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:
Jul. 27, 1982
Filed:
Jun. 02, 1980
Applicant:
Inventor:
Robert A Yoshida, San Diego, CA (US);
Assignee:
Syva Company, Palo Alto, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01W / ; C12W / ;
U.S. Cl.
CPC ...
435-7 ; 435184 ; 435810 ; 2323 / ; 424 12 ;
Abstract
An improved method is provided for performing an enzyme immunoassay, where the signal producing compound is chemically labile. Particularly, in homogeneous enzyme immunoassays, where the enzyme is conjugated with a hapten, and an antibody binding to hapten reduces or inhibits the activity of the enzyme-hapten conjugate, the immunoassay is performed in accordance with conventional procedures. After a sufficient time, antienzyme is added which rapidly deactivates the enzyme, so that the signal remains constant for long periods of time.