logo

For the Inventor, By the Inventor

Kyotanabe, Japan

Keizaburo Kuramasu

This inventor holds 12 USPTO granted patents. Top assignee: Matsushita Electric Industrial Co., Ltd.. Active years: 1979-2005.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Keizaburo Kuramasu. Retrieved from https://idiyas.com/inventor/keizaburo-kuramasu

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 = 83.3

Average Co-Inventor Count = 3.2

ph-index = 10

Forward Citations = 315(Granted Patents)


Location History:

  • Katano, JP (1979)
  • Tsuzuki, JP (1995)
  • Tsuzuki-gun, JP (1997 - 1998)
  • Kyotanabe, JP (2001 - 2005)

Company Filing History:

goldMedal12 out of 27,375 
 
Matsushita Electric Industrial Co., Ltd.
 patents

Years Active: 1979-2005

Loading Chart...
12 patents (USPTO):Explore Patents
1. 6961111 - Display device and method of producing same (2005-11-01),
2. 6812490 - Thin-film transistor, panel, and methods for producing them (2004-11-02),
3. 6806498 - Semiconductor thin film, method and apparatus for producing the same, and semiconductor device and method of producing the same (2004-10-19),
4. 6624473 - Thin-film transistor, panel, and methods for producing them (2003-09-23),
5. 6534353 - Method of fabricating a thin-film transistor (2003-03-18),
6. 6528397 - Semiconductor thin film, method of producing the same, apparatus for producing the same, semiconductor device and method of producing the same (2003-03-04),
7. 6506669 - Method of fabricating a thin film transistor (2003-01-14),
8. 6331476 - Thin film transistor and producing method thereof (2001-12-18),
9. 5844347 - Saw device and its manufacturing method (1998-12-01),
10. 5662818 - Method of producing a pyroelectric infrared radiation detector (1997-09-02),
11. 5471060 - Pyroelectric infrared radiation detector and method of producing the same (1995-11-28),
12. 4168343 - Thermal printing head (1979-09-18),

Title: Keizaburo Kuramasu: Innovator in Display Technology

Introduction

Keizaburo Kuramasu is a distinguished inventor based in Kyotanabe, Japan, holding a remarkable portfolio of 12 patents. His innovations primarily focus on display technology, showcasing his expertise in developing advanced liquid crystal display (LCD) systems and related components.

Latest Patents

Among his latest inventions are a display device and method of producing the same, which features a driver circuit-integrated type active matrix substrate. This innovative design includes a liquid crystal display unit formed on a glass substrate, featuring a matrix array of thin film transistors alongside driver circuits to control the display. By incorporating recessed grooves in the peripheral portion of the glass substrate, this design effectively buries power supply lines, which reduces resistance and ensures stable operation of the driver circuits.

Another vital patent relates to thin-film transistor technology. This invention provides an LDD (Lightly Doped Drain) type TFT with outstanding characteristics for liquid crystal displays. By employing a top gate type LDD TFT architecture with a two-stage structure, the design enhances performance while also utilizing unique shape modifications to improve impurity injection. This innovation further optimizes TFT performance by preventing hydrogen dilution within the manufacturing process.

Career Highlights

Keizaburo Kuramasu is associated with Matsushita Electric Industrial Co., Ltd., a leading name in the electronics industry. His contributions have significantly advanced the field of display technology, helping to enhance visual experiences in various electronic devices.

Collaborations

Throughout his career, Kuramasu has worked alongside notable colleagues, including Tetsuo Kawakita and Yoshinao Taketomi. Their collaborative efforts have led to numerous advancements in display solutions, integrating innovative ideas and expertise to push boundaries in technology.

Conclusion

Keizaburo Kuramasu exemplifies the spirit of innovation in display technology through his significant patents and contributions at Matsushita Electric Industrial Co., Ltd. His work continues to inspire progress in the electronics field, ensuring that display technologies evolve to meet the demands of modern users.

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]
Loading…