Growing community of inventors

Auburn, ME, United States of America

Douglas S Pearmain

Average Co-Inventor Count = 3.00

ph-index = 4

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 = 161

Douglas S PearmainAllan R LaRoche (3 patents)Douglas S PearmainRobert A Butcher (1 patent)Douglas S PearmainDenis M Kelleher (1 patent)Douglas S PearmainMarcel L Corriveau (1 patent)Douglas S PearmainJean A Dubuc (1 patent)Douglas S PearmainGeorge W Velenovsky, Jr (1 patent)Douglas S PearmainRichard M Morrison (1 patent)Douglas S PearmainDouglas S Pearmain (4 patents)Allan R LaRocheAllan R LaRoche (5 patents)Robert A ButcherRobert A Butcher (5 patents)Denis M KelleherDenis M Kelleher (3 patents)Marcel L CorriveauMarcel L Corriveau (2 patents)Jean A DubucJean A Dubuc (2 patents)George W Velenovsky, JrGeorge W Velenovsky, Jr (1 patent)Richard M MorrisonRichard M Morrison (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Manville Corporation (2 from 151 patents)

2. Other (1 from 832,761 patents)

3. Schuller International, Inc. (1 from 55 patents)


4 patents:

1. 5269110 - Flexible closure system for use in building construction

2. 4977719 - Fire resistant expansion joint

3. 4866898 - Fire resistant expansion joint

4. 4848044 - Expansion joint cover

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idiyas.com
as of
12/16/2025
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