Assignee
NL INDUSTRIES INC
US·319 granted patents·11,826 citations·filing 1964–1991
Top patents by PatentIndex Score
319 records- 0199US4484753ARotary shaft sealNL INDUSTRIES INC·Filed 1983·Granted Nov 27, 1984·112 cites·25 claims
- 0298US4785247ADrill stem logging with electromagnetic waves and electrostatically-shielded and inductively-coupled transmitter and receiver elementsNL INDUSTRIES INC·Filed 1987·Granted Nov 15, 1988·292 cites·30 claims
- 0398US4605268ATransformer cable connectorNL INDUSTRIES INC·Filed 1982·Granted Aug 12, 1986·284 cites·24 claims
- 0498US4517112AModified organophilic clay complexes, their preparation and non-aqueous systems containing themNL INDUSTRIES INC·Filed 1982·Granted May 14, 1985·109 cites·24 claims
- 0598US4496468AHydrated hydroxyethyl cellulose compositionsNL INDUSTRIES INC·Filed 1982·Granted Jan 29, 1985·242 cites·10 claims
- 0698US4434075AAnionically modified organophilic clays and their preparationNL INDUSTRIES INC·Filed 1981·Granted Feb 28, 1984·136 cites·17 claims
- 0798US4197467ADry containment of radioactive materialsNL INDUSTRIES INC·Filed 1977·Granted Apr 8, 1980·65 cites·11 claims
- 0898US4105578AOrganophilic clay having enhanced dispersibilityNL INDUSTRIES INC·Filed 1977·Granted Aug 8, 1978·128 cites·5 claims
- 0998US4081496AThixotropic polyester compositions containing an organophilic clay gellantNL INDUSTRIES INC·Filed 1977·Granted Mar 28, 1978·83 cites·25 claims
- 1097US4434076AClay cation complexes and their use to increase viscosity of liquid organic systemsNL INDUSTRIES INC·Filed 1981·Granted Feb 28, 1984·89 cites·13 claims
- 1197US4412018AOrganophilic clay complexes, their preparation and compositions comprising said complexesNL INDUSTRIES INC·Filed 1980·Granted Oct 25, 1983·152 cites·24 claims
- 1297US4208218AViscosity increasing additive for non-aqueous fluid systemsNL INDUSTRIES INC·Filed 1978·Granted Jun 17, 1980·75 cites·6 claims
- 1396US4665511ASystem for acoustic caliper measurementsNL INDUSTRIES INC·Filed 1984·Granted May 12, 1987·153 cites·4 claims
- 1496US4593777ADrag bit and cuttersNL INDUSTRIES INC·Filed 1984·Granted Jun 10, 1986·162 cites·16 claims
- 1596US4451789ALogging tool and method for measuring resistivity of different radial zones at a common depth of measurementNL INDUSTRIES INC·Filed 1981·Granted May 29, 1984·93 cites·15 claims
- 1695US4450095AOrganophilic clay gellant having enhanced dispersibilityNL INDUSTRIES INC·Filed 1980·Granted May 22, 1984·68 cites·6 claims
- 1795US4391637ARheological additive for non-aqueous fluid systemsNL INDUSTRIES INC·Filed 1981·Granted Jul 5, 1983·66 cites·13 claims
- 1895US4210572ACoupling agents for thermosetting compositesNL INDUSTRIES INC·Filed 1978·Granted Jul 1, 1980·86 cites·14 claims
- 1994US4571693AAcoustic device for measuring fluid propertiesNL INDUSTRIES INC·Filed 1983·Granted Feb 18, 1986·129 cites·21 claims
- 2094US4410364APrinting ink compositionsNL INDUSTRIES INC·Filed 1981·Granted Oct 18, 1983·62 cites·8 claims
- 2193US4590593AElectronic noise filtering systemNL INDUSTRIES INC·Filed 1983·Granted May 20, 1986·78 cites·18 claims
- 2293US4453605ADrill bit and method of metallurgical and mechanical holding of cutters in a drill bitNL INDUSTRIES INC·Filed 1981·Granted Jun 12, 1984·88 cites·9 claims
- 2393USD256576SBicycle wheel or similar articleNL INDUSTRIES INC·Filed 1979·Granted Aug 26, 1980·36 cites·1 claims
- 2493US4116866AOrganophilic clay gellantNL INDUSTRIES INC·Filed 1977·Granted Sep 26, 1978·86 cites·9 claims
