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:
Jan. 12, 2021
Filed:
Jun. 03, 2016
Shimadzu Corporation, Kyoto, JP;
Shinya Wakuda, Kyoto, JP;
SHIMADZU CORPORATION, Kyoto, JP;
Abstract
An infrared spectrophotometer uses a configuration that allows notification of the appropriate replacement time for an electric heater. The infrared spectrophotometer is provided with an electric heater, a PWM control circuit, a state detection unit, and a notification processing unit. The electric heateris a light source that irradiates infrared radiation. The PWM control circuitcarries out PWM control so that the current supplied to the electric heateris constant. The state detection unitdetects the state of the electric heateron the basis of the variation in the duty cycle during PWM control. The notification processing unitreports the result of the detection by the state detection unit
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile