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. 29, 1991
Filed:
May. 01, 1989
Applicant:
Inventor:
David S Soane, Piedmont, CA (US);
Assignee:
Soane Technologies, Inc., Livermore, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ; C08F / ;
U.S. Cl.
CPC ...
156245 ; 1562755 ; 1562757 ; 156294 ; 2042 / ; 264-14 ; 264-23 ; 264 22 ; 264 25 ; 264319 ; 522-3 ;
Abstract
A gel casting method and apparatus are used to cause a pre-gelled liquid mixture to gel sequentially in a given travelling direction, allowing still-liquid material to flow to the gelling front, replacing volume lost due to shrinkage during the change of state from a liquid to a gel. The differential gelling method provides stress-free gels free of voids common to highly stressed gels, and the method is applicable to column and slab gels, and particularly to capillary columns and very thin slab gels.