Katano, Japan

Eiji Yamauchi

This inventor holds 8 USPTO granted patents. Top assignees: Matsushita Electric Industrial Co., Ltd., Canon Kabushiki Kaisha. Active years: 1991-2005.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Eiji Yamauchi. Retrieved from https://idiyas.com/inventor/eiji-yamauchi

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


% Patents Active = 87.5

Average Co-Inventor Count = 3.7

ph-index = 5

Forward Citations = 66(Granted Patents)


Location History:

  • Neyagawa, JP (1991 - 1993)
  • Katano, JP (1992 - 1999)
  • Hirakata, JP (2005)

Company Filing History:


Years Active: 1991-2005

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8 patents (USPTO):Explore Patents

Title: Eiji Yamauchi: Innovator in Information Recording Technologies

Introduction

Eiji Yamauchi is a notable inventor based in Katano, Japan. He has made significant contributions to the field of information recording technologies, holding a total of 8 patents. His work has influenced various industries, particularly in the development of advanced recording apparatuses.

Latest Patents

Yamauchi's latest patents include an information recording apparatus and a method for recording information on a recording medium. This invention involves controlling the operation of a recording/reproducing portion to record data in a predetermined recording region. It also allows for update recording based on the occurrence of update information. The control portion manages the recording/reproducing portion to store an update portion of data in a temporary storage region and sets an update flag to indicate whether the predetermined recording region has been updated.

Another significant patent is for an apparatus that produces a video signal in synchronism with an external source. This encoder generates an analogue color signal using a digital circuit. It counts an external frame signal with a clock pulse generated by a crystal oscillator, producing a synchronizing signal for the luminance signal. This innovation ensures that all horizontal synchronizing periods of digital active lines are identical, enhancing the quality of video signals.

Career Highlights

Throughout his career, Eiji Yamauchi has worked with prominent companies such as Matsushita Electric Industrial Co., Ltd. and Canon Inc. His experience in these organizations has allowed him to develop and refine his innovative ideas, contributing to the advancement of technology in the recording industry.

Collaborations

Yamauchi has collaborated with notable colleagues, including Hiroshi Tanaka and Tetsuo Ishiwata. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies.

Conclusion

Eiji Yamauchi's contributions to information recording technologies have made a lasting impact on the industry. His innovative patents and collaborations with esteemed colleagues highlight his role as a leading inventor in this field.

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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