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Punxsutawney, PA, United States of America

Stephen R Means

Average Co-Inventor Count = 3.00

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 = 13

Stephen R Means ↔ Thomas A Walker (2 patents)Stephen R Means ↔ Richard Smith (1 patent)Stephen R Means ↔ Richard K Smith, Jr (1 patent)Stephen R Means ↔ Richard K Smith (1 patent)Stephen R Means ↔ Richard Smith (1 patent)Stephen R MeansStephen R Means (2 patents)Thomas A WalkerThomas A Walker (4 patents)Richard SmithRichard Smith (12 patents)Richard K Smith, JrRichard K Smith, Jr (1 patent)Richard K SmithRichard K Smith (2 patents)Richard SmithRichard Smith (4 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Keystone Drill Services, Inc. (2 from 2 patents)

2. Relevant, Inc. (1 patent)

3. Keystone Air & Drill Supply Co. (0 patent)


2 patents:

1. 7419017 - Multi-sectional percussive drill bit assembly

2. 7389833 - Multi-sectional percussive drill bit assembly

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as of
12/10/2025
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