
 
Sharp Kabushiki Kaisha Corporation
 patents
4. 1 out of 5 
 
Nihon Dennetsu Co., Ltd.
 patents
5. 1 out of 305 
 
Kanebo, Limited
 patents
6. 1 out of 173 
 
Kabushiki Kaisha Pilot Corporation
 patents
where one patent can have more than one assignee

Years Active: 1989-2025

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Areas of Expertise:
Toner
Two-Component Developer
Thermochromic Writing Instrument
Magnetic Carrier
Image-Forming Method
Developer Replenishing Cartridge
Media Selecting Device
3-D Texture Mapping
Camera Auto Zoom
Shutter Control Device
Organic Electrolytic Cell
Hermetic Packaging
50 patents (USPTO):Explore Patents
1. 12386279 - Toner (2025-08-12),
2. 12332599 - Toner (2025-06-17),
3. 12326690 - Toner and method for producing toner (2025-06-10),
4. 12275269 - Thermochromic writing instrument (2025-04-14),
5. 12271151 - Toner and method for manufacturing toner (2025-04-08),
6. 11914325 - Toner and method for producing toner (2024-02-27),
7. 11835873 - Toner and two component developer (2023-12-05),
8. 11809131 - Toner (2023-11-07),
9. 11714362 - Toner and two-component developer (2023-08-01),
10. 11675283 - Magnetic carrier, two-component developer, and method for producing magnetic carrier (2023-06-13),
11. 11662670 - Toner (2023-05-30),
12. 11624986 - Toner and method for manufacturing toner (2023-04-11),
13. 11131939 - Toner (2021-09-28),
14. 10969705 - Two-component developer (2021-04-06),
15. 10859931 - Toner and two-component developer (2020-12-08),

Couldn't find inventor

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