McGowan; Donald A.

Patent Applications and Registrations

Patent applications and USPTO patent grants for McGowan; Donald A..The latest application filed is for "processes for the preparation of squarylium dyes".

Company Profile

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McGowan; Donald A. - Bedford MA
McGowan; Donald A. - Stoneham MA

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Processes for the preparation of squarylium dyes Grant 5,795,981 - Lee , et al. August 18, 1	1998-08-18
Squarylium dyes, and processes and intermediates for the preparation thereof Grant 5,492,795 - Allen , et al. February 20, 1	1996-02-20
Squarylium dyes, and processes and intermediates for the preparation thereof Grant 5,354,873 - Allen , et al. October 11, 1	1994-10-11
Squarylium compounds, and processes and intermediates for the synthesis of these compounds Grant 5,231,190 - McGowan , et al. July 27, 1	1993-07-27
Squarylium dyes, and processes and intermediates for the preparation thereof Grant 5,227,498 - Lee , et al. July 13, 1	1993-07-13
Substituted squarylium dyes, and processes and intermediates for the preparation thereof Grant 5,227,499 - McGowan , et al. July 13, 1	1993-07-13
Color-shifted dyes with thermally unstable carbamate moiety comprising T-alkoxycarbonyl group Grant 4,826,976 - Borror , et al. May 2, 1	1989-05-02
Optical storage identification card and read/write system Grant 4,663,518 - Borror , et al. May 5, 1	1987-05-05
Thermal imaging method Grant 4,602,263 - Borror , et al. July 22, 1	1986-07-22

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