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FWD>RE>Dyed Particles Paten

Leigh leigh at bangslabs.com
Fri Nov 10 09:14:36 EST 1995

                      FWD>RE>Dyed Particles Patents                10/30/95

We know that many companies sell immunochromatographic strip tests using gold
and dyed microspheres (latex particles). Does anyone know what patents limit
their widespread use? 

I know of a Unipath patent in Europe (May, K., M.E. Prior, and I. Richards,
Immunoassays and Devices Therefor,  WO 88/08534 International Patent, 1988,
November 3.), but none in the US (apparently).
There is a Becton-Dickinson patent in the US (Campbell, R., D. Wagner, J.
O'Connell, Solid Phase Assay with Visual Readout, US 4,703,017. 1987, Oct. 27.).
These are all I know about.

Please advise any others which are pertinent.

Leigh Bangs, aka "The Particle Doctor";  leigh at bangslabs.com 
Bangs Laboratories, Inc., 979 Keystone Way, Carmel, IN 46032-2823 USA
Tel: 317-844-7176  Fax: 317-575-8801
"The Microsphere Zone"  [Web Home Page: http://www.bangslabs.com/blab] 

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