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:
Aug. 20, 2024
Filed:
Mar. 13, 2020
Ngk Insulators, Ltd., Nagoya, JP;
Morimichi Watanabe, Nagoya, JP;
Kei Sato, Tokai, JP;
Kiyoshi Matsushima, Nagoya, JP;
Takahiro Maeda, Ichinomiya, JP;
Jun Yoshikawa, Nagoya, JP;
Tsutomu Nanataki, Toyoake, JP;
NGK INSULATORS, LTD., Nagoya, JP;
Abstract
An oriented ceramic sintered body production method includes (a) a step of preparing a ceramic compact before firing into an oriented ceramic sintered body; and (b) a step of obtaining an oriented ceramic sintered body by sandwiching the ceramic compact between a pair of releasing sheets, placing the ceramic compact and the releasing sheets in a hot press firing furnace, and hot press firing the ceramic compact while applying a pressure by a pair of punches through the pair of releasing sheets, wherein each of the releasing sheets is a releasing sheet such that, after the releasing sheet is sandwiched between PET films, is then placed and vacuum-packed on a stainless steel sheet, and is isostatically pressed at 200 kg/cm, a surface of the releasing sheet on the side opposite from the stainless steel sheet has a profile curve with a total profile height Pt of 0.8 μm or less.