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:
Apr. 17, 1979
Filed:
May. 16, 1977
Applicant:
Inventor:
Robert E Wingard, Palo Alto, CA (US);
Assignee:
Dynapol, Palo Alto, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
2603452 ;
Abstract
An improved procedure for the conversion of commercial hesperidin into high-purity, crystalline hesperetin is disclosed. This procedure comprises purifying the crude starting material by insolubles removal and precipitation, followed by cleaving the saccharides with a strong mineral acid in lower primary alkanol. The use of lower alkanol in this transformation facilitates the isolation of a high purity product uncontaminated by resinified sugars.