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:
Mar. 25, 2003
Filed:
Oct. 13, 2000
Applicant:
Inventor:
Roeland F. Papen, Guilford, CT (US);
Assignee:
Packard Instrument Company, Downers Grove, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F23D 1/450 ;
U.S. Cl.
CPC ...
F23D 1/450 ;
Abstract
A method and apparatus for cleaning the interior of capillary tubes used to dispense 1 to 100 micron diameter liquid droplets by a piezoelectric transducer surrounding each capillary tube. Magnetic particles are aspirated into the capillary tubes and moved by an exterior magnet to cause deposits on the interior walls to be dislodged and subsequently discharged from the capillary tube. In a preferred embodiment, the magnetic particles are coated with a material capable of binding such deposits, e.g., DNA, RNA, and the like.