Growing community of inventors

Waukegan, IL, United States of America

Sigmar E Sobczak

Average Co-Inventor Count = 2.00

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 = 3

Sigmar E Sobczak ↔ Kenneth M Hattori (1 patent)Sigmar E SobczakSigmar E Sobczak (1 patent)Kenneth M HattoriKenneth M Hattori (15 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Acme Burgess, Inc. (1 from 6 patents)


1 patent:

1. D260116 - Lawn fertilizer feeder

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as of
12/17/2025
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