Assignee
PENNWALT CORP
613 granted patents·13,103 citations·filing 1963–1989
Top patents by PatentIndex Score
613 records- 0198US4210749ASubstituted 1,2,4,5-tetrahydro-3H,3 benzazepinesPENNWALT CORP·Filed 1979·Granted Jul 1, 1980·89 cites·2 claims
- 0298US4007165AUnsymmetrical tertiary-aliphatic azoalkanesPENNWALT CORP·Filed 1974·Granted Feb 8, 1977·59 cites·20 claims
- 0397US4931019AElectrostatic image display apparatusPENNWALT CORP·Filed 1988·Granted Jun 5, 1990·112 cites·23 claims
- 0497US4504402AEncapsulated phase change thermal energy _storage materialsPENNWALT CORP·Filed 1984·Granted Mar 12, 1985·158 cites·12 claims
- 0597US4233217ASubstituted 1,2,4,5-tetrahydro-3H, 3 benzazepinesPENNWALT CORP·Filed 1979·Granted Nov 11, 1980·64 cites·2 claims
- 0696US4505953AMethod for preparing encapsulated phase change materialsPENNWALT CORP·Filed 1983·Granted Mar 19, 1985·112 cites·23 claims
- 0796US4316448ASolar energy concentrator systemPENNWALT CORP·Filed 1980·Granted Feb 23, 1982·141 cites·11 claims
- 0896US4221778AProlonged release pharmaceutical preparationsPENNWALT CORP·Filed 1979·Granted Sep 9, 1980·324 cites·8 claims
- 0995US4904222ASynchronized sound producing amusement devicePENNWALT CORP·Filed 1988·Granted Feb 27, 1990·157 cites·12 claims
- 1095US4857596APolymer bound antioxidant stabilizersPENNWALT CORP·Filed 1987·Granted Aug 15, 1989·84 cites·11 claims
- 1195US4843275AAir buoyant piezoelectric polymeric film microphonePENNWALT CORP·Filed 1988·Granted Jun 27, 1989·133 cites·24 claims
- 1295US4726898AApparatus for spinning fruit for sorting thereofPENNWALT CORP·Filed 1986·Granted Feb 23, 1988·120 cites·12 claims
- 1395US4513053AEncapsulated phase change thermal energy storage materials and processPENNWALT CORP·Filed 1984·Granted Apr 23, 1985·122 cites·54 claims
- 1495US4424045ARigid high speed flexible shaft casing assembly for tight radii installationsPENNWALT CORP·Filed 1982·Granted Jan 3, 1984·122 cites·9 claims
- 1595US4208321APolyamide resins flame retarded by poly(metal phosphinate)sPENNWALT CORP·Filed 1979·Granted Jun 17, 1980·58 cites·7 claims
- 1695US4180495APolyester resins flame retarded by poly(metal phosphinate)sPENNWALT CORP·Filed 1978·Granted Dec 25, 1979·57 cites·8 claims
- 1795US3956269AAzo free radical initiators containing ultraviolet light stabilizing groupsPENNWALT CORP·Filed 1974·Granted May 11, 1976·31 cites·5 claims
- 1894US4874803ADianhydride coupled polymer stabilizersPENNWALT CORP·Filed 1987·Granted Oct 17, 1989·56 cites·24 claims
- 1994US4847301AMethods of use of α-(aminoalkyl)-arylacetic acid derivativesPENNWALT CORP·Filed 1988·Granted Jul 11, 1989·44 cites·13 claims
- 2094US4638207APiezoelectric polymeric film balloon speakerPENNWALT CORP·Filed 1986·Granted Jan 20, 1987·114 cites·13 claims
- 2194US4205060AMicrocapsules containing medicament-polymer salt having a water-insoluble polymer sheath, their production and their usePENNWALT CORP·Filed 1978·Granted May 27, 1980·110 cites·5 claims
- 2294US4166602ACounterbalancing mechanism for X-ray tubeheadsPENNWALT CORP·Filed 1978·Granted Sep 4, 1979·196 cites·6 claims
- 2394US3974157A1-(Amino-alkyl)-2-aryl-cyclohexane alcohols and estersPENNWALT CORP·Filed 1975·Granted Aug 10, 1976·48 cites·24 claims
- 2493US4868246APolymer bound UV stabilizersPENNWALT CORP·Filed 1987·Granted Sep 19, 1989·57 cites·11 claims
- 2593US4770527APhotoelectric-piezoelectric velocity and impact sensorPENNWALT CORP·Filed 1987·Granted Sep 13, 1988·73 cites·31 claims
