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:
Sep. 13, 2022
Filed:
Apr. 10, 2019
Cdgm Glass Co., Ltd, Sichuan, CN;
CDGM GLASS CO., LTD, Chengdu, CN;
Abstract
A glass composition with high Young's modulus and low density. The glass composition includes the following components by mole percentage: 52-70% of SiO, 5-10% of BO, 5-15% of AlO, 8-20% of CaO and 5-18% of MgO. The glass composition uses common chemical raw materials. By reasonably designing the contents of each component, the glass composition has high Young's modulus, low density, good heat resistance and chemical stability, relatively low high-temperature viscosity, and low raw material cost. The glass composition is easy to eliminate stripes and bubbles during manufacturing, and is suitable for hard disk substrate manufacturing other fields that need high Young's modulus materials.