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:
Oct. 18, 1988
Filed:
Aug. 08, 1983
Yuh-Geng Tsay, San Jose, CA (US);
Susan M Cain, Palo Alto, CA (US);
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Abstract
In the determination of the quantity of enzyme present as a result of an immunoassay procedure, the enzyme containing component is combined with a substrate which in the presence of the enzyme yields a photometrically detectable enzymatic reaction product and a non-interfering, enzymatically inhibiting second product. The enzymatic reaction is inhibited by the addition of an inhibiting quantity of the same compound as the second product after the enzymatic reaction has continued for a time sufficient to produce photometrically detectable first products in concentrations which are a function of the quantity of enzyme present. The enzyme reaction is inhibited before the enzymatic reacton has proceeded to the point where the quantity of photometrically detectable first compound is primarily a function of the amount of substrate. This method yields a more stable test medium than methods using other enzyme inhibitors.