Inventor · disambiguated record
John G. Speakman
Also filed as: SPEAKMAN JOHN · SPEAKMAN JOHN G · SPEAKMAN JOHN GABRIEL
15 granted patents·1 pending application·423 citations·filing 1976–2008
94Inventor score
Top patents by PatentIndex Score
16 records- 0195US5283278AGas phase olefin polymerization processBP CHEM INT LTD·Filed 1991·Granted Feb 1, 1994·163 cites·14 claims
- 0291US4879359AProcess for polymerising ethylene using a chromium oxide catalystBP CHEM INT LTD·Filed 1987·Granted Nov 7, 1989·90 cites·8 claims
- 0380US6372867B1Process for the gas phase polymerization of olefinsBP CHEMICAL LTD·Filed 2000·Granted Apr 16, 2002·18 cites·7 claims
- 0479US6677267B2Polymerization catalystsBP CHEM INT LTD·Filed 2001·Granted Jan 13, 2004·20 cites·45 claims
- 0577US4517345APolymerization processBP CHEM INT LTD·Filed 1982·Granted May 14, 1985·24 cites·10 claims
- 0676US6462152B1Polymerization processBP CHEM INT LTD·Filed 2000·Granted Oct 8, 2002·17 cites·21 claims
- 0776US4333851AOlefin polymerization catalyst, process and polyolefin productBP CHEM INT LTD·Filed 1980·Granted Jun 8, 1982·25 cites·11 claims
- 0875US4097409APreparation of titanium containing catalyst on magnesium support materialBRITISH PETROLEUM CO·Filed 1976·Granted Jun 27, 1978·18 cites·9 claims
- 0966US6492293B1Polymerisation catalystBP CHEM INT LTD·Filed 2000·Granted Dec 10, 2002·7 cites·44 claims
- 1058US5166279AProcess for the gas phase (co-)polymerization of ethyleneBP CHEM INT LTD·Filed 1990·Granted Nov 24, 1992·12 cites·10 claims
- 1158US4910271AProcess for the polymerisation of ethylene or the copolymerisation of ethylene and alpha-olefins in a fluidised bed in the presence of a chromium based catalystBP CHEM INT LTD·Filed 1985·Granted Mar 20, 1990·8 cites·16 claims
- 1257US2009191305A1Method of Increasing ActivityMORRIS PENELOPE·Filed 2008·Application pending·0 cites
- 1355US5165998APrepolymers of olefins containing a chromiumoxide and a granular refractory oxide supportBP CHEM INT LTD·Filed 1990·Granted Nov 24, 1992·11 cites·9 claims
- 1450US5336738AKill-gas introduction to a fluidized bed reactor containing chromium oxide catalystBP CHEM INT LTD·Filed 1991·Granted Aug 9, 1994·8 cites·12 claims
- 1531USRE35346EProcess for the polymerisation of ethylene or the copolymerisation of ethylene and alpha-olefins in a fluidised bed in the presence of a chromium based catalystBP CHEM INT LTD·Filed 1995·Granted Oct 1, 1996·1 cites·16 claims
- 1631USRE35324EPrepolymers of olefins containing a chromium oxide and a granular refractory oxide supportBP CHEM INT LTD·Filed 1995·Granted Sep 3, 1996·1 cites·8 claims
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