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:
Aug. 18, 2009
Filed:
Dec. 06, 2006
Applicant:
Charles W. Ragsdale, Concord, CA (US);
Inventor:
Charles W. Ragsdale, Concord, CA (US);
Assignee:
Bio-Rad Laboratories, Inc., Hercules, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 27/08 (2006.01); A61B 18/04 (2006.01); C12M 1/42 (2006.01);
U.S. Cl.
CPC ...
Abstract
Systems and methods of measuring resistances of samples to be electroporated and utilizing the measured resistances in the electroporation are provided. During an electrical pulse sent to the sample, a time and a corresponding voltage drop on a known capacitance is measured to determine the sample resistance. A constant voltage may be assumed, and the voltage drop across a known resistance in series with the sample resistance is used to determine the sample resistance. Based on the value of the sample resistance, an electrical pulse may be altered by changing a value of a parallel resistance.