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:
May. 04, 1976
Filed:
Aug. 02, 1974
Applicant:
Inventors:
Toshko Sokolov Toshkov, Sofia, BG;
Nikola Russev Gospodinov, Sofia, BG;
Evstati Penchev Vidimski, Sofia, BG;
Assignee:
DSO'Pharmachim', Sofia, BG;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08B / ;
U.S. Cl.
CPC ...
260212 ;
Abstract
Method of producing microcrystalline cellulose. Cellulose containing at least about 92% alpha-cellulose and 5 - 6.5% beta cellulose, having a solubility in 5% sodium hydroxide of about 2 to 4% and a viscosity 110 to 180 mP is acid hydrolyzed and the resulting crystalline mass is de-aggregated, the acid hydrolysis being performed at the same time as the chemical de-aggregating of the material. The de-aggregated material may be bleached and cleaned if desired.