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:
May. 19, 2026
Filed:
Aug. 17, 2022
Korea Institute of Science and Technology, Seoul, KR;
Hyun Cheol Song, Seoul, KR;
Chong Yun Kang, Seoul, KR;
Sung Hoon Hur, Seoul, KR;
Seung Hyub Baek, Seoul, KR;
Seong Keun Kim, Seoul, KR;
Ji Won Choi, Seoul, KR;
Jung Ho Yoon, Seoul, KR;
Hyun Soo Kim, Seoul, KR;
Korea Institute of Science and Technology, Seoul, KR;
Abstract
Provided is an apparatus for generating direct current using continuous polarization change of piezoelectric materials. For example, a piezoelectric direct current generator includes a first electrode, a polarized piezoelectric material layer disposed on a first surface of the first electrode, and a second electrode disposed on a surface opposite to the first electrode and coupled to move along the piezoelectric material layer while pressing the piezoelectric material layer.