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. 15, 1985
Filed:
Dec. 07, 1983
Applicant:
Inventors:
Jesse M Carr, Jr, Washington, NC (US);
Raymond E Sheler, Washington, NC (US);
Frank J Richards, Aurora, NC (US);
Eric Kelder, Washington, NC (US);
Assignee:
Texasgulf Inc., Stamford, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01B / ;
U.S. Cl.
CPC ...
210777 ; 4233 / ;
Abstract
Filtration of wet process superphosphoric acid by vacuum filtration is greatly enhanced by the use of a filter aid having a statistically selected distribution of particle sizes.