Osaka, Japan

Hiroaki Iwasaki

This inventor holds 20 USPTO granted patents, primarily in Electrophotographic Materials. Top assignees: Mita Industrial Co., Ltd., Kyocera Mita Corporation. Active years: 1993-2011.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroaki Iwasaki. Retrieved from https://idiyas.com/inventor/hiroaki-iwasaki

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

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 3.7

ph-index = 5

Forward Citations = 72(Granted Patents)


Location History:

  • Hirakata, JP (1993 - 1994)
  • Osaka, JP (1993 - 2011)

Company Filing History:


Years Active: 1993-2011

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Areas of Expertise:
Electrophotosensitive Material
Image Forming Apparatus
Photosensitive Drum
Naphthylenediamine Derivative
Tryptoanthrinimine Derivative
Azo Compound
Bisazo Compounds
Hydrazone Compound
Laminate Type Material
p-Benzylbiphenyl
20 patents (USPTO):Explore Patents

Title: Innovations by Hiroaki Iwasaki: A Pioneer in Electrophotosensitive Technology

Introduction: Hiroaki Iwasaki, an accomplished inventor based in Osaka, Japan, has made significant contributions to the field of electrophotosensitive materials. With a remarkable portfolio of 20 patents, Iwasaki continues to push the boundaries of innovation, particularly in image forming technologies.

Latest Patents: Among his latest inventions, Iwasaki has developed a cutting-edge single-layer type electrophotosensitive material. This innovative material consists of a conductive substrate with a photosensitive layer that incorporates a phthalocyanine compound as an electric charge generating material. Notably, his invention also features a hole transferring material and an electron transferring material, all embedded within a binder resin. One of the key advancements in this technology is the minimized difference in absolute values between plus polarity sensitivity and minus polarity sensitivity, measured under specific exposure conditions. This advancement is complemented by a reversal development type digital image forming apparatus that effectively utilizes this electrophotosensitive material without requiring a charge neutralizing step.

Career Highlights: Hiroaki Iwasaki has a distinguished career that includes significant roles at Mita Industrial Co., Ltd. and Kyocera Mita Corporation. His work in these companies has allowed him to harness his expertise and drive forward the development of innovative technologies, which have had a lasting impact on the industry.

Collaborations: Throughout his career, Iwasaki has collaborated with several notable professionals, including Yasuyuki Hanatani and Eiichi Miyamoto. These partnerships have contributed to the refinement and success of his inventions, fostering a collaborative environment that enhances innovation.

Conclusion: Hiroaki Iwasaki stands out as a pivotal figure in the realm of electrophotosensitive materials and image forming technologies. His extensive patent portfolio and collaborative efforts exemplify his commitment to advancing technological innovations. With ongoing contributions to the industry, Iwasaki's work continues to inspire future generations of inventors and researchers.

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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