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:
Dec. 30, 2025
Filed:
Apr. 15, 2019
Shenzhen Upcera Dental Technology Co., Ltd., Guangdong, CN;
Lingling He, Benxi, CN;
Guoyi Song, Benxi, CN;
Cheng Hou, Benxi, CN;
Chengwei Han, Benxi, CN;
Zhongliang Zhao, Benxi, CN;
Jialing Li, Benxi, CN;
Shenzhen Upcera Dental Technology Co., Ltd., Guangdong, CN;
Abstract
A pre-sintered porcelain block for dental restoration; the pre-sintered porcelain block does not contain crystal phases and has a Vickers hardness of 0.5-2 GPa. Due to a hardness which is significantly lower than that of the porcelain block containing a lithium metasilicate crystal phase, the pre-sintered porcelain block may be processed by using dry machining and can simultaneously be processed by using wet machining when being mechanically processed into a dental restoration shape.