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For the Inventor, By the Inventor

Kuwana, Japan

Kuwana Metals, Ltd.

Calculating rank
USPTO Granted Patents = 5


Trademarks = 1

Forward Citations = 0

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6 inventors (with patents filed for the assignee):

goldMedal Akira Sasaki (3 out of 6 patents)

silverMedal Ryo Goto (1 out of 31 patents)

bronzeMedal Masaaki Itatani (1 out of 1 patent)

4.  Kenta Matsuura (1 patent)

5.  Takayuki Fukaya (0 patent)

6.  Hiroshi Matsui (0 patent)


5 patents:

1. 12760395 - Black heart malleable cast iron and method for producing same (2026-10-13),
2. 12584775 - Temperature sensor as well as mass flow meter and mass flow controller comprising the same (2026-03-24),
3. 12349300 - Airtight connection unit, airtight connection assembly, airtight container and vaporizer, as well as production method of airtight connection assembly (2025-07-01),
4. 12339155 - Sensor (2025-06-24),
5. 12253402 - Liquid level sensor (2025-03-18),
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USPTO Data Jan 1 1976 - Oct 27 2026

5 Patents

#4 in Kuwana

#6,656 in Japan

Kuwana, JP
Kuwana, Japan

Kuwana Metals, Ltd.

Forward Citations = 0

6 inventors:

goldMedal Akira Sasaki (3 out of 6 patents)

silverMedal Ryo Goto (1 out of 31 patents)

bronzeMedal Masaaki Itatani (1 out of 1 patent)

4.  Kenta Matsuura (1 patent)

5.  Takayuki Fukaya (0 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Kuwana Metals, Ltd.. Retrieved from https://idiyas.com/company/kuwana-metals

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]
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