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Heidi Benthack-Thoms
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Limburgerhof, DE
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last 30 patents
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Patent Grant
Naphtholactamtrimethine dyes and optical recording medium containin...
Patent number
5,002,863
Issue date
Mar 26, 1991
BASF Aktiengesellschaft
Matthias Dust
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Naphtholactam dyes and optical recording medium containing these dyes
Patent number
4,939,012
Issue date
Jul 3, 1990
BASF Aktiengesellschaft
Matthias Dust
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Optical recording medium containing an azulenium dye
Patent number
4,904,566
Issue date
Feb 27, 1990
BASF Aktiengesellschaft
Wolfgang Schrott
G11 - INFORMATION STORAGE
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Patent Grant
Naphtholactam dyes and optical recording medium containing these days
Patent number
4,876,356
Issue date
Oct 24, 1989
BASF Aktiengesellschaft
Matthias Dust
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Naphtholactamsquaric acid dyes and optical recording materials cont...
Patent number
4,830,951
Issue date
May 16, 1989
BASF Aktiengesellschaft
Matthias Dust
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...