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. 04, 2023
Filed:
May. 20, 2021
Applicant:
Seiko Epson Corporation, Toyko, JP;
Inventors:
Yasuaki Hamada, Chino, JP;
Shunsuke Yoshida, Shiojiri, JP;
Yasuhiro Itayama, Kai, JP;
Toshihiro Shimizu, Fujimi, JP;
Masao Nakayama, Shiojiri, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/045 (2006.01); H10N 30/87 (2023.01); H10N 30/853 (2023.01);
U.S. Cl.
CPC ...
B41J 2/04588 (2013.01); B41J 2/04581 (2013.01); H10N 30/87 (2023.02); H10N 30/8554 (2023.02);
Abstract
An electric current based on electric charge produced on the piezoelectric body changes by going through a first path, a second path, a third path, and a fourth path in this order. On the first path, the electric current becomes larger as the voltage becomes higher. On the second path, the electric current becomes smaller as the voltage becomes higher. On the third path, the electric current becomes larger as the voltage becomes higher. On the fourth path, the electric current becomes smaller as the voltage becomes higher.