% Expired Patents = 100.0

CIPO Patents = 1

EPO Patents = 1

Forward Citations = 3

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5 inventors (with patents filed for the assignee):

Masaru Ichikawa (1 out of 12 patents)

Katsumori Tanabe (1 out of 1 patent)

Masashi Sakuramoto (1 out of 1 patent)

4. Yukimitsu Mita (1 out of 1 patent)

5. Satoru Kikuchi (1 out of 8 patents)

6. Tadashi Sakuramoto (0 patent)

7. Yukimitsu Mita (0 patent)

8. Tetsu Kikuchi (0 patent)

9. Yukimitsu Mita (0 patent)

1 patent: Sort by Forward Citations

#32 in Sapporo

#15,759 in Japan

Hrein Energy, Inc.

Forward Citations = 3

5 inventors:

Masaru Ichikawa (1 out of 12 patents)

Katsumori Tanabe (1 out of 1 patent)

Masashi Sakuramoto (1 out of 1 patent)

4. Yukimitsu Mita (1 out of 1 patent)

5. Satoru Kikuchi (1 out of 8 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Hrein Energy, Inc.. Retrieved from https://idiyas.com/company/hrein-energy

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]