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:
Jul. 06, 2021
Filed:
Oct. 29, 2019
Applicant:
National Cheng Kung University, Tainan, TW;
Inventors:
Chen-Kuei Chung, Tainan, TW;
Chung-Yu Yu, Tainan, TW;
Assignee:
National Cheng Kung University, Tainan, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B43L 1/10 (2006.01); G06F 3/0354 (2013.01); B43K 7/00 (2006.01);
U.S. Cl.
CPC ...
G06F 3/03545 (2013.01); B43K 7/005 (2013.01);
Abstract
The present invention discloses a using method of a rewritable board. It comprises applying or removing a fluid on the rewritable board for writing repeatedly, wherein the rewritable board is an aluminum based material sequentially having a porous aluminum oxide layer and a metal layer thereon, and wherein the porous aluminum oxide layer has a porosity ranging from 10% to 80%.