Assignee
ENVIRONMENTAL TEST SYSTEMS
US·11 granted patents·171 citations·filing 1987–2000
Top patents by PatentIndex Score
11 records- 0170US6030842AMethod, composition and device for the determination of free halogens in aqueous fluidsENVIRONMENTAL TEST SYSTEMS·Filed 1997·Granted Feb 29, 2000·45 cites·19 claims
- 0256US4855239ATest composition and device for the determination of cyanuric acid in waterENVIRONMENTAL TEST SYSTEMS·Filed 1987·Granted Aug 8, 1989·16 cites·9 claims
- 0350US6376252B1Preparation and method for cat box filler additive capable of detecting feline lower urinary tract disease (FLUTD)ENVIRONMENTAL TEST SYSTEMS·Filed 1999·Granted Apr 23, 2002·17 cites·17 claims
- 0449US5229299ATest devices and methods for determining halides in aqueous samplesENVIRONMENTAL TEST SYSTEMS·Filed 1992·Granted Jul 20, 1993·18 cites·12 claims
- 0545US6043096ADevice and method for the determination of waterENVIRONMENTAL TEST SYSTEMS·Filed 1998·Granted Mar 28, 2000·18 cites·16 claims
- 0645US5858797ATest composition, device and method for the colorimetric determination of phosphorusENVIRONMENTAL TEST SYSTEMS·Filed 1997·Granted Jan 12, 1999·15 cites·18 claims
- 0744US5498547AMethod and device for the determination of polymeric biguanides in aqueous fluidsENVIRONMENTAL TEST SYSTEMS·Filed 1994·Granted Mar 12, 1996·13 cites·13 claims
- 0834US6638480B2High sensitivity test system for the colorimetric determination of specific gravity or total dissolved solids in aqueous samplesENVIRONMENTAL TEST SYSTEMS·Filed 2000·Granted Oct 28, 2003·0 cites·6 claims
- 0931US5330715AMultilayer test device having fusion bonding attachment layerENVIRONMENTAL TEST SYSTEMS·Filed 1992·Granted Jul 19, 1994·14 cites·15 claims
- 1029US5801061AMethod for the colorimetric determination of analytes in the presence of interfering particulate materialsENVIRONMENTAL TEST SYSTEMS·Filed 1997·Granted Sep 1, 1998·10 cites·8 claims
- 1122US5856199AColorimetric dry reagent test device and method for the determination of analytes in solutions containing interfering colored substancesENVIRONMENTAL TEST SYSTEMS·Filed 1997·Granted Jan 5, 1999·5 cites·17 claims
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