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. 01, 1995
Filed:
Dec. 22, 1993
Applicant:
Inventors:
Eugene F Yarkosky, Milford, CT (US);
Deborah Friday, Rocky Hill, CT (US);
Patricia A Cacciatore, Prospect, CT (US);
Assignee:
Enthone-Omi, Inc., West Haven, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F / ;
U.S. Cl.
CPC ...
427131 ; 427132 ; 427406 ; 4274431 ; 428900 ; 428928 ; 428611 ;
Abstract
A method is provided for producing paramagnetic electroless nickel-phosphorus (ENP) coatings on zincated aluminum substrates using an ENP bath containing antimony and/or cadmium ions and/or an adjusting operating pH, which coated substrates have enhanced retention of their paramagnetic properties after being exposed to elevated temperatures on the order of 310.degree. C. as, for example, when the ENP coated substrate is further treated by sputtering operations to form another metal layer on the coated substrate to produce magnetic memory disks.