Growing community of inventors

Lake Orion, MI, United States of America

Ann K Duffy

Average Co-Inventor Count = 12.00

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 = 8

Ann K DuffyPaul W Alexander (2 patents)Ann K DuffyMary Ellen DeCaluwe (2 patents)Ann K DuffyLouise E Stauffer (2 patents)Ann K DuffyDavid R Fischer (2 patents)Ann K DuffyJim K Rainbolt (2 patents)Ann K DuffySpencer W Chamberlain (2 patents)Ann K DuffyJoseph Neighbors (2 patents)Ann K DuffySandra N Thomson (2 patents)Ann K DuffyJoseph Bilderbeck (2 patents)Ann K DuffyJoseph F Szczerba (1 patent)Ann K DuffyDorel M Sala (1 patent)Ann K DuffyRoy J Mathieu (1 patent)Ann K DuffyJanet S Goings (1 patent)Ann K DuffyWilliam J Ochalek (1 patent)Ann K DuffyAnn K Duffy (2 patents)Paul W AlexanderPaul W Alexander (187 patents)Mary Ellen DeCaluweMary Ellen DeCaluwe (10 patents)Louise E StaufferLouise E Stauffer (8 patents)David R FischerDavid R Fischer (7 patents)Jim K RainboltJim K Rainbolt (6 patents)Spencer W ChamberlainSpencer W Chamberlain (5 patents)Joseph NeighborsJoseph Neighbors (5 patents)Sandra N ThomsonSandra N Thomson (4 patents)Joseph BilderbeckJoseph Bilderbeck (3 patents)Joseph F SzczerbaJoseph F Szczerba (173 patents)Dorel M SalaDorel M Sala (45 patents)Roy J MathieuRoy J Mathieu (27 patents)Janet S GoingsJanet S Goings (7 patents)William J OchalekWilliam J Ochalek (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Gm Global Technolgoy Operations, Inc. (2 from 31,002 patents)


2 patents:

1. 10040432 - Systems and methods for promoting cleanliness of a vehicle

2. 9855926 - Systems and methods for promoting cleanliness of a vehicle

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12/27/2025
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