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:
Apr. 18, 2000
Filed:
Jun. 30, 1998
Mikhail Yuriy Dubrovskiy, San Mateo, CA (US);
Yuri Igor Markevitch, San Jose, CA (US);
Siloe Flores Saldivar, San Jose, CA (US);
Cornelius Vladimir Sutu, Pittsburg, CA (US);
Other;
Abstract
The invention presents a method for conditioning and texturing of lapping plate surfaces used in high precision lapping, the conditioning and texturing is achieved without the use of free abrasive particles and slurries through use of a conditioning ring having a hard bound abrasive particle layer. The conditioning ring is contacted with the lapping plate surface, both rotating in the same direction but at different RPMs resulting in grooved microprofiles of the lapping plate surface. The invention provides a lapping process using the conditioned and textured lapping plate surface along with free abrasive particles carried in the grooves in combination with glycols and citrates for ABS generation.