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:
Apr. 09, 2024
Filed:
Oct. 12, 2020
Denso Corporation, Kariya, JP;
Kazutoshi Kodama, Kariya, JP;
DENSO CORPORATION, Kariya, JP;
Abstract
There is provided a method of producing a gas sensor element capable of detecting a concentration of specific ions based on a limiting current passing between a first electrode and a second electrode according to a concentration difference of the specific ions. The method includes a temperature raising step, a current measuring step and a control step. In the temperature raising step, a heater is energized to raise temperature of a solid electrolyte. In the current measuring step, a voltage is applied across the first and second electrodes and to measure a limiting current. In the control step, a part of a diffusion resistance layer is removed from the gas sensor element by using an ultrashort pulsed laser to control a diffusion length that is a length of an introduction path to maintain the limiting current to be within a final standard range.