Assignee
JOHNSON MATTHEY CO LTD
106 granted patents·2,531 citations·filing 1972–1985
Top patents by PatentIndex Score
106 records- 0196US4399199AProtective layerJOHNSON MATTHEY CO LTD·Filed 1981·Granted Aug 16, 1983·142 cites·6 claims
- 0295US3972837ACatalyst for purifying automotive exhaust gasesJOHNSON MATTHEY CO LTD·Filed 1974·Granted Aug 3, 1976·85 cites·4 claims
- 0394US4261742APlatinum group metal-containing alloysJOHNSON MATTHEY CO LTD·Filed 1979·Granted Apr 14, 1981·51 cites·6 claims
- 0493US4189405AIntermetallic catalystsJOHNSON MATTHEY CO LTD·Filed 1978·Granted Feb 19, 1980·68 cites·12 claims
- 0593US4162235ACatalystsJOHNSON MATTHEY CO LTD·Filed 1977·Granted Jul 24, 1979·63 cites·7 claims
- 0693US4089810ACatalystJOHNSON MATTHEY CO LTD·Filed 1976·Granted May 16, 1978·85 cites·2 claims
- 0792US4428768AProcess for the recovery of platinum group metals from refractory ceramic substratesJOHNSON MATTHEY CO LTD·Filed 1980·Granted Jan 31, 1984·48 cites·17 claims
- 0892US4061495APlatinum group metal-containing alloyJOHNSON MATTHEY CO LTD·Filed 1975·Granted Dec 6, 1977·39 cites·8 claims
- 0991US4049484AVacuum transfer head and method of useJOHNSON MATTHEY CO LTD·Filed 1975·Granted Sep 20, 1977·113 cites·6 claims
- 1090US4077913ACatalystJOHNSON MATTHEY CO LTD·Filed 1976·Granted Mar 7, 1978·49 cites·17 claims
- 1189US4228090ACompositions containing platinumJOHNSON MATTHEY CO LTD·Filed 1979·Granted Oct 14, 1980·26 cites·1 claims
- 1289US4225529ACompositions containing platinumJOHNSON MATTHEY CO LTD·Filed 1978·Granted Sep 30, 1980·42 cites·4 claims
- 1389US4200592ACatalytic hydroformylationJOHNSON MATTHEY CO LTD·Filed 1978·Granted Apr 29, 1980·23 cites·24 claims
- 1489US4165983AJewelry alloysJOHNSON MATTHEY CO LTD·Filed 1978·Granted Aug 28, 1979·41 cites·9 claims
- 1589US4130506AMetal powdersJOHNSON MATTHEY CO LTD·Filed 1976·Granted Dec 19, 1978·49 cites·5 claims
- 1687US4274877AMetal powdersJOHNSON MATTHEY CO LTD·Filed 1978·Granted Jun 23, 1981·43 cites·5 claims
- 1787US4250189ACompositions containing platinumJOHNSON MATTHEY CO LTD·Filed 1979·Granted Feb 10, 1981·39 cites·3 claims
- 1887US4203912ACompositions containing platinumJOHNSON MATTHEY CO LTD·Filed 1978·Granted May 20, 1980·37 cites·3 claims
- 1987US4025606ACatalysisJOHNSON MATTHEY CO LTD·Filed 1974·Granted May 24, 1977·46 cites·23 claims
- 2086US4329299AComposition of matter containing platinumJOHNSON MATTHEY CO LTD·Filed 1980·Granted May 11, 1982·31 cites·2 claims
- 2186US4237032ACatalystsJOHNSON MATTHEY CO LTD·Filed 1978·Granted Dec 2, 1980·52 cites·7 claims
- 2286US4127510ACatalyst for the purification of an exhaust gasJOHNSON MATTHEY CO LTD·Filed 1976·Granted Nov 28, 1978·44 cites·3 claims
- 2385US4230631APlatinum coordination compoundsJOHNSON MATTHEY CO LTD·Filed 1978·Granted Oct 28, 1980·27 cites·5 claims
- 2484US3951860ACatalystJOHNSON MATTHEY CO LTD·Filed 1972·Granted Apr 20, 1976·33 cites·5 claims
- 2583US4100158AOsmium compoundsJOHNSON MATTHEY CO LTD·Filed 1976·Granted Jul 11, 1978·12 cites·1 claims
