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:
Oct. 03, 1978
Filed:
Dec. 28, 1976
Applicant:
Inventor:
Walton J Smith, Grafton, NH (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F26B / ;
U.S. Cl.
CPC ...
34-5 ;
Abstract
Water-soluble, substantially anhydrous materials such as anhydrous aspirin salt and anhydrous calcium aspirin salt, stable to hydrolysis, are prepared by subjecting a freeze-dried water-soluble material containing molecularly bound water which is susceptible to hydrolysis to a vacuum of 10 microns or less Hg to remove the molecularly bound water and condensing the removed water on a condenser below -50.degree. C.