Growing community of inventors

Jenison, MI, United States of America

William L Katsma

Average Co-Inventor Count = 4.60

ph-index = 4

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 = 902

William L KatsmaPhilip D Stegenga (2 patents)William L KatsmaJohn F Thomas (2 patents)William L KatsmaEldon J Nyhof (2 patents)William L KatsmaBrian I Skogler (2 patents)William L KatsmaDenis Wood (2 patents)William L KatsmaBarry Dipper (2 patents)William L KatsmaRobert L Norton (2 patents)William L KatsmaJohn H Veltkamp (2 patents)William L KatsmaWilliam W Gallmeyer (1 patent)William L KatsmaWilliam L Katsma (4 patents)Philip D StegengaPhilip D Stegenga (9 patents)John F ThomasJohn F Thomas (8 patents)Eldon J NyhofEldon J Nyhof (7 patents)Brian I SkoglerBrian I Skogler (6 patents)Denis WoodDenis Wood (3 patents)Barry DipperBarry Dipper (3 patents)Robert L NortonRobert L Norton (2 patents)John H VeltkampJohn H Veltkamp (2 patents)William W GallmeyerWilliam W Gallmeyer (14 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Donnelly Corporation (3 from 912 patents)

2. Donnelly Mirrors Limited (1 from 37 patents)


4 patents:

1. D289989 - Rearview mirror/light assembly

2. 4646210 - Vehicular mirror and light assembly

3. 4524941 - Rearview mirror support bracket

4. 4435042 - Vehicle mirror and support assembly

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as of
1/3/2026
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