Troster; Helmut

Patent Applications and Registrations

Patent applications and USPTO patent grants for Troster; Helmut.The latest application filed is for "mix-crystal pigments based on perylenetetracarbimides, process for their preparation and their use".

Company Profile

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Troster; Helmut - Konigstein/Taunus DE
Troster; Helmut - Konigstein DE
Troster; Helmut - Frankfurt am Main DT

*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
Mix-crystal pigments based on perylenetetracarbimides, process for their preparation and their use Grant 5,154,770 - Spietschka , et al. * October 13, 1	1992-10-13
Mix-crystal pigments based on perylenetetracarbimides, process for preparing and their use Grant 4,769,460 - Spietschka , et al. September 6, 1	1988-09-06
Perylene-3,4,9,10-tetracarboxylic acid monoanhydride monoimides Grant 4,599,408 - Spietschka , et al. July 8, 1	1986-07-08
Perylene-3,4,9,10-tetracarboxylic acid monoanhydride monoimide and monoimidazolide compounds, processes for their preparation and their use Grant 4,594,420 - Spietschka , et al. June 10, 1	1986-06-10
Water soluble benzoxanthene dyestuffs for fluorescent inks Grant 4,242,139 - Troster December 30, 1	1980-12-30
Dyed polyesters, process for their preparation and their use for the dyeing of plastics Grant 4,116,923 - Gattner , et al. September 26, 1	1978-09-26
Benzoxanthene and benzothioxanthene dyestuffs and process for their manufacture Grant 3,888,863 - Troster June 10, 1	1975-06-10

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