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:
Apr. 20, 1976
Filed:
Feb. 25, 1974
Applicant:
Inventor:
Joseph A Delap, Bartlesville, OK (US);
Assignee:
Phillips Petroleum Company, Bartlesville, OK (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ; B01J / ; C01B / ;
U.S. Cl.
CPC ...
252454 ; 252451 ; 252458 ; 423335 ;
Abstract
A method of converting a hydrogel to a xerogel by passing a hydrogel and an organic liquid in which water is soluble in countercurrent contact to remove the water from the hydrogel. The solution of organic liquid and water which is formed is allowed to separate into two phases and the organic liquid is recycled back into contact with the hydrogel.