The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 08, 2015
Filed:
Dec. 22, 2011
Burkard Kreidler, Essen, DE;
Dirk Fridag, Haltern am See, DE;
Bernhard Schemmer, Haltern am See, DE;
Bjoern Wechsler, Borken, DE;
Andrea Christiansen, Neu-Ulm, DE;
Doris Neumann, Offenbach a. M., DE;
Burkard Kreidler, Essen, DE;
Dirk Fridag, Haltern am See, DE;
Bernhard Schemmer, Haltern am See, DE;
Bjoern Wechsler, Borken, DE;
Andrea Christiansen, Neu-Ulm, DE;
Doris Neumann, Offenbach a. M., DE;
EVONIK DEGUSSA GmbH, Essen, DE;
Abstract
The invention relates to a process for producing 6,6'-[(3,3′-di-tert-butyl-5,5′-dimethoxy-1,1′-biphenyl-2,2′diyl)bis(oxy)]bis(dibenzo[d,f][1,3,2]dioxaphosphepine), abbreviated to biphephos (see formula 1), with low chlorine content.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile