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:
Oct. 20, 2026
Filed:
Dec. 27, 2024
Hitachi High-tech Corporation, Tokyo, JP;
Hideo Morishita, Tokyo, JP;
Takashi Ohshima, Tokyo, JP;
Tatsuro Ide, Tokyo, JP;
Naohiro Kohmu, Tokyo, JP;
Toshihide Agemura, Tokyo, JP;
Yoichi Ose, Tokyo, JP;
Junichi Katane, Tokyo, JP;
HITACHI HIGH-TECH CORPORATION, Tokyo, JP;
Abstract
Examples include a photoelectric film that emits electrons by irradiation of an excitation light, an extraction electrode for extracting emitted electrons, and a differential exhaust diaphragm through which extracted electrons pass. A control unit controls an electric field formed in relation to the extraction electrode to make the extracted electrons pass through the differential exhaust diaphragm both in a first case in which the excitation light is irradiated to a first position of the photoelectric film, and in a second case in which the excitation light is irradiated to a second position different from the first position of the photoelectric film.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile