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:
Apr. 07, 1998
Filed:
Aug. 08, 1995
Susan Alcock, Lavendon, Olney, Bucks MK46 4HX, GB;
Stephen White, Kempston, Bedford MK42 8TR, GB;
Anthony Turner, North Crawley, Bedfordshire, GB;
Steven Setford, Marlow, Bucks SL7 2NZ, GB;
Ibtisam Tothill, Cranfield, Beds MK43 OHA, GB;
Jon Dicks, Newport Pagnell, Bucks MK16 OJE, GB;
Sarah Stephens, Stoke, Coventry CV3 1AP, GB;
Jennifer Hall, Cranfield, Beds MK43 OBP, GB;
Phillip Warner, Wolverton, Milton Keynes MK12 5HG, GB;
Other;
Abstract
A backing sheet (101) is provided with a pattern of pathways (131,132,133) of (e.g.) silica or cellulose by a printing process (e.g., screen printing). There may be multiple pathways leading from an eluant application region (117) to a detection zone (116) and thence to a waste reservoir (118). Different pathways may have different fluid traversal times because they differ in length and/or material (e.g., nitrocellulose for slow traversal and fibrous cellulose for rapid traversal by an aqueous liquid). Thus analyte and reagents deposited at depots (112,113) on different pathways are sequentially delivered to the detection zone. Reagents may be applied by printing. The detection zone may have an electrode assembly (105), also applied by printing, for detecting the effects of analyte.