Growing community of inventors

Conyers, GA, United States of America

Bruce A Hefner

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 = 9

Bruce A HefnerR David Lewis (1 patent)Bruce A HefnerPaul D Hiltman (1 patent)Bruce A HefnerRobert E Gray (1 patent)Bruce A HefnerBruce A Hefner (1 patent)R David LewisR David Lewis (6 patents)Paul D HiltmanPaul D Hiltman (5 patents)Robert E GrayRobert E Gray (3 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. International Safety Instruments, Inc. (1 from 9 patents)


1 patent:

1. 5640148 - Dual activation alarm system

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12/17/2025
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