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For the Inventor, By the Inventor

Kanagawa, Japan

Katsuhiko Kudo

This inventor holds 5 USPTO granted patents. Top assignee: Tokyo Ohka Kogyo Co., Ltd.. Active years: 1990-1996.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Katsuhiko Kudo. Retrieved from https://idiyas.com/inventor/katsuhiko-kudo

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

USPTO Granted Patents = 5

% Patents Active = 100.0

Average Co-Inventor Count = 3.7

ph-index = 5

Forward Citations = 199(Granted Patents)


Company Filing History:

goldMedal5 out of 1,236 
 
Tokyo Ohka Kogyo Co., Ltd.
 patents

Years Active: 1990-1996

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5 patents (USPTO):Explore Patents
1. 5571324 - Rotary-cup coating apparatus (1996-11-05),
2. 5349978 - Cleaning device for cleaning planar workpiece (1994-09-27),
3. 5238713 - Spin-on method and apparatus for applying coating material to a (1993-08-24),
4. 5116250 - Method and apparatus for applying a coating material to a substrate (1992-05-26),
5. 4941426 - Thin-film coating apparatus (1990-07-17),

Title: Innovations by Katsuhiko Kudo

Introduction

Katsuhiko Kudo is a prominent inventor based in Kanagawa, Japan. He has made significant contributions to the field of technology, particularly in the development of advanced apparatuses for handling planar workpieces. With a total of 5 patents to his name, Kudo's work has had a notable impact on the industry.

Latest Patents

One of Kudo's latest inventions is the Rotary-cup coating apparatus. This device operates by actuating a cylinder unit to extend its rod upwardly, allowing a chuck to lift above an inner cup to receive a planar workpiece, such as a semiconductor wafer or a glass substrate. The chuck is disengaged from the inner cup, and a stopper locks it against rotation. Once the workpiece is supported on the chuck, the cylinder unit retracts its rod, bringing the chuck into a lowered position where it engages with the inner cup for corotation. The motor energizes to rotate the inner cup, which in turn rotates the chuck, minimizing the risk of damage to the interengaging portions due to the large rotational inertia of the inner cup.

Another notable invention is a cleaning device designed for cleaning planar workpieces. This device features a pair of diametrically opposite nozzles that apply a cleaning solution to the reverse side of a workpiece. The rotatable chuck, holding the workpiece, is rotated by a reversible motor in alternating directions. This allows the cleaning solution to be ejected from one nozzle while the chuck rotates in one direction, and from the other nozzle while rotating in the opposite direction. The nozzles are symmetrically aligned with respect to the center of the rotatable chuck, ensuring effective cleaning.

Career Highlights

Katsuhiko Kudo has built a successful career at Tokyo Ohka Kogyo Co., Ltd., where he has been instrumental in developing innovative technologies. His expertise in creating advanced apparatuses has positioned him as a key figure in the company.

Collaborations

Throughout his career, Kudo has collaborated with talented individuals such as Hiroyoshi Sago and Hideyuki Mizuki. These collaborations have further enhanced the quality and impact of his inventions.

Conclusion

Katsuhiko Kudo's contributions to technology through his innovative patents demonstrate his expertise and commitment to advancing the field. His

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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