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Trademarks = 6

Forward Citations = 38

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6 inventors (with patents filed for the assignee):

Kihachiro Okura (4 out of 4 patents)

Kihachiro Ohkura (2 out of 2 patents)

Kazuo Nakatani (1 out of 17 patents)

4. Kunihiko Fujii (1 out of 3 patents)

5. Shigeo Mukai (1 out of 1 patent)

6. Koji Ueda (1 out of 1 patent)

7 patents: Sort by Forward Citations

1. 11204345 - Preparative method and apparatus for a thin-layer chromatograph (2021-12-21),

2. 11002714 - Liquid chromatograph, device and method for calculating elution time, and device and method for determining mixture ratio (2021-05-11),

3. 10648954 - Liquid chromatograph method, information provision method, and liquid chromatographic auxiliary apparatus (2020-05-12),

4. 10416135 - Preparative liquid chromatographic apparatus (2019-09-17),

5. 7169308 - Liquid chromatograph control apparatus, method for performing liquid chromatography and computer program for controlling a liquid chromatograph (2007-01-30),

6. 6415670 - Injection apparatus (2002-07-09),

7. 6241108 - Modular shelving unit (2001-06-05),

Yamazen Corporation is a Japanese trading company specializing in industrial machinery, equipment, and tools. With a focus on precision, efficiency, and quality, Yamazen provides solutions for a wide range of industries including automotive, aerospace, electronics, and medical. Established in 1967, the company has a global presence with offices in Japan, North America, Europe, and Asia, serving customers around the world with top-notch products and services.

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Company Badge

USPTO Data Jan 1 1976 - Dec 2 2025

7 Patents

#518 in Osaka

#5,300 in Japan

Osaka, Japan

Yamazen Corporation