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:
Aug. 09, 1988
Filed:
Jul. 31, 1987
Applicant:
Inventors:
Raymond D von Alven, San Rafael, CA (US);
Craig R Davis, San Pablo, CA (US);
Assignee:
Bio-Rad Laboratories, Inc., Hercules, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; G01N / ;
U.S. Cl.
CPC ...
428156 ; 428167 ; 428174 ; 428179 ; 428182 ; 2041828 ; 2042 / ;
Abstract
Wedge spacers for forming slab gels of increasing cross section are manufactured from strips of thermoplastic material by impressing corrugations into the strips which run lengthwise from one end of each strip to a point along the strip between the two ends. The corrugations decrease in depth from a maximum at the strip end down to flatness at their terminus on the strip face. The forming technique imparts a high degree of reproducibility to the spacers, while still insuring a tight seal.