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Patent Summary - Canadian Patents Databaseic.gc.ca

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GUNTER GEHRKE (Not Available) · RUTGER NEEFF (Not Available) · PETER WEGNER (Not Available) · VOLKER HEDERICH (Not Available).

Official Gazette of the United States Patent Office: Patents

books.google.at

... Volker Hederich ; Gunter Gehrke , and Manfred Groll , all of Cologne , Germany , assignors to Bayer Aktiengesellschaft , Leverkusen , Germany Filed Jan

Official Gazette of the United States Patent Office - United States....

books.google.de

3,467, AMINO-2-ARYLOXY-4-ARYLSULFON- AMIDO-ANTHRAQUINONES Volker Hederich, Cologne-Deutz, and Giinter Gehrke, Cologne-Flittard, ...

Official Gazette of the United States Patent and Trademark Office:...

books.google.co.uk

4,424,160 PROCESS FOR THE PREPARATION OF 1-HYDROXY-4-AMINO-5(8)- NITROANTHRAQUINONE Volker Hederich, and Günter Gehrke, both of ...

Official Gazette of the United States Patent Office: Patents...

books.google.de

D06m ; D06c Gunter Gehrke and Volker Hederich , Cologne , Rutger U.S. Cl . 8– Claims Neeff , Leverkusen , and Peter Wegner , Cologne ...

CA A - Process for the continuous dyeing of synthetic fibre ...patents.google.com › patent

patents.google.com

Inventor: Volker Hederich: Gunter Gehrke: Manfred Groll; Current Assignee. The listed assignees may be inaccurate. Google has not performed a legal analysis ...

USRE29577E - Anthraquinone dyestuffs - Google PatentsGoogle

www.google.com.ag

Inventor: Volker Hederich: Friedrich Wilhelm Krock: Gunter Gehrke: Rutger Neeff; Current Assignee. The listed assignees may be inaccurate.

Process for dyeing synthetic fibers - Patent CH A - PubChemtestpubchem.ncbi.nlm.nih.gov › patent › CH

testpubchem.ncbi.nlm.nih.gov

VOLKER HEDERICH (DE). GUENTER GEHRKE (DE). Assignee. BAYER AG (DE). Date. Priority Description. This web page summarizes information in PubChem ...

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