Growing community of inventors

Cary, IL, United States of America

Larry E Zack

Average Co-Inventor Count = 1.64

ph-index = 3

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 = 141

Larry E ZackNorman Diamond (1 patent)Larry E ZackArthur S Zerfahs (1 patent)Larry E ZackJohn S Glinka (1 patent)Larry E ZackLarry E Zack (3 patents)Norman DiamondNorman Diamond (7 patents)Arthur S ZerfahsArthur S Zerfahs (6 patents)John S GlinkaJohn S Glinka (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. General Signal Corporation (2 from 786 patents)

2. Qonaar Corporation (1 from 14 patents)


3 patents:

1. 5225665 - Ticket originating and processing device for transit vehicle

2. 4730117 - Cash box identification system

3. 4380316 - Electronic interlock for a cash collection receptacle

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as of
12/11/2025
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