% Expired Patents = 100.0

EPO Patents = 2

Forward Citations = 12

Loading Chart...

4 inventors (with patents filed for the assignee):

Hiroyuki Shiomi (2 out of 6 patents)

Eiichiro Misaki (2 out of 3 patents)

Maoya Adachi (2 out of 2 patents)

4. Takahiro Kaida (2 out of 2 patents)

5. Takahiro c/o Nihon Koken Kogyo Kk Kaida (0 patent)

6. Maoya c/o Nihon Koken Kogyo Kk Adachi (0 patent)

2 patents: Sort by Forward Citations

1. 8153163 - Pearlescent pigment (2012-04-10),

2. 8016934 - Pearlescent pigment (2011-09-13),

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

2 Patents

#2 in Tachikawa

#11,139 in Japan

Tachikawa, Japan

Nihon Koken Kogyo Kk

Forward Citations = 12

4 inventors:

Hiroyuki Shiomi (2 out of 6 patents)

Eiichiro Misaki (2 out of 3 patents)

Maoya Adachi (2 out of 2 patents)

4. Takahiro Kaida (2 out of 2 patents)

5. Takahiro c/o Nihon Koken Kogyo Kk Kaida (0 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Nihon Koken Kogyo Kk. Retrieved from https://idiyas.com/company/nihon-koken-kogyo-kk

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

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]

2 patents (EPO):

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]