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:
Jun. 18, 2024
Filed:
Mar. 25, 2019
Corning Incorporated, Corning, NY (US);
Brandon Allen Bazemore, Concord, NC (US);
Jun Hou, Painted Post, NY (US);
Yuhui Jin, Painted Post, NY (US);
Eungsik Park, Yorba Linda, CA (US);
Tammy Lynn Petriwsky, Elmira, NY (US);
Corning Incorporated, Corning, NY (US);
Abstract
A method for increasing the tactile feel of a glass-ceramic article includes (a) performing a first etching of a surface of the glass-ceramic article with a first etchant to create a plurality of features on the surface, wherein the first etchant comprises hydrofluoric acid and an inorganic fluoride salt, and the plurality of features comprises protrusions and recesses and (b) performing a second etching of the surface with a second etchant different from the first etchant to enlarge a distance between adjacent features of a same type, wherein the second etching occurs after the first etching, after the second etching an average distance between adjacent features of a same type is in a range from 0.5 μm to 20 μm and a density of features of the same type is in a range from 9,000 to 25,000 features/mm, and a tactile feel of the surface after the second etching is greater than the tactile feel of the surface before the first etching.