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:
Jun. 04, 1996
Filed:
Oct. 21, 1993
Applicant:
Inventors:
Laurence A Fishel, East Lansing, MI (US);
Barnett Rosenberg, Holt, MI (US);
David A Juckett, East Lansing, MI (US);
Assignee:
Other;
Primary Examiner:
Int. Cl.
CPC ...
C08L / ;
U.S. Cl.
CPC ...
264104 ; 204455 ; 204605 ; 524 56 ; 524 57 ; 524 58 ;
Abstract
Described is a method of preparing polyacrylamide gel containing capillary tube wherein acrylamide is polymerized from a liquid to a gel within the tube, the improvement comprising the steps of: a) after the polymerization, annealing the gel inside the tube by cycling the gel/tube at least once in a temperature range from 20.degree. C. to a temperature not to exceed about 75.degree. C. and back to ambient; and b) recovering the stress released gel-filled tube. Preferably, the polymerization commences at the middle of the tube and commences toward the extremities of the tube.