Growing community of inventors

Lake Zurich, IL, United States of America

Steven J Purdy

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 = 63

Steven J PurdyDennis L Stephens (1 patent)Steven J PurdyJeffrey D Merwin (1 patent)Steven J PurdyPhilip D Gunderson (1 patent)Steven J PurdySteven J Purdy (1 patent)Dennis L StephensDennis L Stephens (30 patents)Jeffrey D MerwinJeffrey D Merwin (8 patents)Philip D GundersonPhilip D Gunderson (4 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Motoral, Inc. (1 from 1 patent)


1 patent:

1. 5689230 - Energy monitoring and control system using reverse transmission on AC

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1/19/2026
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