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:
Nov. 06, 2007
Filed:
Jan. 09, 2004
Alan Christopher Spivey, Sheffield, GB;
Tomasz Fekner, Lublin, PL;
Alan Christopher Spivey, Sheffield, GB;
Tomasz Fekner, Lublin, PL;
Imperial Innovations Limited, London, GB;
Abstract
A chiral catalyst comprising a 3, 4-disubstituted pyridine, or a salt, N functionalised derivative, dimer or oligomer thereof, wherein the 3-substituent is substantially hindered from rotation about the bond (sp-spbiaryl axis) linking it to pyridine and the 4-substituent is an aliphatic or aromatic amine linked by a single bond to the pyridine, the pyridine nitrogen being functionalised or unfunctionalised, preferably comprising a compound of formula I wherein Z is a group substantially hindered from rotation about its bond; and
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile