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For the Inventor, By the Inventor

Osaka, Japan

Yasuyuki Hanatani

This inventor holds 18 USPTO granted patents. Top assignee: Mita Industrial Co., Ltd.. Active years: 1990-1998.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yasuyuki Hanatani. Retrieved from https://idiyas.com/inventor/yasuyuki-hanatani

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 = 3.3

ph-index = 6

Forward Citations = 76(Granted Patents)


Location History:

  • Sakai, JP (1991 - 1994)
  • Osaka, JP (1990 - 1998)

Company Filing History:

goldMedal18 out of 1,344 
 
Mita Industrial Co., Ltd.
 patents

Years Active: 1990-1998

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18 patents (USPTO):Explore Patents
1. 5851712 - Electrophotosensitive material (1998-12-22),
2. 5843606 - Phenanthrylenediamine derivative (1998-12-01),
3. 5830615 - Naphthylenediamine derivative and electrophotosensitive material using (1998-11-03),
4. 5773613 - Tryptoanthrinimine derivative and electrophotosensitive material using (1998-06-30),
5. 5521044 - Electrophotosensitive material (1996-05-28),
6. 5499486 - Process for packing electrophotographic photoreceptor (1996-03-19),
7. 5336576 - Electrophotographic photosensitive member having a photosensitive layer (1994-08-09),
8. 5288576 - Electrophotographic member having an azo compound with diphenoquinone (1994-02-22),
9. 5274084 - Bisazo compounds which contain a diphenoquinone tetraazo component and (1993-12-28),
10. 5272031 - Benzidine derivative and photosensitive material using said derivative (1993-12-21),
11. 5258251 - Hydrazone compound and photosensitive material using said compound (1993-11-02),
12. 5256508 - Hydrazone compound and photosensitive material using said compound (1993-10-26),
13. 5246808 - Hydrazone compound and photosensitive material using said compound (1993-09-21),
14. 5213926 - Phenylenediamine derivative and photosensitive material using said (1993-05-25),
15. 5135834 - Electrophotographic polyvinyl acetal layer containing element and (1992-08-04),

Title: Innovations of Yasuyuki Hanatani

Introduction

Yasuyuki Hanatani is a prominent inventor based in Osaka, Japan. He has made significant contributions to the field of electrophotosensitive materials, holding a total of 18 patents. His work has advanced the technology used in various applications, showcasing his expertise and innovative spirit.

Latest Patents

Among his latest patents, Hanatani has developed an electrophotosensitive material that incorporates a photosensitive layer containing a bis-azo pigment. This material is designed to enhance sensitivity and durability, making it a valuable asset in the industry. Additionally, he has created a phenanthrylenediamine derivative that excels in electric charge transferring capability, compatibility with binding resins, and stability. These innovations reflect his commitment to improving the performance of photosensitive materials.

Career Highlights

Yasuyuki Hanatani is currently associated with Mita Industrial Co., Ltd., where he continues to push the boundaries of technology. His work has not only contributed to the company's success but has also positioned him as a key figure in the field of materials science.

Collaborations

Hanatani has collaborated with notable coworkers such as Hiroaki Iwasaki and Eiichi Miyamoto. These partnerships have fostered a creative environment that encourages innovation and the development of cutting-edge technologies.

Conclusion

Yasuyuki Hanatani's contributions to the field of electrophotosensitive materials are noteworthy and impactful. His innovative patents and collaborations highlight his role as a leading inventor in Japan.

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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