US Patent 7438857 Liquid handling tool having porous plunger

Patent 7438857 was granted and assigned to Protedyne Corporation on October, 2008 by the United States Patent and Trademark Office.

Overview Structured Data Issues Contributors Activity

Is a

Patent

Patent attributes

Current Assignee

Protedyne Corporation

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

74388570

Patent Inventor Names

Peter Massaro0

Date of Patent

October 21, 2008

Patent Application Number

106224140

Date Filed

July 18, 2003

Patent Citations Received

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US Patent 12085583 Systems and methods for multi-analysis

Patent Primary Examiner

Alfred Worden

Patent abstract

A robotically manipulable sample handling tool, such as a colony picking head or robotic pipetting tool, includes needles arranged on the tool. Actuators are associated with each needle to control flow for the needle. A plurality of plungers are each associated with a needle, and movement of the plungers can actuate a corresponding needle. Each of the plungers has a passageway that may be opened or closed, e.g., to move the corresponding needle and/or draw fluid into/expel fluid from the needle when the plunger is moved in the tool body. The actuators are arranged so that plunger passageways may be individually controlled by a controller.