Growing community of inventors

Sugar Land, TX, United States of America

Piper A Spry

Average Co-Inventor Count = 4.00

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 = 50

Piper A Spry ↔ Stephen A Keller (2 patents)Piper A Spry ↔ Martha S Adams (2 patents)Piper A Spry ↔ Ralph G Harper (2 patents)Piper A SpryPiper A Spry (2 patents)Stephen A KellerStephen A Keller (16 patents)Martha S AdamsMartha S Adams (2 patents)Ralph G HarperRalph G Harper (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Texas Instruments Corporation (2 from 29,263 patents)


2 patents:

1. 4997789 - Aluminum contact etch mask and etchstop for tungsten etchback

2. 4920072 - Method of forming metal interconnects

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as of
12/27/2025
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