Growing community of inventors

Hanover, NH, United States of America

Donald E Derrick

Average Co-Inventor Count = 5.00

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 = 14

Donald E DerrickRobert H Marion (1 patent)Donald E DerrickWilliam A Tower (1 patent)Donald E DerrickL Christopher Towle (1 patent)Donald E DerrickHollis A Harris (1 patent)Donald E DerrickDonald E Derrick (1 patent)Robert H MarionRobert H Marion (2 patents)William A TowerWilliam A Tower (2 patents)L Christopher TowleL Christopher Towle (1 patent)Hollis A HarrisHollis A Harris (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Loctite Luminescent Systems, Inc. (1 from 6 patents)

2. The Mtl Instruments Group Plc (1 from 3 patents)


1 patent:

1. 5412544 - Method of illuminating and providing emergency egress guidance for

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12/17/2025
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