Growing community of inventors

Denver, PA, United States of America

Ralph E Unruh

Average Co-Inventor Count = 3.00

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 = 139

Ralph E UnruhJesse D Miller, Jr (3 patents)Ralph E UnruhJames A Tshudy (3 patents)Ralph E UnruhRalph E Unruh (3 patents)Jesse D Miller, JrJesse D Miller, Jr (8 patents)James A TshudyJames A Tshudy (7 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Armstrong World Industries, Inc. (3 from 448 patents)


3 patents:

1. 4689259 - Floor tile product and process

2. 4504523 - Durable, low-maintenance flooring tile

3. 4418109 - Durable, low-maintenance flooring tile

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as of
1/10/2026
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