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. 23, 1996
Filed:
Feb. 08, 1994
Applicant:
Inventors:
James R Smith, Blackford, GB;
Peter L Timms, Bristol, GB;
Assignee:
The BOC Group plc, Windlesham, US;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01B / ; C01B / ; B01D / ;
U.S. Cl.
CPC ...
423210 ; 423299 ; 423322 ; 117954 ; 117955 ;
Abstract
A method for the treatment of a stream of exhaust gases including phosphine in which the stream is heated to a sufficiently high temperature to decompose the phosphine to phosphorus vapor and the stream is then passed into a reactor containing calcium oxide heated to above about 100.degree. C. An oxygen containing stream is also passed into the reactor.