- 2683US3979329ACarbon molecular sieve catalystJOHNSON MATTHEY CO LTD·Filed 1974·Granted Sep 7, 1976·14 cites·2 claims
- 2782US4200591ACatalytic hydroformylationJOHNSON MATTHEY CO LTD·Filed 1978·Granted Apr 29, 1980·15 cites·22 claims
- 2882US4053556ACatalysisJOHNSON MATTHEY CO LTD·Filed 1976·Granted Oct 11, 1977·37 cites·13 claims
- 2981US4199416AComposition for the electroplating of goldJOHNSON MATTHEY CO LTD·Filed 1978·Granted Apr 22, 1980·23 cites·1 claims
- 3081US4163750AProcess for the hydrogenation of a vegetable oilJOHNSON MATTHEY CO LTD·Filed 1977·Granted Aug 7, 1979·27 cites·8 claims
- 3181US4108905ACatalytic reactionsJOHNSON MATTHEY CO LTD·Filed 1974·Granted Aug 22, 1978·16 cites·9 claims
- 3281US3963827ACatalysisJOHNSON MATTHEY CO LTD·Filed 1972·Granted Jun 15, 1976·27 cites·37 claims
- 3380US4135923AExtraction of metalsJOHNSON MATTHEY CO LTD·Filed 1977·Granted Jan 23, 1979·20 cites·4 claims
- 3479US4414071AElectrodeJOHNSON MATTHEY CO LTD·Filed 1981·Granted Nov 8, 1983·26 cites·5 claims
- 3579US4342606ASoldering compositionJOHNSON MATTHEY CO LTD·Filed 1980·Granted Aug 3, 1982·29 cites·18 claims
- 3679US4197217AIntermetallic catalystJOHNSON MATTHEY CO LTD·Filed 1978·Granted Apr 8, 1980·32 cites·14 claims
- 3779US3985854ARecovery of PT/RH from car exhaust catalystsJOHNSON MATTHEY CO LTD·Filed 1975·Granted Oct 12, 1976·25 cites·9 claims
- 3877US4301211ABrazing rod comprising an alloy core coated with a layer of elastomer containing a fluxJOHNSON MATTHEY CO LTD·Filed 1979·Granted Nov 17, 1981·33 cites·6 claims
- 3977US4233185ACatalysts for oxidation and reductionJOHNSON MATTHEY CO LTD·Filed 1977·Granted Nov 11, 1980·24 cites·17 claims
- 4076US4208353AProduction of formaldehydeJOHNSON MATTHEY CO LTD·Filed 1978·Granted Jun 17, 1980·26 cites·5 claims
- 4176US4139373AAlloys of titaniumJOHNSON MATTHEY CO LTD·Filed 1976·Granted Feb 13, 1979·20 cites·1 claims
- 4276US4002503ATreatment of metals and alloyJOHNSON MATTHEY CO LTD·Filed 1975·Granted Jan 11, 1977·25 cites·2 claims
- 4374US4163736AMethod of producing platinum-clad articlesJOHNSON MATTHEY CO LTD·Filed 1977·Granted Aug 7, 1979·25 cites·3 claims
- 4473US4289737ACatalytic reactionsJOHNSON MATTHEY CO LTD·Filed 1979·Granted Sep 15, 1981·30 cites·1 claims
- 4573US4148870AOsmium compoundsJOHNSON MATTHEY CO LTD·Filed 1978·Granted Apr 10, 1979·7 cites·3 claims
- 4673US4081710APlatinum-coated ignitersJOHNSON MATTHEY CO LTD·Filed 1976·Granted Mar 28, 1978·23 cites·24 claims
- 4772US4737205APlatinum group metal-containing alloyJOHNSON MATTHEY CO LTD·Filed 1985·Granted Apr 12, 1988·28 cites·1 claims
- 4872US4228138ACatalysisJOHNSON MATTHEY CO LTD·Filed 1978·Granted Oct 14, 1980·22 cites·10 claims
- 4972US4222025AResistance thermometersJOHNSON MATTHEY CO LTD·Filed 1978·Granted Sep 9, 1980·16 cites·4 claims
- 5071US4285994AProcess for production of free flowing dust-free pigmentsJOHNSON MATTHEY CO LTD·Filed 1980·Granted Aug 25, 1981·26 cites·2 claims
Showing the top 50 of 106 patent records by PatentIndex Score.
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