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:
Sep. 16, 2025
Filed:
Aug. 28, 2020
Teijin Pharma Limited, Tokyo, JP;
Takuya Nanjo, Tokyo, JP;
Yuki Kawase, Tokyo, JP;
Toshihiro Sato, Onomichi, JP;
Kazunori Takahashi, Onomichi, JP;
Teijin Pharma Limited, Tokyo, JP;
Abstract
A phototherapy deviceincludes a laser light sourcefor emitting laser light at a target portion T, a limit switchfor detecting an approach of the laser light sourceto a target portion T up to a predetermined distance and outputting a proximity signal, and an optical sensorsfor detecting a distance to the target portion T and outputting a distance signal S corresponding to the distance and is configured so that a reference value Lis set based on the distance signal S detected after the proximity signal is detected and emission of laser light by the laser light sourceis permitted in accordance with an amount of fluctuation of the distance signal S with respect to the reference value L