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:
May. 24, 1977
Filed:
Jun. 30, 1975
Applicant:
Inventors:
Wayne A Pletcher, Roseville, MN (US);
Russell L Vermillion, Hastings, MN (US);
Assignee:
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
428480 ; 428458 ; 428483 ; 428900 ; 427128 ; 427131 ; 260 / ; 252 6254 ;
Abstract
Magnetic recording tape, the binder of which is a segmented copolyester of crystallizable ester units ##STR1## and amorphous ester units ##STR2## where R.sub.1 may be the divalent radical of adipic acid, R.sub.2 may be the divalent radical of 1,4-cyclohexanedimethanol, R.sub.3 may be R.sub.1 or the divalent radical of C.sub.36 dimer acid, R.sub.4 may be R.sub.2 or the divalent radical of a polyetherglycol of 200-4000 molecular weight.