Nara, Japan

Koji Katayama

This inventor holds 45 USPTO granted patents and 4 published patent applications and 1 EPO patent, primarily in Gas Detection Technology. Top assignees: Panasonic Corporation, Panasonic Intellectual Property Management Co., Ltd., Nuvoton Technology Corporation Japan. Active years: 2002-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Koji Katayama. Retrieved from https://idiyas.com/inventor/koji-katayama-u9ba57yb

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

USPTO Granted Patents = 45 

% Patents Active = 86.7


Average Co-Inventor Count = 3.8

ph-index = 10

Forward Citations = 289(Granted Patents)


Company Filing History:


Years Active: 2002-2026

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Areas of Expertise:
Hydrogen Sensor
Gas Detection Device
Fuel Cell Vehicle
Nonvolatile Memory Device
Variable Resistance Element
Gas Sensor System
Manufacturing Method
Memory Element
45 patents (USPTO):Explore Patents

Title: The Innovative Mind of Koji Katayama

Introduction

Koji Katayama, an esteemed inventor hailing from Nara, Japan, has made significant contributions to the field of technology with a remarkable portfolio of 42 patents. His relentless pursuit of innovation is evident in his latest developments, which showcase his expertise in gas sensors and nonvolatile storage devices.

Latest Patents

Among his most recent patents, the gas sensor invention stands out. This device features a gas detecting element composed of a first electrode, a metal oxide layer, and a second electrode, enclosed within an insulating film. The unique design allows the resistance of the metal oxide layer to vary based on contact with hydrogen gas molecules. Furthermore, a notable first step within the device enhances functionality at the interface between the metal oxide and second electrode.

Another notable patent is the variable resistance nonvolatile storage device, which includes a variable resistance element that can switch between high and low resistance states. The ingenious current supply circuit delivers a changing current to facilitate this state transition, significantly optimizing memory storage technology.

Career Highlights

Throughout his career, Koji Katayama has been associated with prominent companies such as Panasonic Corporation and Panasonic Intellectual Property Management Co., Ltd. His work at these organizations has helped propel advancements in various technological domains, underlining his status as a leading inventor.

Collaborations

Koji has collaborated with notable colleagues including Takeshi Takagi and Shunsaku Muraoka. Their shared expertise and innovative pursuits have undoubtedly played a role in the successful development of pioneering technologies and patents.

Conclusion

Koji Katayama is a remarkable inventor whose contributions have greatly impacted the fields of gas sensing and memory storage. With an impressive array of patents and a strong background in renowned companies, his legacy continues to inspire future innovations in 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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