Inventor · disambiguated record
Howard C. Welborn, Jr.
Also filed as: WELBORN HOWARD C · WELBORN JR HOWARD C · WELBORN JR HOWARD CURTIS
32 granted patents·7,794 citations·filing 1983–1997
99Inventor score
Files withEXXON CHEMICAL PATENTS INC27EXXON RESEARCH ENGINEERING CO3EXXON MOBIL CHEM PATENTS INC1WELBORN JR HOWARD C1
Top patents by PatentIndex Score
32 records- 0199US5324800AProcess and catalyst for polyolefin density and molecular weight controlEXXON CHEMICAL PATENTS INC·Filed 1991·Granted Jun 28, 1994·993 cites·33 claims
- 0299US5266223AEthylene alpha-olefin polymer substituted mono-and dicarboxylic acid dispersant additivesEXXON CHEMICAL PATENTS INC·Filed 1992·Granted Nov 30, 1993·142 cites·121 claims
- 0399US5017714ASilicon-bridged transition metal compoundsEXXON CHEMICAL PATENTS INC·Filed 1989·Granted May 21, 1991·686 cites·13 claims
- 0499US4937299AProcess and catalyst for producing reactor blend polyolefinsEXXON RESEARCH ENGINEERING CO·Filed 1985·Granted Jun 26, 1990·798 cites·17 claims
- 0599US4808561ASupported polymerization catalystEXXON CHEMICAL PATENTS INC·Filed 1988·Granted Feb 28, 1989·1.1k cites·16 claims
- 0699US4701432ASupported polymerization catalystEXXON CHEMICAL PATENTS INC·Filed 1986·Granted Oct 20, 1987·572 cites·20 claims
- 0799US4530914AProcess and catalyst for producing polyethylene having a broad molecular weight distributionEXXON RESEARCH ENGINEERING CO·Filed 1983·Granted Jul 23, 1985·499 cites·7 claims
- 0898US5382631ALinear ethylene interpolymer blends of interpolymers having narrow molecular weight and composition distributionsEXXON CHEMICAL PATENTS INC·Filed 1993·Granted Jan 17, 1995·358 cites·35 claims
- 0998US5229022AEthylene alpha-olefin polymer substituted mono- and dicarboxylic acid dispersant additives (PT-920)EXXON CHEMICAL PATENTS INC·Filed 1992·Granted Jul 20, 1993·136 cites·94 claims
- 1098US5124418ASupported polymerization catalystEXXON CHEMICAL PATENTS INC·Filed 1988·Granted Jun 23, 1992·179 cites·11 claims
- 1198US4935474AProcess and catalyst for producing polyethylene having a broad molecular weight distributionEXXON RESEARCH ENGINEERING CO·Filed 1985·Granted Jun 19, 1990·266 cites·7 claims
- 1298US4897455APolymerization processEXXON CHEMICAL PATENTS INC·Filed 1988·Granted Jan 30, 1990·220 cites·14 claims
- 1397US5183867APolymerization process using a new supported polymerization catalystEXXON CHEMICAL PATENTS INC·Filed 1991·Granted Feb 2, 1993·143 cites·12 claims
- 1497US5120867ASilicon-bridged transition metal compoundsWELBORN JR HOWARD C·Filed 1991·Granted Jun 9, 1992·307 cites·19 claims
- 1597US5084534AHigh pressure, high temperature polymerization of ethyleneEXXON CHEMICAL PATENTS INC·Filed 1987·Granted Jan 28, 1992·232 cites·16 claims
- 1697US5077255ANew supported polymerization catalystEXXON CHEMICAL PATENTS INC·Filed 1986·Granted Dec 31, 1991·139 cites·12 claims
- 1796US5633394ACatalyst compounds for olefin polymerizationEXXON CHEMICAL PATENTS INC·Filed 1994·Granted May 27, 1997·101 cites·8 claims
- 1896US4665208AProcess for the preparation of alumoxanesEXXON CHEMICAL PATENTS INC·Filed 1985·Granted May 12, 1987·309 cites·8 claims
- 1994US6300451B1Long-chain branched polymers and their productionEXXON CHEMICAL PATENTS INC·Filed 1994·Granted Oct 9, 2001·140 cites·27 claims
- 2094US5001244AMetallocene, hydrocarbylaluminum and hydrocarbylboroxine olefin polymerization catalystEXXON CHEMICAL PATENTS INC·Filed 1990·Granted Mar 19, 1991·62 cites·20 claims
- 2189US5441920ASilicon-bridged transition metal compoundsEXXON CHEMICAL PATENTS INC·Filed 1993·Granted Aug 15, 1995·55 cites·37 claims
- 2288US5191052ACopolymers of ethylene and 1,3-butadieneEXXON CHEMICAL PATENTS INC·Filed 1990·Granted Mar 2, 1993·51 cites·8 claims
- 2386US5314973ASilicon-bridged transition metal compoundsEXXON CHEMICAL PATENTS INC·Filed 1992·Granted May 24, 1994·39 cites·6 claims
- 2486US5277833AEthylene alpha-olefin polymer substituted mono-and dicarboxylic acid lubricant dispersant additivesEXXON CHEMICAL PATENTS INC·Filed 1992·Granted Jan 11, 1994·42 cites·135 claims
- 2583US5580939AProcess and catalyst for polyolefin density and molecular weight controlEXXON CHEMICAL PATENTS INC·Filed 1995·Granted Dec 3, 1996·47 cites·12 claims
- 2677US5681799AEthylene alpha-olefin/diene interpolymer-substituted carboxylic acid dispersant additivesEXXON CHEMICAL PATENTS INC·Filed 1995·Granted Oct 28, 1997·31 cites·20 claims
- 2773US5759967AEthylene α-olefin/diene interpolymer-substituted carboxylic acid dispersant additivesEXXON CHEMICAL PATENTS INC·Filed 1997·Granted Jun 2, 1998·26 cites·9 claims
- 2872US6255410B1Process for polymerizing olefinic feeds under pressureEXXON MOBIL CHEM PATENTS INC·Filed 1997·Granted Jul 3, 2001·49 cites·27 claims
- 2971US5435926AEthylene alpha-olefin polymer substituted mono- and dicarboxylic acid dispersant additivesEXXON CHEMICAL PATENTS INC·Filed 1994·Granted Jul 25, 1995·14 cites·15 claims
- 3070US4952714ANon-aqueous process for the preparation of alumoxanesEXXON CHEMICAL PATENTS INC·Filed 1989·Granted Aug 28, 1990·17 cites·6 claims
- 3164US5350532ABorated ethylene alpha-olefin polymer substituted mono- and dicarboxylic acid dispersant additivesEXXON CHEMICAL PATENTS INC·Filed 1993·Granted Sep 27, 1994·13 cites·23 claims
- 3259US5433757AEthylene alpha-olefin polymer substituted mono- and dicarboxylic acid dispersant additivesEXXON CHEMICAL PATENTS INC·Filed 1994·Granted Jul 18, 1995·10 cites·2 claims
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