Growing community of inventors

Sterling Heights, MI, United States of America

David C Shifflett

Average Co-Inventor Count = 2.25

ph-index = 3

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 = 41

David C ShifflettLouis E Hough (3 patents)David C ShifflettWalter J De Vigili (1 patent)David C ShifflettDavid C Shifflett (3 patents)Louis E HoughLouis E Hough (9 patents)Walter J De VigiliWalter J De Vigili (4 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Empire Automotive, Inc. (2 from 7 patents)

2. Other (1 from 832,718 patents)


3 patents:

1. 4394044 - Removable sunroof for vehicles

2. 4216983 - Detachable sunroof for automobiles

3. 4154474 - Detachable sunroof for automobiles

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as of
12/11/2025
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