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. 03, 2012
Filed:
Jun. 28, 2007
Masato Hasegawa, Itami, JP;
Akihito Fujii, Osaka, JP;
Masato Hasegawa, Itami, JP;
Akihito Fujii, Osaka, JP;
Sumitomo Electric Industries, Ltd., Osaka-Shi, JP;
Abstract
A lower periphery constraint portion and an upper periphery constraint portion for molding the periphery of a lens as well as a mirror-finished optical molding surface and another mirror-finished optical molding surface are formed on a lower mold body and an upper mold body of a mold respectively. The upper periphery constraint portion and the lower periphery constraint portion are so formed as to have prescribed thicknesses α1 and α2 in a pressure axis direction respectively. A periphery nonconstraint portion not constraining ceramics when molding a ceramics material is provided between the lower mold body and the upper mold body. Thus, a ceramics molded component or the like is prevented from breakage and can be easily detached from the mold, so that the same can be more homogeneously densified.