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:
Jul. 04, 1989
Filed:
Dec. 27, 1985
Applicant:
Inventors:
Samuel L Bean, Jamesville, NY (US);
Mark D Dulik, Camillus, NY (US);
Robert J Wilson, Baldwinsville, NY (US);
Assignee:
HMC Patents Holding Co., Inc., Hampton, NH (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01B / ; C01D / ;
U.S. Cl.
CPC ...
423519 ; 423202 ; 4235 / ; 2329 / ; 2330 / ; 2330 / ;
Abstract
An improved process for the manufacture of sodium metabisulfite is provided. In this process, the chemical reaction forming sodium bisulfite solution is carried out separately from the crystallization of sodium metabisulfite. The crystallization step is carried out without chemical alteration and without pH adjustment.