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:
Jan. 11, 1977
Filed:
Mar. 11, 1976
Applicant:
Inventors:
Karl David Sears, Shelton, WA (US);
Franklin Willard Herrick, Shelton, WA (US);
Assignee:
International Telephone and Telegraph Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C05F / ;
U.S. Cl.
CPC ...
71 25 ; 71 6 / ; 162 16 ; 201-25 ;
Abstract
Spent sulfite liquor is converted into a nitrogen containing water insoluble product useful as a soil conditioner and fertilizer. The spent sulfite liquor is heated at a temperature of 170.degree. to 260.degree. C to form a partially pyrolyzed water insoluble material and the water insoluble material is then reacted with ammonia at a temperature of 170.degree. to 260.degree. C.