Assignee
DREW CHEM CORP
US·43 granted patents·909 citations·filing 1971–1995
Top patents by PatentIndex Score
43 records- 0190US5073354AProcess of stripping gold and silver from carbonDREW CHEM CORP·Filed 1990·Granted Dec 17, 1991·54 cites·11 claims
- 0285US3992318ACorrosion inhibitorDREW CHEM CORP·Filed 1973·Granted Nov 16, 1976·55 cites·10 claims
- 0384US4894119ARetention and/or drainage and/or dewatering aidDREW CHEM CORP·Filed 1985·Granted Jan 16, 1990·55 cites·10 claims
- 0481US4105581ACorrosion inhibitorDREW CHEM CORP·Filed 1977·Granted Aug 8, 1978·28 cites·14 claims
- 0578US4929274ARecovery of metal values from oresDREW CHEM CORP·Filed 1989·Granted May 29, 1990·23 cites·4 claims
- 0678US4487745AOximes as oxygen scavengersDREW CHEM CORP·Filed 1983·Granted Dec 11, 1984·40 cites·12 claims
- 0778US4377493ADefoamer composition and use thereofDREW CHEM CORP·Filed 1981·Granted Mar 22, 1983·43 cites·13 claims
- 0878US4090992ADispersions of water soluble polymers in oilDREW CHEM CORP·Filed 1977·Granted May 23, 1978·23 cites·12 claims
- 0977US4010110AProcess for dispersing contaminants in circulating water or polar organic liquid systemDREW CHEM CORP·Filed 1976·Granted Mar 1, 1977·38 cites·11 claims
- 1076US4401574AFlocculation of aqueous paint wasteDREW CHEM CORP·Filed 1981·Granted Aug 30, 1983·23 cites·5 claims
- 1176US3962119ANon-foaming dispersing compositionDREW CHEM CORP·Filed 1971·Granted Jun 8, 1976·28 cites·12 claims
- 1273US5401325AProcess for removing carbon deposits using microemulsion cleanersDREW CHEM CORP·Filed 1993·Granted Mar 28, 1995·35 cites·12 claims
- 1369US4303549ALiquid defoamer and defoaming processDREW CHEM CORP·Filed 1980·Granted Dec 1, 1981·28 cites·28 claims
- 1468US5401326AMicroemulsion cleansers and their usesDREW CHEM CORP·Filed 1993·Granted Mar 28, 1995·28 cites·23 claims
- 1567US4339945AProcess and apparatus for testing fluids for foulingDREW CHEM CORP·Filed 1980·Granted Jul 20, 1982·27 cites·18 claims
- 1667US4317744ACorrosion inhibitorDREW CHEM CORP·Filed 1979·Granted Mar 2, 1982·19 cites·15 claims
- 1766US4346587AProcess and apparatus for testing fluids for fouling and antifoulant protocolDREW CHEM CORP·Filed 1980·Granted Aug 31, 1982·27 cites·18 claims
- 1865US4725612ASynergistic microbiocidal compositions containing a mixture of a bicyclic polyoxymethylene oxazolidine and a 1,2-benzisothiazolin-3-oneDREW CHEM CORP·Filed 1987·Granted Feb 16, 1988·27 cites·2 claims
- 1965US4340500ALiquid defoamer and process of use thereofDREW CHEM CORP·Filed 1981·Granted Jul 20, 1982·24 cites·30 claims
- 2064US4096061ARecovery and reuse of paint solids from waste waterDREW CHEM CORP·Filed 1977·Granted Jun 20, 1978·20 cites·7 claims
- 2163US4724142ASynergistic microbiocidal compositions containing a mixture of a N-alkyl dimethylbenzylammonium halide and an acrolein/formaldehyde polycondensation productDREW CHEM CORP·Filed 1987·Granted Feb 9, 1988·9 cites·2 claims
