% Expired Patents = 60.0

Forward Citations = 15

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3 inventors (with patents filed for the assignee):

Takao Utsumi (4 out of 5 patents)

Nobuo Shimazu (3 out of 10 patents)

Akira Higuchi (1 out of 1 patent)

5 patents: Sort by Forward Citations

1. 6894295 - Electron beam proximity exposure apparatus and mask unit therefor (2005-05-17),

2. 6727507 - Electron beam proximity exposure apparatus and method (2004-04-27),

3. 6717157 - Mask inspecting apparatus (2004-04-06),

4. 6703623 - Electron beam proximity exposure apparatus (2004-03-09),

5. 6624430 - Method of measuring and calibrating inclination of electron beam in electron beam proximity exposure apparatus, and electron beam proximity exposure apparatus (2003-09-23),

Leepl Corporation is a technology company specializing in software development and IT solutions. With a focus on innovation and customer satisfaction, Leepl provides cutting-edge solutions for businesses of all sizes. From custom software development to cloud services, Leepl Corporation is dedicated to helping clients achieve their goals.

Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Oct 6 2026

5 Patents

#1 in Machida

#6,651 in Japan

Machida, Japan

Leepl Corporation

Forward Citations = 15

3 inventors:

Takao Utsumi (4 out of 5 patents)

Nobuo Shimazu (3 out of 10 patents)

Akira Higuchi (1 out of 1 patent)

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