Shamrock Industries, Inc.

Calculating rank

USPTO Granted Patents = 2

Trademarks = 4

Forward Citations = 16

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4 inventors (with patents filed for the assignee):

James V Ostrum (1 out of 3 patents)

Kenneth G Weller (1 out of 3 patents)

John E Richard (1 out of 2 patents)

4. Mark G Smiler (1 out of 1 patent)

2 patents: Sort by Forward Citations

1. 4881645 - Security cassette holdr having integrally formed retaining ramps (1989-11-21),

2. 4364476 - Plastic lid with stacking separation means (1982-12-21),

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USPTO Data Jan 1 1976 - Oct 27 2026

2 Patents

#11 in New Hope, MN

#2,530 in Minnesota

#94,953 in US

New Hope, MN, United States of America

Shamrock Industries, Inc.

Forward Citations = 16

4 inventors:

James V Ostrum (1 out of 3 patents)

Kenneth G Weller (1 out of 3 patents)

John E Richard (1 out of 2 patents)

4. Mark G Smiler (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Shamrock Industries, Inc.. Retrieved from https://idiyas.com/company/shamrock-industries

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]