Trademarks = 2

Forward Citations = 3

Loading Chart...

4 inventors (with patents filed for the assignee):

Takashi Tanaka (1 out of 36 patents)

Tomoyuki Miyagawa (1 out of 4 patents)

Yoshio Ishii (1 out of 5 patents)

4. Naoto Shirai (1 out of 1 patent)

2 patents: Sort by Forward Citations

1. 12240671 - Packing material and packed product (2025-03-04),

2. 6120828 - Method for freezing boiled rice in separate small-lump form (2000-09-19),

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

2 Patents

#4,372 in Tokyo

#11,139 in Japan

Tokyo, Japan

Howa Sangyo Co., Ltd.

Forward Citations = 3

4 inventors:

Takashi Tanaka (1 out of 36 patents)

Tomoyuki Miyagawa (1 out of 4 patents)

Yoshio Ishii (1 out of 5 patents)

4. Naoto Shirai (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Howa Sangyo Co., Ltd.. Retrieved from https://idiyas.com/company/howa-sangyo-company

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]