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:
Jul. 10, 2001
Filed:
Jun. 14, 1999
Menicon Co., Ltd., Nagoya, JP;
Abstract
A device comprises a lower die,composed of a lower die base portion and a lower die columnar portion of which tip surface is formed with a lower die molding surface corresponding to one surface of an ocular lens material; an upper die,composed of an upper die base portion that is fitted into an upper portion of a hollow hole of the cylindrical main body for parting the hollow hole into two, forming an intermediate chamber,between itself and the lower die base portion into which the monomer composition is filled, and forming an exterior accumulating chamber,on a side of an upper aperture of the hollow hole into which the monomer composition is accumulated, and an upper die columnar portion of which tip surface is formed with an upper die molding surface corresponding to another surface of the ocular lens material, wherein a molding cavity,having a communicating portion,is formed between the upper die molding surface and the lower die molding surface; and not less than three piercing holes,provided as to pierce the upper die base portion of the upper die in a vertical direction and as to be positioned at equal intervals around the upper die columnar portion. Simplification of the die arrangement of the molding device for molding ocular lens materials through polymerization in a mold can be effectively achieved, and superior transcriptability and uniform lens shape can be realized.