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. 14, 1986
Filed:
Jan. 18, 1985
Applicant:
Inventors:
Frederick D Austin, Weybridge, GB;
Peter Watson, Epsom, GB;
Assignee:
The British Petroleum Company p.l.c., London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05D / ;
U.S. Cl.
CPC ...
4273764 ; 427239 ; 4273765 ; 4273977 ;
Abstract
Silica may be deposited on metal surfaces e.g. on heat exchanger surfaces to reduce undesirable deposits by the following aqueous process. Finely divided moist silicic acid of defined particle size is mixed with hot (e.g. at least 98.5.degree. C.) pure water for not more than 1 hour. The mixture is subjected to depolymerization by heating at specified pH so as to depolymerize substantially all the silica. The resulting aqueous silica is then passed over the surface to be coated at temperature above 80.degree. C. so as to deposit a hard bound silica coating.