Sapporo, Japan

Keiji Kunimatsu

This inventor holds 4 USPTO granted patents. Top assignees: Imra Japan Kabushikikaisha, Kabushikikaisha Equos Research, Other. Active years: 2000-2008.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Keiji Kunimatsu. Retrieved from https://idiyas.com/inventor/keiji-kunimatsu

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


% Patents Active = 100.0

Average Co-Inventor Count = 2.9

ph-index = 3

Forward Citations = 42(Granted Patents)


Location History:

  • Hokkaido, JP (2000 - 2002)
  • Sappro, JP (2008)

Company Filing History:


Years Active: 2000-2008

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4 patents (USPTO):Explore Patents

Title: Inventor Profile: Keiji Kunimatsu

Introduction

Keiji Kunimatsu is an innovative inventor based in Sapporo, Japan, known for his work in the field of nanotechnology and gas sensing systems. With a total of four patents to his name, Kunimatsu has made significant contributions that enhance both scientific understanding and practical applications in various industries.

Latest Patents

One of his key inventions is a **Processing Method for Nano-size Substance**. This patent outlines a technique where an active portion of a nano-size element is selectively destroyed by applying an electric potential to a carbon-based nano-structure while it is immersed in an electrolytic solution. For instance, by applying an electric potential ranging from 1.20 to 1.60 V (RHE) to carbon nanotubes in an electrolytic solution, Kunimatsu successfully oxidizes the active portions in each nanotube, leading to the selective removal of the ends and the creation of open ends in the carbon nanotubes.

Another significant patent is the **CO Gas Sensor and Method of Using Same**. This invention features a detecting unit where a solid electrolyte membrane is placed between a detection electrode and a counter electrode. The apparatus includes a voltage applying unit that varies the voltage between these electrodes. The detection electrode consists of an electrochemically active first catalyst embedded in a porous body, while the counter electrode contains a second catalyst also carried on an electrically conductive porous body. These innovations contribute to the detection of carbon monoxide gas with improved accuracy and efficiency.

Career Highlights

Throughout his career, Keiji Kunimatsu has worked with notable companies, including Imra Japan and Equos Research. His experience in these organizations has contributed to the development and commercialization of advanced technologies in nanotechnology and environmental sensing.

Collaborations

Kunimatsu has collaborated with esteemed professionals like Hidemi Akita and Toshihide Nakata, enhancing the breadth of knowledge sharing and innovation in his projects. These collaborations have enabled the integration of diverse expertise in the development of his patents.

Conclusion

Keiji Kunimatsu stands out as a prominent inventor in the realms of nanotechnology and gas sensing. With four patents reflecting his innovative spirit and technical expertise, he continues to contribute valuable advancements that may profoundly impact future technological developments. His work not only paves the way for new inventions but also exemplifies the importance of collaboration in fostering innovation.

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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