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For the Inventor, By the Inventor

Tokyo, Japan

Rid Corporation


USPTO Granted Patents = 2

Forward Citations = 41

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3 inventors (with patents filed for the assignee):

goldMedal Yasuhiro Sawada (1 out of 48 patents)

silverMedal Tsutomu Itoh (1 out of 33 patents)

bronzeMedal Hiromichi Toyota, Deceased (1 out of 1 patent)


2 patents:

1. 6176647 - Instrument for measuring mass flow rate of powder, and electrostatic powder coating apparatus utilizing the same (2001-01-23),
2. 5928423 - Pneumatically fed powder supply system and powder coating apparatus (1999-07-27),
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USPTO Data Jan 1 1976 - Oct 20 2026

2 Patents

#4,372 in Tokyo

#11,139 in Japan

Tokyo, JP
Tokyo, Japan

Rid Corporation

Forward Citations = 41

3 inventors:

goldMedal Yasuhiro Sawada (1 out of 48 patents)

silverMedal Tsutomu Itoh (1 out of 33 patents)

bronzeMedal Hiromichi Toyota, Deceased (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Rid Corporation. Retrieved from https://idiyas.com/company/rid

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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