Tokyo, Japan

Katsuhiko Murayama

This inventor holds 22 USPTO granted patents and 2 published patent applications and 10 EPO patents, primarily in Wafer Manufacturing. Top assignees: Max Co., Ltd., Sumco Corporation. Active years: 2004-2014.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Katsuhiko Murayama. Retrieved from https://idiyas.com/inventor/katsuhiko-murayama

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

USPTO Granted Patents = 22 

% Patents Active = 31.8

 

Average Co-Inventor Count = 3.7

ph-index = 8

Forward Citations = 128(Granted Patents)


Location History:

  • Chuo-ku, JP (2013)
  • Tokyo, JP (2004 - 2014)

Company Filing History:


Years Active: 2004-2014

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Areas of Expertise:
Epitaxial Wafer
Wafer Etching
Gas Combustion Tool
Silicon Wafer
Wafer Polishing
Single Wafer Process
Gas Cartridge
Wafer Surface Smoothing
Etching Liquid
Powered Nailing Machine
Compressed Air Output
Driving Tool
22 patents (USPTO):Explore Patents

Title: Innovations and Contributions of Katsuhiko Murayama in the Field of Epitaxial Wafer Manufacturing and Driving Tools

Introduction: Katsuhiko Murayama, based in Tokyo, Japan, is an accomplished inventor known for his significant contributions to the fields of semiconductor manufacturing and tools. With a total of 22 patents to his name, he has developed innovative technologies that enhance production efficiency and product quality.

Latest Patents: Among his latest inventions is a **Method for Manufacturing Epitaxial Wafer**. This method focuses on reducing surface defects or slips in the epitaxial layer, incorporating a smoothing step that controls etchant application based on the silicon wafer's surface shape. Additionally, Murayama has patented a **Gas Combustion Type Driving Tool**, which features a feed piston/cylinder mechanism that facilitates the movement of a feed piston in a fastener feed direction. The design includes a unique combustion gas supply system that operates efficiently by utilizing filters for gas cooling, showcasing his ingenuity in tool design.

Career Highlights: Throughout his career, Katsuhiko Murayama has worked with notable companies including Max Co., Ltd. and Sumco Corporation. His experiences at these organizations have contributed immensely to his expertise and the innovative solutions he has brought to the industry.

Collaborations: Murayama has collaborated with other professionals in his field, including Sakae Koyata and Tomohiro Hashii. These partnerships have enabled him to further explore and develop cutting-edge technologies in semiconductor manufacturing.

Conclusion: Katsuhiko Murayama's work in patenting innovative methods and tools has had a lasting impact on the semiconductor industry. His dedication to improving manufacturing processes through his patented inventions underscores the importance of innovation in technological advancement. With an impressive portfolio of 22 patents, Murayama continues to influence the engineering landscape in Japan and beyond.

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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