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. 22, 1978
Filed:
Nov. 12, 1975
William J Dreyer, Altadena, CA (US);
Other;
Abstract
A broad new class of reagents permits extremely sensitive and specific assay for, or chemical separation of, a broad range of biological and nonbiological substances. Each reagent consists of a suspension of microscopic carrier material particles, each particle bearing (1) tracer material - fluorescent, radioactive or otherwise - and (2) a coating of biological homologue, that is, antibody, antigen, or portions or equivalents thereof, for the substance whose assay is desired. The latter substance if introduced into the suspension links the particles together in pairs or clumps, which may be sensitively and accurately detected by monitoring the tracer. The carrier is preferably partially hydrolyzed polyacrylamide resin, or in appropriate applications acrylic acid and other derivatives thereof, and other polymers including agar, and the coupling effected by covalent bonding. Other embodiments, including various mechanical forms of carrier, for greater ease of handling and separation, are also described.