Tokyo, Japan

Tsutomu Matsui

This inventor holds 36 USPTO granted patents and 4 EPO patents, primarily in Battery Technology. Top assignees: Nec Corporation, Kabushiki Kaisha Toshiba. Active years: 1995-2021.


% Patents Active = 100.0

 

Average Co-Inventor Count = 1.4

ph-index = 7

Forward Citations = 140(Granted Patents)


Location History:

  • Tokyo, JP (1995 - 2001)
  • Nagano-ken, JP (2014)
  • Saku, JP (2013 - 2019)
  • Kashiwazaki, JP (2017 - 2021)

Company Filing History:


Years Active: 1995-2021

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Areas of Expertise:
Wound Electrode
Insulating Covers
Branched Current Collector
Optical Disk
Astigmatic Correction
Optical Head
Tracking Signal Detection
Optical Sensors
Lens Actuator
Phase Change
Rewritable Disk
Optical Recording
36 patents (USPTO):Explore Patents

Title: The Innovative Mind of Tsutomu Matsui

Introduction: Tsutomu Matsui, based in Tokyo, Japan, is a prominent inventor with an impressive portfolio of 26 patents. His contributions to the field of optical disk technology reflect a deep understanding of intricate engineering and innovation.

Latest Patents: Among his latest inventions, Matsui developed a "Phase Change Optical Disk Initializing Apparatus." This apparatus utilizes a laser light source to emit an erasing laser for initializing optical disks. It includes a laser drive circuit that operates according to an AC waveform signal, along with an optical system that irradiates the disk. The device is designed to ensure precise adjustments, allowing for the formation of an amorphous portion within a melting re-crystallization area, enhancing the effectiveness of the initialization process. Another significant invention is the "Method for Erasing Rewritable Optical Disk Using Two Laser Beams." This apparatus effectively uses dual laser beams emitted from a single erasing head, allowing for efficient data erasure on optical disks. The invention not only showcases Matsui's advanced knowledge but also emphasizes innovative methods to enhance optical disk functionality.

Career Highlights: Tsutomu Matsui has made remarkable strides in his career, primarily through his work at NEC Corporation. His expertise in optical media technology has positioned him as a leader in his field, earning him recognition and respect within the industry.

Collaborations: Throughout his career, Matsui has worked alongside notable colleagues such as Yuki Fujimura and Shigeru Araki. Their collaborative efforts have further advanced the technology surrounding optical disks, and their combined knowledge has contributed to the successful development of various patents.

Conclusion: Tsutomu Matsui's contributions to optical disk technology are vital to the evolution of data storage. His innovative spirit and collaborative nature continue to inspire future generations of inventors. As technology progresses, Matsui's work will undoubtedly influence the landscape of optical media for years to come.

Profile summary based on public USPTO records.
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