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For the Inventor, By the Inventor

Kawasaki, Japan

Hiroyuki Ichikawa

This inventor holds 50 USPTO granted patents, primarily in Image Processing (CPC class 3585). Top assignees: Canon Kabushiki Kaisha, Sony Corporation, Toshiba Ceramics Co., Ltd.. Active years: 1989-2009.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroyuki Ichikawa. Retrieved from https://idiyas.com/inventor/hiroyuki-ichikawa-cs2ddnk0

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

USPTO Granted Patents = 50

% Patents Active = 96.0

Average Co-Inventor Count = 4.0

ph-index = 17

Forward Citations = 786(Granted Patents)

Forward Citations (Not Self Cited) = 758(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Kanagawa, JP (1991 - 2001)
  • Kawasaki, JP (1989 - 2002)
  • Tokyo, JP (1990 - 2009)

Company Filing History:

goldMedal47 out of 93,085 
 
Canon Kabushiki Kaisha
 patents
silverMedal2 out of 58,147 
 
Sony Corporation
 patents
bronzeMedal1 out of 189 
 
Toshiba Ceramics Co., Ltd.
 patents

Years Active: 1989-2009

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Areas of Expertise:
Image Processing
Electrophotographic
Color Conversion
Pattern Generation
Image Data
Feature Detection
Multicolor Images
Density Regulation
Outline Extraction
Half-Tone Image
Mosaic Processing
Color Image Editing
50 patents (USPTO):Explore Patents
1. 7587406 - Information processor, information processing method, program and recording medium (2009-09-08),
2. 7549176 - Recording medium, information playback apparatus and method, and information recording and playback apparatus (2009-06-16),
3. 6473204 - Image processing apparatus capable of selecting a non-rectangular area (2002-10-29),
4. 6462834 - Image processing system which forms two-color images (2002-10-08),
5. 6210458 - Gas filter module having two-part filter and method of producing the same (2001-04-03),
6. 6134023 - Image forming apparatus which outputs a color image by separating color (2000-10-17),
7. 5940192 - Image processing apparatus (1999-08-17),
8. 5848320 - Copying apparatus capable of handling original having protruding portion (1998-12-08),
9. 5805738 - Image processing apparatus and method (1998-09-08),
10. 5777759 - Image processing method and apparatus (1998-07-07),
11. 5774234 - Image data processing apparatus (1998-06-30),
12. 5760930 - Electrophotographic image forming apparatus with density regulating (1998-06-02),
13. 5760929 - Image processing apparatus for processing discriminated color regions (1998-06-02),
14. 5748773 - Image processing apparatus (1998-05-05),
15. 5734484 - Image processing apparatus for receiving multicolor image information (1998-03-31),

Title: Hiroyuki Ichikawa: Innovator in Information Processing

Introduction

Hiroyuki Ichikawa, a notable inventor based in Kawasaki, Japan, has significantly contributed to the field of information technology. With an impressive portfolio of 50 patents, Ichikawa has developed innovative solutions that enhance data processing and content management.

Latest Patents

Among his latest inventions is an advanced information processor that prevents data loss during file format transformations. This technology features an extension unit for expanding data storage and utilizes a format analyzer to reconstruct and preserve essential information. Another significant patent focuses on an information playback apparatus that interfaces with CDs, allowing audio information to be securely encoded and stored along with its usage rights, thus regulating how the audio can be accessed and utilized.

Career Highlights

Ichikawa has had an illustrious career, working with renowned companies like Canon and Sony Corporation. His tenure at these institutions has enabled him to leverage cutting-edge technology and collaborate with leading experts in the field.

Collaborations

Throughout his career, Ichikawa has collaborated with skilled coworkers such as Yoshinori Ikeda and Mitsuru Kurita. These partnerships have facilitated the fusion of ideas and expertise, which has been pivotal in driving forward the innovations he is known for today.

Conclusion

Hiroyuki Ichikawa's contributions to information processing technology showcase his dedication and ingenuity as an inventor. His extensive patent portfolio reflects a commitment to developing practical solutions that address modern data challenges, securing his legacy in the innovation landscape.

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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