Forward Citations = 37

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3 inventors (with patents filed for the assignee):

Jack R Raum (1 out of 4 patents)

Richard T Middleton (1 out of 1 patent)

John Larson (1 out of 1 patent)

2 patents: Sort by Forward Citations

1. 5520006 - Airflow and defrosting system for refrigeration systems and apparatus (1996-05-28),

2. 5501319 - Conveyor belt with asymmetric edge links (1996-03-26),

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

2 Patents

#14 in Northfield, MN

#2,528 in Minnesota

#94,905 in US

Northfield, MN, United States of America

Northfield Freezing Systems, Inc.

Forward Citations = 37

3 inventors:

Jack R Raum (1 out of 4 patents)

Richard T Middleton (1 out of 1 patent)

John Larson (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Northfield Freezing Systems, Inc.. Retrieved from https://idiyas.com/company/northfield-freezing-systems

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]