Natsuro Tsubouchi

This inventor holds 12 USPTO granted patents. Top assignees: Mitsubishi Denki Kabushiki Kaisha, Mitsubishi Denki K.k.. Active years: 1979-1989.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Natsuro Tsubouchi. Retrieved from https://idiyas.com/inventor/natsuro-tsubouchi

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

USPTO Granted Patents = 12

% Patents Active = 100.0

Average Co-Inventor Count = 2.8

ph-index = 7

Forward Citations = 140(Granted Patents)

Location History:

Kawanishi, JP (1982 - 1985)
Itami, JP (1979 - 1989)
Hyogo, JP (1985 - 1989)

Company Filing History:

11 out of 21,351

Mitsubishi Denki Kabushiki Kaisha

patents

1 out of 488

Mitsubishi Denki K.k.

patents

Years Active: 1979-1989

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12 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 4859033 - Method of producing optical head assembly (1989-08-22),

2. 4853348 - Process for manufacture of a semiconductor memory device (1989-08-01),

3. 4809048 - Charge-coupled device having channel region with alternately changing (1989-02-28),

4. 4779259 - Optical head assembly with efficient light source coupling surface and (1988-10-18),

5. 4763179 - Semiconductor memory device (1988-08-09),

6. 4589189 - Method for producing a Schottky barrier light detecting device (1986-05-20),

7. 4535530 - Process for manufacturing a semiconductor memory device (1985-08-20),

8. 4524374 - Device for detecting infrared rays (1985-06-18),

9. 4496964 - MOSFET Light detecting device having a Schottky junction (1985-01-29),

10. 4381595 - Process for preparing multilayer interconnection (1983-05-03),

11. 4333226 - Method of forming patterned refractory metal films by selective oxygen (1982-06-08),

12. 4154192 - Manufacturing apparatus for semiconductor devices (1979-05-15),

Title: Natsuro Tsubouchi: Innovator in Optical and Semiconductor Technologies

Introduction

Natsuro Tsubouchi is a prominent inventor based in Itami, Japan. He has made significant contributions to the fields of optical and semiconductor technologies, holding a total of 12 patents. His innovative work has paved the way for advancements in optical disc technology and semiconductor memory devices.

Latest Patents

One of Tsubouchi's latest patents is a method of producing an optical head assembly. This invention involves an optical IC-type head assembly designed for recording and reading information on optical discs. The assembly includes a substrate, a light guiding layer, a laser oscillator, a grating coupler, and a photo detector. The substrate is made of a material with cleavability, allowing for efficient light guiding and detection. Another notable patent is for the process of manufacturing a semiconductor memory device, specifically a MOS dynamic RAM. This device features transistor portions for signal writing and reading, along with capacitor portions designed to maximize capacitance through innovative structural design.

Career Highlights

Throughout his career, Natsuro Tsubouchi has worked with notable companies, including Mitsubishi Electric Corporation. His experience in these organizations has contributed to his expertise in developing cutting-edge technologies in the optical and semiconductor sectors.

Collaborations

Tsubouchi has collaborated with several professionals in his field, including Masahiko Denda and Masafumi Kimata. These collaborations have further enhanced his innovative capabilities and contributed to the success of his projects.

Conclusion

Natsuro Tsubouchi's contributions to optical and semiconductor technologies demonstrate his significant impact as an inventor. His patents reflect a commitment to innovation and excellence in engineering.

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]