Patent · US Active

Composite magnetic recording medium

US8800322B1 · kind B1 · utility

46Cited by

26References

4Claims

0Family size

Assignee

WD MEDIA, LLC · US

Inventors

Richie Yuan Lin Chan · Air Itam, MY
Magenthiran Verapatran · Sungai Petani, MY
Mohamad Faisal Azmi · Serdang, MY
Beehuah Ong · Butterworth, MY

Key dates

Filing date	Nov 12, 2012
Grant date	Aug 12, 2014
Priority date	—
Expiry date	Nov 12, 2032

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC03B27/062
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A method for manufacturing glass hard disk substrates comprises annealing and then tempering previously formed glass hard disk substrates. The annealed and tempered glass hard disk substrates have improved strength and stress resistance without chemical treatments.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.