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. 26, 2007
Filed:
Jun. 20, 2003
Takeshi Nakamura, Tokyo, JP;
Toshinari Taira, Tokyo, JP;
Kenta Wada, Tokyo, JP;
Katsuya Otomo, Tokyo, JP;
Takeshi Nakamura, Tokyo, JP;
Toshinari Taira, Tokyo, JP;
Kenta Wada, Tokyo, JP;
Katsuya Otomo, Tokyo, JP;
Chugai Seiyaku Kabushiki Kaisha, Tokyo, JP;
Abstract
In manufacturing an aspherical seamless capsule comprises, firstly, a seamless capsule Chaving a filler encapsulated with a shell membrane is provided, then it is dried in a dryeruntil a predetermined percentage content of solvent in the shell membrane reaches a predetermined value. Subsequently, the seamless capsule is heated by a heaterso that the shell material may get to a semi-sol state. Then, the heated seamless capsule is formed into an aspherical shape using a forming machine such as a compression molding machine. Because the spherical seamless capsule has a shell membrane which is dried to get semi-sol so that it may have a reduced elasticity and a shortened stress relaxation time, the capsule can be formed in a short time and suppressed from restoring to the original spherical shape. The semi-sol shell membrane has almost no change in properties, and so allows easiness in temperature control for treatment. The aspherical capsule after being formed does not or rarely need drying, resulting in wrinkle resistance and little variation in shape brought on the surface of the shell membrane.