- 2592US4558753ADrag bit and cuttersNL INDUSTRIES INC·Filed 1983·Granted Dec 17, 1985·94 cites·26 claims
- 2692US4553615ARotary drilling bitsNL INDUSTRIES INC·Filed 1983·Granted Nov 19, 1985·193 cites·13 claims
- 2792US4528104AOil based packer fluidsNL INDUSTRIES INC·Filed 1982·Granted Jul 9, 1985·86 cites·40 claims
- 2892US4499233AWater dispersible, modified polyurethane and a thickened aqueous composition containing itNL INDUSTRIES INC·Filed 1983·Granted Feb 12, 1985·76 cites·30 claims
- 2992US4350215ADrill bit and method of manufactureNL INDUSTRIES INC·Filed 1980·Granted Sep 21, 1982·117 cites·19 claims
- 3091US4804051AMethod of predicting and controlling the drilling trajectory in directional wellsNL INDUSTRIES INC·Filed 1987·Granted Feb 14, 1989·108 cites·16 claims
- 3191US4662458AMethod and apparatus for bottom hole measurementNL INDUSTRIES INC·Filed 1985·Granted May 5, 1987·107 cites·14 claims
- 3291US4538690APDC cutter and bitNL INDUSTRIES INC·Filed 1983·Granted Sep 3, 1985·105 cites·28 claims
- 3391US4248839AChlorination of impure magnesium chloride meltNL INDUSTRIES INC·Filed 1979·Granted Feb 3, 1981·53 cites·14 claims
- 3491US4159908AAlkali metal containing battery grid lead alloyNL INDUSTRIES INC·Filed 1978·Granted Jul 3, 1979·39 cites·11 claims
- 3591US4069034ASuspension fertilizers and method of producing sameNL INDUSTRIES INC·Filed 1975·Granted Jan 17, 1978·60 cites·36 claims
- 3690US4614148AControl valve system for blowout preventersNL INDUSTRIES INC·Filed 1985·Granted Sep 30, 1986·50 cites·8 claims
- 3790US4492865ABorehole influx detector and methodNL INDUSTRIES INC·Filed 1982·Granted Jan 8, 1985·94 cites·31 claims
- 3890US4330414ADispersible hydrophilic polymer compositionsNL INDUSTRIES INC·Filed 1980·Granted May 18, 1982·66 cites·28 claims
- 3990US4288418AProcess for manufacturing titanium dioxideNL INDUSTRIES INC·Filed 1980·Granted Sep 8, 1981·34 cites·12 claims
- 4090US4226754ASynthetic polymerNL INDUSTRIES INC·Filed 1978·Granted Oct 7, 1980·63 cites·23 claims
- 4190US3965552AProcess for forming internal conductors and electrodesNL INDUSTRIES INC·Filed 1974·Granted Jun 29, 1976·46 cites·30 claims
- 4289US4698501ASystem for simultaneous gamma-gamma formation density logging while drillingNL INDUSTRIES INC·Filed 1985·Granted Oct 6, 1987·71 cites·26 claims
- 4389US4612109AMethod for controlling foaming in delayed coking processesNL INDUSTRIES INC·Filed 1985·Granted Sep 16, 1986·69 cites·15 claims
- 4489US4518888ADownhole apparatus for absorbing vibratory energy to generate electrical powerNL INDUSTRIES INC·Filed 1982·Granted May 21, 1985·109 cites·22 claims
- 4589US4287086AViscous organic systems containing an organophilic clay gellant without an organic dispersant thereforNL INDUSTRIES INC·Filed 1976·Granted Sep 1, 1981·55 cites·12 claims
- 4689US4284506ABiomedical devicesNL INDUSTRIES INC·Filed 1979·Granted Aug 18, 1981·46 cites·10 claims
- 4789US4040866ALaundering of oil base mud cuttingsNL INDUSTRIES INC·Filed 1976·Granted Aug 9, 1977·70 cites·6 claims
- 4889US4030004ADielectric ceramic matrices with end barriersNL INDUSTRIES INC·Filed 1975·Granted Jun 14, 1977·40 cites·8 claims
- 4988US4471943AValve assembly and seatNL INDUSTRIES INC·Filed 1982·Granted Sep 18, 1984·45 cites·25 claims
- 5088US4467833AControl valve and electrical and hydraulic control systemNL INDUSTRIES INC·Filed 1981·Granted Aug 28, 1984·60 cites·3 claims
Showing the top 50 of 319 patent records by PatentIndex Score.
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