John W. Attridge has been granted 15 US patents while listed as an inventor at Applied Research Systems Ars Holding N.V. . The first was granted in 1992 and the most recent in February 2025. John W. Attridge ranks #307,048 of 4,157,543 US inventors in our database (top 7.4%). Patent records list John W. Attridge in Mickleham, GB.
Patents per Year Patents granted per year, 1992 to 2025 Bar chart with a peak of 3 patents in 2001. peak 3 1992: 1 patents 1992 1993: 2 patents 1993 1994: 2 patents 1994 1995: 1 patents 1995 1997: 1 patents 1997 1998: 2 patents 1998 1999: 1 patents 1999 2000: 1 patents 2000 2001: 3 patents 2001 2025: 1 patents 2025 Issued Patents All Time
Showing 1–15 of 15 patents
Patent # Title Co-Inventors Date Approx Value ⓘ
12215263 Tracer composition Jerry Cross , Charles Whitfield 2025-02-04
6300142 Device and apparatus for conducting an assay David Andrewes , David Griffiths , John Phillip Vessey , John Anthony Odell , Felix Fernando +4 more 2001-10-09
$17,000
D447713 Spectrophotometer Anthony Stevenson , Mark Cresswell , John L. Curtis , David Alan Percival , David Andrewes +3 more 2001-09-11
D443539 Sample holder for spectrophotometer Anthony Stevenson , Mark Cresswell , John L. Curtis , David Alan Percival , David Andrewes +3 more 2001-06-12
6027944 Capillary-fill biosensor device comprising a calibration zone Grenville Arthur Robinson , Julie Karen Deacon , Phelim Brinley Daniels , Colin Andrew Love , Aileen Margaret Thomson 2000-02-22
5994091 Optical sensor for enzyme and enzyme substrates Grenville Arthur Robinson 1999-11-30
5830766 Enhanced signal-to-noise ratio and sensitivity optical immunoassay Ian A. Shanks 1998-11-03
5726064 Method of assay having calibration within the assay Grenville Arthur Robinson , Julie Karen Deacon , Phelim Brinley Daniels , Colin Andrew Love , Aileen Margaret Thomson 1998-03-10
5631170 Method for improving measurement precision in evanescent wave optical biosensor assays — 1997-05-20
5478755 Long range surface plasma resonance immunoassay Ian A. Shanks 1995-12-26
5369717 Optical waveguide assay unit and method of improving assay sensitivity using same — 1994-11-29
5344784 Fluorescent assay and sensor therefor — 1994-09-06
5192502 Devices for use in chemical test procedures Alan M. Smith 1993-03-09
5186897 Multianalyte test vehicle Stephen W. Eason , Simon Degroot 1993-02-16
5166515 Method of optical analysis of a fluid including an optical waveguide — 1992-11-24