Growing community of inventors

West Millbury, MA, United States of America

Charles Kupfer

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 = 29

Charles Kupfer ↔ Thomas M Lee (1 patent)Charles KupferCharles Kupfer (1 patent)Thomas M LeeThomas M Lee (7 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Other (1 from 832,718 patents)


1 patent:

1. 4222191 - Conversion plug

Please report any incorrect information to support@idiyas.com
idiyas.com
as of
12/11/2025
Loading…