% Expired Patents = 100.0

Forward Citations = 45

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2 inventors (with patents filed for the assignee):

Takaaki Maekawa (1 out of 16 patents)

Keo Intabon (1 out of 1 patent)

1 patent: Sort by Forward Citations

1. 6490824 - Method for culturing a basidiomycetous fungus in a liquid culture medium (2002-12-10),

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USPTO Data Jan 1 1976 - Oct 13 2026

1 Patents

#114 in Ibaraki

#15,758 in Japan

Ibaraki, Japan

Tsukuba Biosystems, Ltd.

Forward Citations = 45

2 inventors:

Takaaki Maekawa (1 out of 16 patents)

Keo Intabon (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Tsukuba Biosystems, Ltd.. Retrieved from https://idiyas.com/company/tsukuba-biosystems

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]