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:
Jun. 01, 1993
Filed:
Mar. 24, 1992
James R Beadle, Elkridge, MD (US);
Gilbert V Levin, Annapolis, MD (US);
Lee R Zehner, Brookeville, MD (US);
Biospherics Incorporated, Beltsville, MD (US);
Abstract
Free flowing, substantially pure, non-hygroscopic, crystalline .beta.-D-gulopyranose is disclosed. This crystalline form of D-gulose is characterized by a sharp melting point of 130.degree.-132.degree. C., a specific optical rotation of -40.degree. and characteristic mutarotation. A method for preparation of crystalline .beta.-D-gulopyranose from D-gulose syrup is also disclosed. This method involves dilution of the D-gulose syrup, followed by initiation of crystallization, and isolation of .beta.-D-gulopyranose crystals. Crystalline .beta.-D-gulopyranose may be used as an excipient, a chelating agent, a pharmaceutical intermediate, a cleaning agent for glass and metals, a food additive, and as an additive for detergents.