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:
Jun. 29, 2021
Filed:
Jan. 25, 2017
Ngk Insulators, Ltd., Nagoya, JP;
Rui Sakaguchi, Nagoya, JP;
NGK INSULATORS, LTD., Nagoya, JP;
Abstract
A heater unit includes a heaterhaving first bend portions(to) and second bend portions(to). The first bend portionsare turns present in a maximum-temperature area (first area) where the maximum temperature is reached during heating among areaswhere the turns have a narrower pitch and having apexes facing each other in the short-length direction (left-right direction) of a ceramic substrate. The second bend portionsare turns present in areaswhere the turns have a wider pitch and having apexes facing each other in the short-length direction. The distance X[mm] between the first bend portionsfacing each other is larger than the distance X[mm] between the second bend portionsfacing each other.