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:
Dec. 22, 1992
Filed:
Jun. 28, 1990
Applicant:
Inventors:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08B / ; A61K / ;
U.S. Cl.
CPC ...
514 58 ; 536103 ;
Abstract
A process for producing monosubstituted alpha-, beta-, and gamma-cyclodextrins includes the step of condensing an excess of a cyclodextrin with an epoxide under alkaline conditions. A process for increasing the solubility of cyclodextrins includes the step of reacting a cyclodextrin with an amine under heterogenous catalytic conditions, or subjecting the cyclodextrin to sulfatation. Compositions useful in these processes include one containing at least one cyclodextrin, ammonia and Raney nickel, and a second composition containing at least one cyclodextrin, chlorosulfonic acid and pyridine.
Pitha, Josef. (1992). Preparation of specifically substituted cyclodextrins (U.S. Patent No. 5173481). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5173481
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