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:
May. 26, 1981
Filed:
Apr. 09, 1979
Niilo Kaartinen, 21620 Kuusisto, FI;
Other;
Abstract
The application discloses a procedure appropriate in the manipulation especially of small batches of liquid and an apparatus for carrying out the procedure, these being based on the use of valves closable by freezing and openable with the aid of electrical heating elements. The apparatus comprises an integral system composed of volumes and of conduits connecting these, wherein the conduits have been provided with said freezable valves. The transfer of liquids within the sytem is accomplished by means of control signals directed to the valve heating elements. As valve heating elements film resistances incorporated in plate-like components are employed in such manner that one component establishes a plurality of valves. At the same time these valves are connected to a common refrigerator. The components afford the possibility to incorporate in the apparatus a great number of closable appropriate for the storage and treatment of batches of liquid, whereby the apparatus may be employed in the capacity of an electronically controllable device for analysis, determination and identification operating without moving mechanical parts.