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:
Nov. 19, 1991
Filed:
Jan. 24, 1990
Applicant:
Inventor:
J Eric Hamann, Spencerport, NY (US);
Assignee:
Eastman Kodak Company, Rochester, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ; G01N / ;
U.S. Cl.
CPC ...
364496 ; 364497 ; 436 46 ;
Abstract
A method and apparatus for detecting an erroneous pre-spotting of liquid onto a test element in an analyzer. The invention utilizes a wetness detector and calculates the estimated second derivative of the R-C time decay curve produced by such a detector, to determine if a sudden increase in a slope exceeds more than a threshold value for two consecutive points. The threshold value is picked so as to exceed sudden increases that can be created by noise in the system.