Growing community of inventors

Millbury, MA, United States of America

Frank Croghan

Average Co-Inventor Count = 6.00

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 = 0

Frank CroghanHilmar Lehnert (1 patent)Frank CroghanWade P Torres (1 patent)Frank CroghanKlaus Hartung (1 patent)Frank CroghanPelham Norville (1 patent)Frank CroghanDaniel M Morton (1 patent)Frank CroghanFrank Croghan (1 patent)Hilmar LehnertHilmar Lehnert (81 patents)Wade P TorresWade P Torres (23 patents)Klaus HartungKlaus Hartung (16 patents)Pelham NorvillePelham Norville (13 patents)Daniel M MortonDaniel M Morton (3 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Bose Corporation (1 from 2,162 patents)


1 patent:

1. 9426574 - Automatic audio source switching

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1/21/2026
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