Growing community of inventors

Newtown, CT, United States of America

Douglas T Main, Jr

Average Co-Inventor Count = 2.67

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 = 83

Douglas T Main, JrRobin Clark (2 patents)Douglas T Main, JrBrewster W LaMacchia (1 patent)Douglas T Main, JrJeffery L Boyle (1 patent)Douglas T Main, JrDouglas T Main, Jr (2 patents)Robin ClarkRobin Clark (3 patents)Brewster W LaMacchiaBrewster W LaMacchia (2 patents)Jeffery L BoyleJeffery L Boyle (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Sperry Rail, Inc. (2 from 7 patents)


2 patents:

1. 6600999 - Hi-rail vehicle-based rail inspection system

2. 6476603 - Brush assembly for magnetic induction test apparatus

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as of
12/18/2025
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