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For the Inventor, By the Inventor

Minamiashigara, Japan

Fumio Ojima

This inventor holds 18 USPTO granted patents. Top assignee: Fuji Xerox Co., Ltd.. Active years: 1991-2010.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Fumio Ojima. Retrieved from https://idiyas.com/inventor/fumio-ojima

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

USPTO Granted Patents = 18

% Patents Active = 100.0

Average Co-Inventor Count = 5.7

ph-index = 6

Forward Citations = 123(Granted Patents)


Location History:

  • Minami-ashigara, JP (1995 - 2008)
  • Kanagawa, JP (1991 - 2010)

Company Filing History:

goldMedal18 out of 11,665 
 
Fuji Xerox Co., Ltd.
 patents

Years Active: 1991-2010

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18 patents (USPTO):Explore Patents
1. 7801461 - Charging member cleaning roller, charging member cleaning roller for charging device, process cartridge and image forming apparatus (2010-09-21),
2. 7410741 - Toner for electrophotography and developer for electrophotography, as well as image forming method (2008-08-12),
3. 6268096 - Titanyl phthalocyanine crystal and electrophotographic photoreceptor using the same (2001-07-31),
4. 6010810 - Electrophotographic photoreceptor, process for the preparation thereof (2000-01-04),
5. 5955230 - Electrophotographic photoreceptor having protective layer and method for (1999-09-21),
6. 5948579 - Electrophotographic photosensitive material (1999-09-07),
7. 5702856 - Method for making an image and a photosensitive body for liquid (1997-12-30),
8. 5654119 - Organic electronic device comprising charge-transporting polyester and (1997-08-05),
9. 5626997 - Electrophotographic process (1997-05-06),
10. 5578406 - Electrophotographic photoreceptor (1996-11-26),
11. 5529868 - Electrophotographic photoreceptor (1996-06-25),
12. 5440029 - Titanyl phthalocyanine crystal (1995-08-08),
13. 5424159 - Electrophotographic photoreceptor (1995-06-13),
14. 5393629 - Electrophotographic photoreceptor (1995-02-28),
15. 5382489 - Electrophotographic photoreceptor with polycarbonate resin mixture (1995-01-17),

Title: Fumio Ojima: Innovator in Electrophotography Technologies

Introduction

Fumio Ojima is a prominent inventor based in Minami-ashigara, Japan. He has made significant contributions to the field of electrophotography, holding a total of 18 patents. His innovative work has advanced the technology used in imaging and printing devices.

Latest Patents

Ojima's latest patents include several groundbreaking inventions. One of his notable patents is a charging member cleaning roller, which features a core body and an elastic layer made from a polyurethane foam derived from a polyester polyol, a foam stabilizer, and a catalyst. Another significant patent involves a charging member cleaning roller that includes a urethane foam with an open-cell structure, resilience of approximately 15% to 30%, and hardness of approximately 150N to 230N. Additionally, he has developed a toner for electrophotography that contains a binder resin and a coloring agent, characterized by a crystalline polyester resin and a low-molecular compound with a naphthalene or biphenyl skeleton.

Career Highlights

Fumio Ojima is currently employed at Fuji Xerox Co., Ltd., where he continues to innovate and develop new technologies. His work has been instrumental in enhancing the efficiency and quality of electrophotographic processes.

Collaborations

Ojima has collaborated with several talented individuals in his field, including Kiyokazu Mashimo and Toru Ishii. These collaborations have contributed to the success of his projects and the advancement of technology in electrophotography.

Conclusion

Fumio Ojima's contributions to the field of electrophotography are noteworthy and impactful. His innovative patents and collaborations have significantly advanced imaging technology, making him a key figure in this industry.

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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