- 2693US4725204AVacuum manifold pumping systemPENNWALT CORP·Filed 1986·Granted Feb 16, 1988·403 cites·16 claims
- 2793US4564709AProcess for the production of dialkyl-trisulfidesPENNWALT CORP·Filed 1983·Granted Jan 14, 1986·46 cites·9 claims
- 2893US4397977ATetrahalophthalates as flame retardant plasticizers for halogenated resinsPENNWALT CORP·Filed 1981·Granted Aug 9, 1983·53 cites·5 claims
- 2993US4208322APolyester-polyamide resins flame retarded by poly(metal phosphinate)sPENNWALT CORP·Filed 1979·Granted Jun 17, 1980·44 cites·8 claims
- 3093US4076929AVinylidene fluoride polymer having improved melt flow propertiesPENNWALT CORP·Filed 1975·Granted Feb 28, 1978·69 cites·8 claims
- 3192US4950364AProcess for the separation of 1,1-dichloro-1-fluoroethane and 1,1,1,3,3-pentafluorobutanePENNWALT CORP·Filed 1989·Granted Aug 21, 1990·34 cites·12 claims
- 3292US4521332AHighly alkaline cleaning dispersionPENNWALT CORP·Filed 1982·Granted Jun 4, 1985·83 cites·8 claims
- 3392US4497793AMicroencapsulated naturally occuring pyrethrinsPENNWALT CORP·Filed 1983·Granted Feb 5, 1985·55 cites·10 claims
- 3492US4115352AHeat stabilizer composition for halogenated resinsPENNWALT CORP·Filed 1977·Granted Sep 19, 1978·28 cites·18 claims
- 3592US4107059APolymer of 1,2,4-thiadiazole and lubricants containing it as an additivePENNWALT CORP·Filed 1977·Granted Aug 15, 1978·66 cites·8 claims
- 3692US4102931AManufacture of tertiary mercaptans using zeolite catalystsPENNWALT CORP·Filed 1977·Granted Jul 25, 1978·36 cites·14 claims
- 3791US4569978AEmulsion polymerization of vinylidene fluoride polymers in the presence of trichlorofluoromethane as chain transfer agentPENNWALT CORP·Filed 1985·Granted Feb 11, 1986·106 cites·17 claims
- 3891US4507481APyrrolo[1,2-a]imidazoles and imidazo[1,2-a]pyridinesPENNWALT CORP·Filed 1983·Granted Mar 26, 1985·50 cites·4 claims
- 3991US4501755AIsoflavones useful as anti-inflammatory agentsPENNWALT CORP·Filed 1982·Granted Feb 26, 1985·25 cites·10 claims
- 4091US4161949AAseptic connectorPENNWALT CORP·Filed 1977·Granted Jul 24, 1979·228 cites·10 claims
- 4191US4098704APolyoxyalkylene tetrahalophthalate ester as textile finishing agentPENNWALT CORP·Filed 1977·Granted Jul 4, 1978·48 cites·11 claims
- 4290US4906280ATertiary butylhydrazides as plant growth regulatorsPENNWALT CORP·Filed 1987·Granted Mar 6, 1990·39 cites·11 claims
- 4390US4626852ABuoy lantern systemPENNWALT CORP·Filed 1984·Granted Dec 2, 1986·58 cites·1 claims
- 4490US4360652AMethod of preparing high quality vinylidene fluoride polymer in aqueous emulsionPENNWALT CORP·Filed 1981·Granted Nov 23, 1982·64 cites·9 claims
- 4590US4141873AVinylidene fluoride polymer film-forming composition in aqueous dispersionPENNWALT CORP·Filed 1974·Granted Feb 27, 1979·41 cites·23 claims
- 4690US3969258ALow foaming acid-anionic surfactant sanitizer compositionsPENNWALT CORP·Filed 1974·Granted Jul 13, 1976·79 cites·8 claims
- 4790US3944688AMethod for the manufacture of water-repellent, fire-resistant nonwoven fabricsPENNWALT CORP·Filed 1973·Granted Mar 16, 1976·74 cites·6 claims
- 4889US5107120APassive infrared detectorPENNWALT CORP·Filed 1989·Granted Apr 21, 1992·81 cites·25 claims
- 4989US4857595APolymer bound hindered amine light stabilizersPENNWALT CORP·Filed 1987·Granted Aug 15, 1989·53 cites·19 claims
- 5089US4782058A1,3,4,6,7,11b-Hexahydro-6-phenyl-2H-pyrazino-(2,1-a)isoquinolines, for anti-histamine or anti-depression treatmentPENNWALT CORP·Filed 1987·Granted Nov 1, 1988·26 cites·10 claims
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