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. 08, 1995
Filed:
Mar. 30, 1993
Applicant:
Inventor:
Donald W Schoendorfer, Santa Ana, CA (US);
Assignee:
Sudor Partners, Santa Ana, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61B / ;
U.S. Cl.
CPC ...
128632 ; 128636 ; 128760 ; 128771 ;
Abstract
The invention is an improved method and apparatus for collecting analytes on a dermal patch, where the patch controls the ionization state of the analyte. This can be accomplished by delivering electricity to the patch or by a buffer or other means for controlling the pH of fluids entering the patch. Analytes in perspiration can be concentrated on the patch without the occurrence of significant back-diffusion of the analytes.
Published as: