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. 31, 2000
Filed:
Oct. 31, 1996
Applicant:
Inventor:
Daniel P Hagewiesche, Oakland, CA (US);
Assignee:
Chevron Chemical Company, San Francisco, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B05D / ; B05D / ; B05D / ;
U.S. Cl.
CPC ...
427142 ; 427140 ; 427239 ; 4272481 ; 42725526 ; 4272554 ; 427335 ; 427337 ; 427405 ; 4274197 ;
Abstract
A process for producing a metallic protective layer whereby a metal-containing plating, cladding, paint or other coating is applied to at least a portion of a reactor system and then contacted with a gaseous stream containing hydrocarbons, such as impure hydrogen, thereby producing a continuous and adherent metallic protective layer. The gaseous stream preferably comprises hydrogen, which may be recycled. A preferred embodiment of the invention is directed to touch-up procedures where a portion of an already protected reactor system is replaced or rewelded and the protective layer is formed as the replaced portion is brought on-stream.