Growing community of inventors

Pittsburgh, PA, United States of America

S Tonya Stefko

Average Co-Inventor Count = 6.86

ph-index = 2

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 = 11

S Tonya Stefko ↔ Gregory J McCollum (2 patents)S Tonya Stefko ↔ Kurt Gordon Olson (2 patents)S Tonya Stefko ↔ Debra L Singer (2 patents)S Tonya Stefko ↔ Michael Allen Mayo (2 patents)S Tonya Stefko ↔ Shanti Swarup (1 patent)S Tonya Stefko ↔ Richard J Sadvary (1 patent)S Tonya Stefko ↔ Dennis L Faler (1 patent)S Tonya Stefko ↔ Robyn E McMillan (1 patent)S Tonya StefkoS Tonya Stefko (2 patents)Gregory J McCollumGregory J McCollum (137 patents)Kurt Gordon OlsonKurt Gordon Olson (92 patents)Debra L SingerDebra L Singer (52 patents)Michael Allen MayoMichael Allen Mayo (42 patents)Shanti SwarupShanti Swarup (120 patents)Richard J SadvaryRichard J Sadvary (42 patents)Dennis L FalerDennis L Faler (38 patents)Robyn E McMillanRobyn E McMillan (5 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Ppg Industries Ohio, Inc. (2 from 1,742 patents)


2 patents:

1. 6228974 - Aminoplast curable film-forming compositions providing films having resistance to acid etching

2. 6103816 - Aqueous aminoplast curable film-forming compositions providing films

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12/12/2025
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