Growing community of inventors

Lenox, MA, United States of America

Peter J Sprague

Average Co-Inventor Count = 1.57

ph-index = 5

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 = 1,036

Peter J SpragueWayne D Boyle (2 patents)Peter J SpragueJanet M Baker (1 patent)Peter J SpragueThomas H Lipscomb (1 patent)Peter J SpragueGeorge R Hergenrother (1 patent)Peter J SpraguePeter J Sprague (6 patents)Wayne D BoyleWayne D Boyle (2 patents)Janet M BakerJanet M Baker (6 patents)Thomas H LipscombThomas H Lipscomb (5 patents)George R HergenrotherGeorge R Hergenrother (3 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Other (2 from 832,812 patents)

2. Okappi, Inc. (2 from 2 patents)

3. Wave Systems, Inc. (1 from 12 patents)

4. Advent Corporation (1 from 6 patents)


6 patents:

1. 9380374 - Hearing assistance systems configured to detect and provide protection to the user from harmful conditions

2. 9301057 - Hearing assistance system

3. 6895169 - Method and apparatus for VCR recording using key word selection of advance broadcast data

4. 6072645 - Method and apparatus for retroactive recording using memory of past

5. 5247575 - Information distribution system

6. 4177400 - Projection cathode ray tube having target angularly and longitudinally

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as of
12/21/2025
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