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. 23, 1981
Filed:
Aug. 09, 1979
Applicant:
Inventors:
Chih C Wang, Hightstown, NJ (US);
Lincoln Ekstrom, Princeton, NJ (US);
Thomas C Lausman, Cranbury, NJ (US);
Henry Wielicki, Wyndmoor, PA (US);
Assignee:
RCA Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; G11B / ;
U.S. Cl.
CPC ...
369286 ; 346137 ; 3581285 ; 428 64 ; 428447 ; 428 65 ; 369126 ; 369276 ;
Abstract
Molecular distillation of methyl alkyl siloxanes of the formula ##STR1## wherein R.sub.1 and R.sub.2 are alkyl groups of 4-20 carbon atoms and m and p are integers to produce a distillate having a molecular weight fraction wherein the sum of m and p is about 4, produces an improved lubricant for the video disc, a lubricant that is stable to long term storage and to wide variations in temperature and relative humidity.