Hahn; Erwin

Patent Applications and Registrations

Patent applications and USPTO patent grants for Hahn; Erwin.The latest application filed is for "process of making metal-coated melamine/formaldehyde resin fibers".

Company Profile

0.16.0

Hahn; Erwin - Heidelberg DE

*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
Process of making metal-coated melamine/formaldehyde resin fibers Grant 5,560,961 - Adel , et al. October 1, 1	1996-10-01
Fluorescent pigments Grant 5,470,502 - Hahn , et al. November 28, 1	1995-11-28
Rhodamine derivatives Grant 5,410,053 - Hahn , et al. April 25, 1	1995-04-25
Recycling of cured aminoplast resins Grant 5,382,476 - Weiser , et al. January 17, 1	1995-01-17
Recycling of cured aminoplast resins Grant 5,356,938 - Weiser , et al. October 18, 1	1994-10-18
Azo dyes with a coupling component of the quinoline series Grant 5,306,815 - Hahn , et al. April 26, 1	1994-04-26
Stabilized aqueous alkyldiketene emulsions Grant 5,154,763 - Ksoll , et al. October 13, 1	1992-10-13
Dyeing of polyamide substrates with an organic N-nitroso-hydroxylamine as light stabilizer Grant 5,076,808 - Hahn , et al. December 31, 1	1991-12-31
Doubled triphenylmethane dyes having bis acylpiperazine linkage Grant 5,051,504 - Hahn , et al. September 24, 1	1991-09-24
Navy and black dye mixtures: thiophene azo disperse dye and red, yellow or orange disperse dye Grant 4,908,041 - Hahn , et al. March 13, 1	1990-03-13
Tetrachloroperylene-3,4,9,10-tetracarboxylic acid diimide pigment and its use Grant 4,846,892 - Henning , et al. July 11, 1	1989-07-11
Disazo compounds containing an N,N-bis(2-amino-benzoyl)piperazine derivative as the diazo component Grant 4,764,599 - Colberg , et al. August 16, 1	1988-08-16
.alpha.-methine substituted thiophene monoazo dye Grant 4,668,775 - Bergmann , et al. May 26, 1	1987-05-26
Basic chromium aluminum sulfates and their preparation Grant 4,629,616 - Ostertag , et al. December 16, 1	1986-12-16
Disperse dye formulations Grant 4,286,959 - Horn , et al. September 1, 1	1981-09-01
Spray-drying method for the preparation of water-dispersible pulverulent disperse dye formulations Grant 4,213,900 - Daubach , et al. July 22, 1	1980-07-22

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