[특허]Multi-sample filtration plate assembly

Multi-sample filtration plate assembly 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B01L-011/00 C12M-001/12 C12M-001/20
출원번호	US-0555139 (1990-07-18)
발명자 / 주소	Fernwood George G. (Larkspur CA) Penaluna William A. (Pinole CA) Geisselsoder Janet (Kensington CA)
출원인 / 주소	Bio-Rad Laboratories, Inc. (Hercules CA 02)
인용정보	피인용 횟수 : 77 인용 특허 : 0

초록 ▼

A plate assembly for performing multiple filtrations with the use of a vacuum offers advantages for small samples due to the construction of its component plates, which include an upper plate with apertures forming sample wells, a membrane sheet forming the floor of each well, a collection plate with individual wells underneath the membrane sheet, aligned with the upper plate apertures, and a drop guide plate between the membrane sheet and the collection plate to guide and force small quantities of liquid downward from the membrane into the collection wells. The arrangement permits extremely small quantities of species on the membrane to be drawn into the collection wells without dilution, and avoids cross contamination between collection wells.

대표청구항 ▼

A plate assembly for performing filtration on a plurality of samples, said assembly comprising: an upper plate having a plurality of apertures; a single sheet of porous material of sufficient dimensions to span the entire plurality of said apertures; a rigid single-piece drop guide plate with a plurality of tubes incorporated therein, said tubes extending through said drop guide plate and aligned with said apertures, each said tube having an inner diameter of less than about 0.1 inch and terminating in a raised land of diameter exceeding the diameter of each of said apertures; a drop guide support plate having a recess to receive said drop guide plate, said recess surrounded by a peripheral shoulder, said drop guide support plate having a plurality of passages therethrough, one aligned with each of said apertures, to permit said tubes of said drop guide plate to extend therethrough; clamping means for clamping said upper plate to said peripheral shoulder of said drop guide support plate such that said drop guide support plate will force said drop guide plate against the underside of said upper plate and thereby force said raised lands against regions on the underside of said upper plate surrounding each of said apertures; a lower plate having a plurality of wells aligned with said apertures and said tubes; said upper plate, drop guide plate and lower plate constructed to fit together in a manner permitting the placement of one end of each of said tubes against the underside of said porous membrane at the closed end of one of said apertures with the other end of each of said tubes extending into the interior of one of said wells; and means for drawing a vacuum through said upper plate, drop guide plate and lower plate when so joined, to draw liquid from said apertures through said tubes into said wells.

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
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연합인증

Multi-sample filtration plate assembly 원문보기

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Multi-sample filtration plate assembly 원문보기

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연구과제 타임라인

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이 특허를 인용한 특허 (77)

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