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. 02, 2025
Filed:
Nov. 12, 2021
National University Corporation Kobe University, Kobe, JP;
Bunkoukeiki Co., Ltd., Hachioji, JP;
Chikahiro Miyake, Kobe, JP;
Takayuki Sohtome, Hachioji, JP;
National University Corporation Kobe University, Hyogo, JP;
Bunkoukeiki Co., Ltd., Tokyo, JP;
Abstract
The present invention relates to an improved technology for a device that identifies and diagnoses an environmental stress state of plants. A control circuitcontrols a measurement light sourcesuch that a second measurement light MLhas higher power than a first measurement light MLand the first measurement light MLand the second measurement light MLbecome opposite-phase rectangular waves, and further controls the measurement light sourcesuch that the first measurement light MLand the second measurement light MLare output in synchronization to form the first measurement light MLand the second measurement light MLinto a quasi-single composite rectangular wave measurement light MLof 5 kHz to 30 kHz. A transmitted light detectordetects the composite rectangular wave measurement light MLtransmitted through a plant sample S as a composite rectangular wave transmitted light TL. An analysis circuitcalculates a light absorption difference by utilizing the composite rectangular wave transmitted light TL, and calculates Y(ND) which is an oxidized state of P700 as a ROS marker utilizing the light absorption difference, and diagnoses an environmental stress state of plants by utilizing the ROS marker.