Growing community of inventors

Bridgeport, CT, United States of America

Donald Grailich

Average Co-Inventor Count = 4.00

ph-index = 1

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 = 108

Donald GrailichJacob W Jorgensen (1 patent)Donald GrailichStephen D Peavey (1 patent)Donald GrailichAndrew Heron (1 patent)Donald GrailichDonald Grailich (1 patent)Jacob W JorgensenJacob W Jorgensen (4 patents)Stephen D PeaveyStephen D Peavey (2 patents)Andrew HeronAndrew Heron (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Eis International, Inc. (1 from 7 patents)


1 patent:

1. 5867559 - Real-time, on-line, call verification system

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as of
12/20/2025
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