Growing community of inventors

Mt. Lebanon, PA, United States of America

William L Krayer

Average Co-Inventor Count = 3.00

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 = 15

William L KrayerLeonard A Cullo (3 patents)William L KrayerAndrew J Sivak (3 patents)William L KrayerWilliam L Krayer (3 patents)Leonard A CulloLeonard A Cullo (30 patents)Andrew J SivakAndrew J Sivak (15 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Aristech Chemical Corporation (3 from 104 patents)


3 patents:

1. 5248737 - Method of making amine/propylene copolymers

2. 5239030 - Amine/propylene copolymers

3. 5200542 - Diallyl silyl amines

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as of
12/18/2025
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