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:
Dec. 19, 2000
Filed:
Mar. 19, 1999
Yukiko Ikeda, Ibaraki-ken, JP;
Yoshishige Endo, Tsuchiura, JP;
Yasuhiro Yoshimura, Ibaraki-ken, JP;
Takao Terayama, Ushiku, JP;
Kenji Yasuda, Tokyo, JP;
Toshinari Sakurai, Hitachinaka, JP;
Tetsuo Yokoyama, Tokyo, JP;
Takanori Aono, Ibaraki-ken, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
Composite particles formed from resin particles and silica particles (amount of silica particles: 0.2 to 10 wt. % on the basis of the resin particles) in an apparatus for formation of composite particles are placed in a PTFE mold and heat treated to weld the resin particles to one another, thereby forming a structural element, which is dipped in an ethyl silicate solution containing monodispersed silica particles, then taken out of the solution and subjected to further heat treatment to form an ultimate structural element, which is sealed in a tip case, whereby a tip can be produced at a low cost and used to separate nucleic acid from a liquid sample for a short time at a high recovery rate without any defects such as breaking, etc.