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:
Sep. 07, 1976
Filed:
Feb. 25, 1975
Applicant:
Inventors:
Hristo Dimitrov Vassilev, Razgrad, BG;
Simeon Assenov Zahariev, Razgrad, BG;
Danail Yovchev Donev, Razgrad, BG;
Assignee:
DSO 'Pharmachim, , BG;
Primary Examiner:
Int. Cl.
CPC ...
B01J / ;
U.S. Cl.
CPC ...
2041 / ;
Abstract
This invention provides method for obtaining tetracycline hydrochloride through interaction of a suspension consisting of tetracycline base in an organic solvent with concentrated hydrochloric acid, wherein the solution containing tetracycline base and hydrochloric acid is treated by high-frequency oscillations.