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For the Inventor, By the Inventor

Kawasaki, Japan

Hironori Yahagi

This inventor holds 10 USPTO granted patents and 2 EPO patents. Top assignees: Fujitsu Corporation, Other. Active years: 1988-2012.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hironori Yahagi. Retrieved from https://idiyas.com/inventor/hironori-yahagi

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

USPTO Granted Patents = 10

% Patents Active = 70.0


Average Co-Inventor Count = 2.3

ph-index = 8

Forward Citations = 352(Granted Patents)


Location History:

  • Yokohama, JP (1988)
  • Atsugi-shi, Kanagawa JP (1992)
  • Kanagawa, JP (2003)
  • Kawasaki, JP (1997 - 2012)

Company Filing History:

goldMedal9 out of 39,374 
 
Fujitsu Corporation
 patents
silverMedal1 out of 834,513 
Other
 patents

Years Active: 1988-2012

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10 patents (USPTO):Explore Patents
1. 8311107 - Image data compression device, compressing method, image data decompression device, decompressing method, and recording medium (2012-11-13),
2. 8045814 - Image compression device, compressing method, storage medium, image decompression device, decompressing method, and storage medium (2011-10-25),
3. 7519903 - Converting a structured document using a hash value, and generating a new text element for a tree structure (2009-04-14),
4. 6871320 - Data compressing apparatus, reconstructing apparatus, and method for separating tag information from a character train stream of a structured document and performing a coding and reconstruction (2005-03-22),
5. 6507678 - Apparatus and method for retrieving character string based on classification of character (2003-01-14),
6. 6094634 - Data compressing apparatus, data decompressing apparatus, data (2000-07-25),
7. 5801648 - Data compressing method, data compressing apparatus, data decompressing (1998-09-01),
8. 5673042 - Method of and an apparatus for compressing/decompressing data (1997-09-30),
9. 5109428 - Minutia data extraction in fingerprint identification (1992-04-28),
10. 4728186 - Uneven-surface data detection apparatus (1988-03-01),

Title: Hironori Yahagi: Innovator in Image Data Compression

Introduction

Hironori Yahagi is a prominent inventor based in Kawasaki, Japan. He has made significant contributions to the field of image data compression, holding a total of 10 patents. His innovative work has advanced the technology used in image processing and compression methods.

Latest Patents

Yahagi's latest patents include an image data compression device, a compressing method, an image data decompression device, and a decompressing method. One of his notable inventions involves a quantizer that quantizes a 'prediction error' as a difference value between a pixel to be compressed and a prediction value. This device utilizes a variable-length encoder to output a compressed code based on quantization numbers. Additionally, his work includes a prediction value candidate calculation module that determines the best prediction value based on surrounding pixels, enhancing the efficiency of image compression.

Career Highlights

Throughout his career, Hironori Yahagi has worked with notable companies, including Fujitsu Corporation. His expertise in image data compression has positioned him as a key figure in the industry, contributing to advancements that benefit various applications in technology.

Collaborations

Yahagi has collaborated with several professionals in his field, including Shigeru Yoshida and Seigo Igaki. These collaborations have fostered innovation and development in image processing technologies.

Conclusion

Hironori Yahagi's contributions to image data compression have made a lasting impact on the field. His innovative patents and collaborations highlight his role as a leading inventor in this technology.

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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