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. 09, 1995
Filed:
Apr. 23, 1993
Vincent W Nehring, Stillwater, MN (US);
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Abstract
An electrically non-conductive Al.sub.2 O.sub.3 --TiC thin film computer head substrate, exhibiting improved edge retention during precision machining, is formed from a mixture of Al.sub.2 O.sub.3 and TiC, where the TiC content in the final microstructure is less than about 18 weight percent and which is produced from TiC having a surface to volume mean diameter of about 2-10 micrometers. A thin film computer head substrate made from such a material, and sliders incorporating the substrate, exhibit significantly improved surface stability and diceability due to the exclusion of third-phase thermally-elastically mismatched dispersoids.