Preparation by synthesis of the nucleus

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Patents Grantslast 30 patents

Information Patent Grant
Synthesis of carminic acid and principal intermediates
- Patent number 5,424,421
- Issue date Jun 13, 1995
- European Colour PLC
- John H. P. Tyman
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the production of quinizarine derivatives which are dis...
- Patent number 4,645,626
- Issue date Feb 24, 1987
- Ciba-Geigy AG
- Peter Bloch
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of quinizarin
- Patent number 4,387,054
- Issue date Jun 7, 1983
- Bayer Aktiengesellschaft
- Reinold Schmitz
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Preparation of hydroxyanthraquinones
- Patent number 4,292,248
- Issue date Sep 29, 1981
- American Color & Chemical Corporation
- William A. Michalowicz
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
2695302
- Patent number 2,695,302
- Issue date Nov 23, 1954
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
1886237
- Patent number 1,886,237
- Issue date Nov 1, 1932
- B60 - VEHICLES IN GENERAL
Information Patent Grant
1790932
- Patent number 1,790,932
- Issue date Feb 3, 1931
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
1790915
- Patent number 1,790,915
- Issue date Feb 3, 1931
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...