Hachioji, Japan

Wataru Ishikawa

This inventor holds 25 USPTO granted patents and 2 published patent applications and 2 EPO patents, primarily in Inkjet Technology. Top assignees: Konishiroku Photo Industry Co., Ltd., Konica Corporation, Konica Minolta Medical and Graphic, Inc.. Active years: 1979-2014.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Wataru Ishikawa. Retrieved from https://idiyas.com/inventor/wataru-ishikawa

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

Calculating rank
USPTO Granted Patents = 25 

% Patents Active = 92.0

 

Average Co-Inventor Count = 2.0

ph-index = 8

Forward Citations = 194(Granted Patents)


Location History:

  • Hino, JP (1981 - 2006)
  • Hachioji, JP (1979 - 2011)
  • Tokyo, JP (1989 - 2014)

Company Filing History:


Years Active: 1979-2014

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Areas of Expertise:
Organic Electroluminescence Device
Ink-Jet Head
Ink-Jet Printer
Photo-Curable Ink
Image Forming Method
Silver Halide Photographic Material
Heat-Transfer Image
Dye Image Formation
Actinic Ray Curable Composition
Ink-Jet Recording Apparatus
Image Recording Device
Photosensitive Compound
25 patents (USPTO):Explore Patents

Title: The Innovative Contributions of Wataru Ishikawa

Introduction

Wataru Ishikawa, a prominent inventor based in Hachioji, Japan, is recognized for his significant contributions to the field of organic electroluminescence and inkjet printing technologies. With a remarkable portfolio of 25 patents, Ishikawa has developed pioneering methods that enhance production processes and product quality in various applications.

Latest Patents

Ishikawa's latest patent innovations include an organic electroluminescence device and a new production method for it. This device, which can be reliably produced through a wet process, showcases improved external quantum efficiency while minimizing coating unevenness. The production method involves forming a liquid layer by coating a solution of organic material, followed by a precise air-blowing technique to efficiently remove the solvent.

Another notable patent is related to an inkjet recording method, where an image is created on a recording medium using an ink that contains a photopolymerizable compound. This method is distinguished by its capability to suppress the formation of precipitates in the inkjet head, ultimately resulting in stable image recording and enhanced print quality.

Career Highlights

Wataru Ishikawa has worked with notable companies such as Konishiroku Photo Industry Co., Ltd. and Konica Corporation. His experiences in these institutions have contributed to his expertise in developing advanced imaging technologies and innovative production methods.

Collaborations

Throughout his career, Ishikawa has collaborated with several distinguished professionals, including Toyoaki Masukawa and Kiyoshi Yamashita. These collaborations have fostered a creative environment conducive to innovation and technological advancement.

Conclusion

Wataru Ishikawa's contributions to the fields of organic electroluminescence and inkjet printing are a testament to his inventive spirit and dedication to excellence. With 25 patents to his name, he continues to influence the industry with innovative solutions that enhance production methodologies and product performance.

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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