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:
Feb. 07, 1978
Filed:
Mar. 23, 1977
Applicant:
Inventors:
Assignee:
Kao Soap Co., Ltd., Tokyo, JA;
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; B05B / ; B01J / ;
U.S. Cl.
CPC ...
23284 ; 23285 ; 23260 ; 23283 ; 2605 / ; 239428 ; 2394275 ; 239431 ; 261115 ; 261116 ;
Abstract
A sulfonation apparatus comprising a gas feeder for feeding a first stream of SO.sub.3 -containing gas and a second stream of inert gas into contact with an annular film of sulfonatable material.