- 2262US4104033AFoam prevention in sodium carbonate crystallizationDREW CHEM CORP·Filed 1976·Granted Aug 1, 1978·20 cites·16 claims
- 2361US5590716AMethod of inhibiting downhole corrosion of metal surfacesDREW CHEM CORP·Filed 1995·Granted Jan 7, 1997·23 cites·12 claims
- 2461US5382520AAutomated method for controlling the rate of chlorine dioxide generationDREW CHEM CORP·Filed 1993·Granted Jan 17, 1995·29 cites·3 claims
- 2561US4961878ACorrosion inhibitor for a closed aqueous cooling systemDREW CHEM CORP·Filed 1988·Granted Oct 9, 1990·16 cites·4 claims
- 2660US4724143ASynergistic microbiocidal composition containing a mixture of a bicyclic polyoxymethyleneoxazolidine and an acroloin/formaldehyde polycondensation productDREW CHEM CORP·Filed 1987·Granted Feb 9, 1988·8 cites·2 claims
- 2757US4749412AMethod and composition for the inhibition of corrosionDREW CHEM CORP·Filed 1987·Granted Jun 7, 1988·15 cites·12 claims
- 2856US4664884ACorrosion inhibitorDREW CHEM CORP·Filed 1985·Granted May 12, 1987·11 cites·2 claims
- 2956US3959176ANon-foaming dispersing compositionDREW CHEM CORP·Filed 1974·Granted May 25, 1976·16 cites·13 claims
- 3055US4725611ASynergistic microbiocidal compositions containing a mixture of a bicyclicpolyoxymethyleneoxazolidine and a 4-isothiazolin-3-oneDREW CHEM CORP·Filed 1987·Granted Feb 16, 1988·6 cites·2 claims
- 3150US4970026ACorrosion inhibitorDREW CHEM CORP·Filed 1988·Granted Nov 13, 1990·9 cites·2 claims
- 3248US4686854AProcess and apparatus for measuring corrosion rate of a heat transfer surfaceDREW CHEM CORP·Filed 1981·Granted Aug 18, 1987·18 cites·16 claims
- 3348US4626377ADefoaming compositionDREW CHEM CORP·Filed 1984·Granted Dec 2, 1986·13 cites·3 claims
- 3447US4806310ACorrosion inhibitorDREW CHEM CORP·Filed 1987·Granted Feb 21, 1989·8 cites·2 claims
- 3544US4725613ASynergistic microbiocidal composition containing a mixture of a N-alkyldimethylbenzyl ammonium halide and a bicyclicpolyoxymethylene oxazolidineDREW CHEM CORP·Filed 1987·Granted Feb 16, 1988·3 cites·2 claims
- 3644US4647314ARinse water additiveDREW CHEM CORP·Filed 1985·Granted Mar 3, 1987·13 cites·4 claims
- 3743US4477370ADefoaming compositionDREW CHEM CORP·Filed 1983·Granted Oct 16, 1984·10 cites·3 claims
- 3840US5403496AProcess for stabilizing metals in ashDREW CHEM CORP·Filed 1994·Granted Apr 4, 1995·13 cites·8 claims
- 3939US4915872ACast solid block corrosion inhibitor compositionDREW CHEM CORP·Filed 1989·Granted Apr 10, 1990·9 cites·4 claims
- 4039US4287072AWater treatment by ion exchange resinDREW CHEM CORP·Filed 1979·Granted Sep 1, 1981·9 cites·9 claims
- 4127US4386008ACorrosion protection packageDREW CHEM CORP·Filed 1981·Granted May 31, 1983·0 cites·14 claims
- 4225US4670236AControl of scale in flue gas scrubbersDREW CHEM CORP·Filed 1986·Granted Jun 2, 1987·4 cites·2 claims
- 4321US5068059ACorrosion inhibitorDREW CHEM CORP·Filed 1990·Granted Nov 26, 1991·2 cites·3 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →