Forward Citations = 12

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5 inventors (with patents filed for the assignee):

Rex E Wagers (1 out of 4 patents)

James A Hale (1 out of 11 patents)

Herbert L Carpenter, Jr (1 out of 4 patents)

4. Robert A Dubois (1 out of 8 patents)

5. Richard A Caron (1 out of 1 patent)

3 patents: Sort by Forward Citations

1. 4982867 - Drum with self-supporting liner (1991-01-08),

2. 4971241 - Fast flo drums (1990-11-20),

3. 4951833 - End construction with hollow beam construction for a drum (1990-08-28),

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

3 Patents

#15 in Delaware, OH

#2,863 in Ohio

#73,860 in US

Delaware, OH, United States of America

Greif Brothers Corporation

Forward Citations = 12

5 inventors:

Rex E Wagers (1 out of 4 patents)

James A Hale (1 out of 11 patents)

Herbert L Carpenter, Jr (1 out of 4 patents)

4. Robert A Dubois (1 out of 8 patents)

5. Richard A Caron (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Greif Brothers Corporation. Retrieved from https://idiyas.com/company/greif-brothers

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]