Growing community of inventors

Cedar Falls, IA, United States of America

Normal L Calhoun

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 = 15

Normal L Calhoun ↔ Richard D Purchase (1 patent)Normal L CalhounNormal L Calhoun (1 patent)Richard D PurchaseRichard D Purchase (3 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Waterloo Industries, Inc. (1 from 110 patents)


1 patent:

1. 5372175 - Tambour door construction

Please report any incorrect information to support@idiyas.com
idiyas.com
as of
1/12/2026
Loading…