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Lake Orion, MI, United States of America

John Sienkiewicz

Average Co-Inventor Count = 2.00

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 = 63

John SienkiewiczHenry H Smith (2 patents)John SienkiewiczJoseph J Randazzo (1 patent)John SienkiewiczJohn Sienkiewicz (3 patents)Henry H SmithHenry H Smith (4 patents)Joseph J RandazzoJoseph J Randazzo (5 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Guardian Automotive Trim, Inc. (2 from 6 patents)

2. Guardian Industries Corporation (1 from 720 patents)


3 patents:

1. 7195727 - Extruded automotive trim and method of making same

2. 7005103 - Method of making a colored automotive trim product

3. 6319438 - Extruded automotive trim and method of making same

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as of
12/19/2025
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