Inventor · disambiguated record
Peter S. Maa
Also filed as: MAA PETER S
21 granted patents·3 pending applications·513 citations·filing 1975–2017
96Inventor score
Top patents by PatentIndex Score
24 records- 0194US5055181AHydropyrolysis-gasification of carbonaceous materialEXXON RESEARCH ENGINEERING CO·Filed 1988·Granted Oct 8, 1991·86 cites·10 claims
- 0294US4485008ALiquefaction processEXXON RESEARCH ENGINEERING CO·Filed 1983·Granted Nov 27, 1984·70 cites·10 claims
- 0388US5338441ALiquefaction processEXXON RESEARCH ENGINEERING CO·Filed 1992·Granted Aug 16, 1994·72 cites·12 claims
- 0487US4831003ACatalyst composition and process of makingEXXON RESEARCH ENGINEERING CO·Filed 1987·Granted May 16, 1989·57 cites·12 claims
- 0585US4113602AIntegrated process for the production of hydrocarbons from coal or the like in which fines from gasifier are coked with heavy hydrocarbon oilEXXON RESEARCH ENGINEERING CO·Filed 1976·Granted Sep 12, 1978·29 cites·12 claims
- 0680US4189371AMultiple-stage hydrogen-donor coal liquefaction processEXXON RESEARCH ENGINEERING CO·Filed 1978·Granted Feb 19, 1980·26 cites·13 claims
- 0776US4092235ATreatment of coal by alkylation or acylation to increase liquid products from coal liquefactionEXXON RESEARCH ENGINEERING CO·Filed 1975·Granted May 30, 1978·22 cites·18 claims
- 0872US4123347ACoal liquefaction processEXXON RESEARCH ENGINEERING CO·Filed 1977·Granted Oct 31, 1978·19 cites·13 claims
- 0971US4022680AHydrogen donor solvent coal liquefaction processEXXON RESEARCH ENGINEERING CO·Filed 1975·Granted May 10, 1977·18 cites·21 claims
- 1069US4338182AMultiple-stage hydrogen-donor coal liquefactionEXXON RESEARCH ENGINEERING CO·Filed 1978·Granted Jul 6, 1982·17 cites·15 claims
- 1161US5795464AConversion of the organic component from tar sands to lower boiling productsEXXON RESEARCH ENGINEERING CO·Filed 1996·Granted Aug 18, 1998·24 cites·5 claims
- 1259US7419585B2Process for upgrading residuaEXXONMOBIL RES & ENG CO·Filed 2003·Granted Sep 2, 2008·6 cites·7 claims
- 1358US4824558ACoal liquefaction process with metal/iodine cocatalystEXXON RESEARCH ENGINEERING CO·Filed 1987·Granted Apr 25, 1989·16 cites·34 claims
- 1452US5096569ACatalytic hydropyrolysis of carbonaceous material with char recycleEXXON RESEARCH ENGINEERING CO·Filed 1991·Granted Mar 17, 1992·13 cites·11 claims
- 1548US5294349ACoal depolymerization and hydroprocessingEXXON RESEARCH ENGINEERING CO·Filed 1992·Granted Mar 15, 1994·11 cites·8 claims
- 1647US4338184ACoal conversion in the presence of added alkali metal compoundsEXXON RESEARCH ENGINEERING CO·Filed 1980·Granted Jul 6, 1982·8 cites·28 claims
- 1746US2015191657A1Direct coal liquefaction processACCELERGY CORP·Filed 2014·Application pending·0 cites
- 1844US4313816AStaged temperature coal conversion processEXXON RESEARCH ENGINEERING CO·Filed 1980·Granted Feb 2, 1982·7 cites·15 claims
- 1944US4283267AStaged temperature hydrogen-donor coal liquefaction processEXXON RESEARCH ENGINEERING CO·Filed 1978·Granted Aug 11, 1981·6 cites·12 claims
- 2042US9994778B2Direct coal liquefaction process and systemACCELERGY CORP·Filed 2016·Granted Jun 12, 2018·0 cites·14 claims
- 2142US2017321125A1Direct coal liquefaction processBAUMAN RICHARD F·Filed 2017·Application pending·0 cites
- 2241US2002038778A1Process for upgrading residuaFiled 2001·Application pending·0 cites
- 2339US4322283ACoal conversion in the presence of added hydrogen sulfideEXXON RESEARCH ENGINEERING CO·Filed 1980·Granted Mar 30, 1982·6 cites·24 claims
- 2438US7160437B2Method for determining the source of fouling in thermal conversion process unitsEXXONMOBIL RES & ENG CO·Filed 2003·Granted Jan 9, 2007·0 cites·21 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →