Growing community of inventors

St. Paul Park, MN, United States of America

Donald James Hammer

Average Co-Inventor Count = 5.00

ph-index = 2

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 35

Donald James HammerKarl J Fritze (2 patents)Donald James HammerBruce Hamilton Koerner (2 patents)Donald James HammerKirby Juhl Kuhlemeier (2 patents)Donald James HammerScott Mitchell Harrison (2 patents)Donald James HammerDonald James Hammer (2 patents)Karl J FritzeKarl J Fritze (47 patents)Bruce Hamilton KoernerBruce Hamilton Koerner (10 patents)Kirby Juhl KuhlemeierKirby Juhl Kuhlemeier (6 patents)Scott Mitchell HarrisonScott Mitchell Harrison (3 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Ram Center, Inc. (2 from 3 patents)


2 patents:

1. 6481602 - Dispenser for frangible frozen food articles

2. 6305573 - Dispenser for frangible frozen food articles

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as of
12/20/2025
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