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For the Inventor, By the Inventor

Tokyo, Japan

Kazunori Murakawa

This inventor holds 5 USPTO granted patents. Top assignee: Canon Kabushiki Kaisha. Active years: 1984-1987.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kazunori Murakawa. Retrieved from https://idiyas.com/inventor/kazunori-murakawa

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

USPTO Granted Patents = 5

% Patents Active = 100.0

Average Co-Inventor Count = 5.5

ph-index = 5

Forward Citations = 107(Granted Patents)


Company Filing History:

goldMedal5 out of 93,085 
 
Canon Kabushiki Kaisha
 patents

Years Active: 1984-1987

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5 patents (USPTO):Explore Patents
1. 4640882 - Image forming method of negative latent images using silica particles (1987-02-03),
2. 4626487 - Particulate developer containing inorganic scraper particles and image (1986-12-02),
3. 4568625 - Developer comprising a modified silicone oil and development process for (1986-02-04),
4. 4543312 - Magnetic toner comprising magnetic powders having controlled size (1985-09-24),
5. 4448870 - Magnetic color toner (1984-05-15),

Title: Kazunori Murakawa: Innovator in Image Forming Technologies

Introduction

Kazunori Murakawa is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of image forming technologies, holding a total of 5 patents. His work primarily focuses on developing methods that enhance the quality and efficiency of image reproduction.

Latest Patents

One of his latest patents is an image forming method of negative latent images using silica particles. This innovative method involves forming a negative latent image on a photosensitive member that comprises an organic photoconductive material. The negative latent image is developed using a positively chargeable developer containing fine silica particles, which are specifically adapted to the organic photosensitive member. This process allows for the successful transfer of copied images without fog. Another notable patent is for a particulate developer containing inorganic scraper particles. This developer consists of colored resinous particles and inorganic fine particles that promote the removal of paper powder and other adherents during the cleaning of the latent image-bearing member. This technology ensures that high-quality images can be produced even after prolonged use.

Career Highlights

Kazunori Murakawa is currently employed at Canon Kabushiki Kaisha, a leading company in imaging and printing technologies. His work at Canon has allowed him to push the boundaries of innovation in the field, contributing to the development of advanced imaging solutions.

Collaborations

Throughout his career, Murakawa has collaborated with notable colleagues, including Yasuo Mitsuhashi and Masaki Uchiyama. These collaborations have fostered a creative environment that has led to the development of groundbreaking technologies in image forming.

Conclusion

Kazunori Murakawa's contributions to image forming technologies have significantly impacted the industry. His innovative patents and collaborative efforts continue to drive advancements in this field.

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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