% Expired Patents = 50.0

CIPO Patents = 1

EPO Patents = 1

Forward Citations = 3

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6 inventors (with patents filed for the assignee):

Hitoshi Endou (6 out of 25 patents)

Yoshikatsu Kanai (5 out of 15 patents)

Atsushi Enomoto (3 out of 8 patents)

4. Richard J Johnson (1 out of 3 patents)

5. Toshihiro Oikawa (1 out of 11 patents)

6. Karen L Price (1 out of 1 patent)

7. Yoshikatsu Kanai (7 patents)

6 patents: Sort by Forward Citations

1. 8236488 - Method of screening for therapeutic compounds for vascular disorders and hypertension based on URAT1 activity modulation (2012-08-07),

2. 7582447 - DNA encoding a testicular carnitine transporter (2009-09-01),

3. 7553642 - Branched neutral amino acid transporters acting as single molecule (2009-06-30),

4. 7521570 - Medicinal compositions containing 6-hydroxybenzbromarone or salts thereof (2009-04-21),

5. 7510847 - Kidney-specific urate transporter and gene thereof (2009-03-31),

6. 7244556 - Method of modulating a testicular carnitine transporter (2007-07-17),

Company Overview

Human Cell Systems, Inc. is a biotechnology company specializing in the development of innovative cell-based technologies for drug discovery and toxicology testing. Our cutting-edge research focuses on creating unique human cell models to simulate various disease states and evaluate drug efficacy and safety. With our expertise in cell biology and high-throughput screening, we help pharmaceutical companies accelerate drug development and improve patient outcomes.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

6 Patents

#2,468 in Tokyo

#5,988 in Japan

Tokyo, Japan

Human Cell Systems, Inc.

Forward Citations = 3

6 inventors:

Hitoshi Endou (6 out of 25 patents)

Yoshikatsu Kanai (5 out of 15 patents)

Atsushi Enomoto (3 out of 8 patents)

4. Richard J Johnson (1 out of 3 patents)

5. Toshihiro Oikawa (1 out of 11 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Human Cell Systems, Inc.. Retrieved from https://idiyas.com/company/human-cell-systems

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]

1 patent (CIPO):

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]

1 patent (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]