Inventor · disambiguated record
Thomas A. Johnson
Also filed as: JOHNSON THOMAS A · JOHNSON THOMAS ALBERT
30 granted patents·552 citations·filing 1979–2000
97Inventor score
Top patents by PatentIndex Score
30 records- 0195US4578517APolyalkylene polyamines from alkanolamine and ammonia or amines using group IIIB metal acid phosphate catalystsAIR PROD & CHEM·Filed 1983·Granted Mar 25, 1986·41 cites·42 claims
- 0293US4316840AReforming linear polyaminesAIR PROD & CHEM·Filed 1980·Granted Feb 23, 1982·38 cites·9 claims
- 0392US5869653AHydrogenation of nitriles to produce aminesAIR PROD & CHEM·Filed 1997·Granted Feb 9, 1999·50 cites·24 claims
- 0492US4316841AReforming linear polyaminesAIR PROD & CHEM·Filed 1980·Granted Feb 23, 1982·28 cites·9 claims
- 0591US4918233AProduction of ethylenediamine from monoethanolamine and ammoniaAIR PROD & CHEM·Filed 1986·Granted Apr 17, 1990·30 cites·5 claims
- 0691US4394524APreparation of polyalkylene polyamines from ammonia, alkyleneamine, and alkanolamineAIR PROD & CHEM·Filed 1981·Granted Jul 19, 1983·29 cites·22 claims
- 0791US4314083APreparation of linear polyalkylene polyaminesAIR PROD & CHEM·Filed 1980·Granted Feb 2, 1982·31 cites·16 claims
- 0890US4463193AProduction of noncyclic polyalkylene polyaminesAIR PROD & CHEM·Filed 1983·Granted Jul 31, 1984·26 cites·39 claims
- 0987US4503253AProduction of noncyclic polyalkyene polyaminesAIR PROD & CHEM·Filed 1984·Granted Mar 5, 1985·22 cites·20 claims
- 1087US4362886APreparation of linear polyalkylene polyamines using metal catalystAIR PROD & CHEM·Filed 1981·Granted Dec 7, 1982·18 cites·8 claims
- 1186US4605770ANoncyclic polyalkylene polyamines by the reaction of an alkanolamine compound and an alkyleneamine compound in the presence of a Group IIA or Group IIIB metal acid phosphate catalystAIR PROD & CHEM·Filed 1983·Granted Aug 12, 1986·20 cites·40 claims
- 1286US4224249AToluene diamine from non-washed dinitrotolueneAIR PROD & CHEM·Filed 1979·Granted Sep 23, 1980·25 cites·5 claims
- 1385US4617418APolyalkylene polyamines via vapor phase reactionAIR PROD & CHEM·Filed 1984·Granted Oct 14, 1986·20 cites·29 claims
- 1483US4766247AColor reduction of polyamines by mild catalytic hydrogenationAIR PROD & CHEM·Filed 1986·Granted Aug 23, 1988·18 cites·10 claims
- 1581US4399308ALewis acid halide catalysts for preparation of polyaminesAIR PROD & CHEM·Filed 1981·Granted Aug 16, 1983·15 cites·10 claims
- 1680US4720588APolyalkylene polyamines via vapor phase reaction using inert gasAIR PROD & CHEM·Filed 1986·Granted Jan 19, 1988·19 cites·18 claims
- 1777US4990672APropylene-linked polyethylene polyamines and a process for making sameAIR PROD & CHEM·Filed 1989·Granted Feb 5, 1991·19 cites·7 claims
- 1877US4560798AProduction of aminoethylethanolamine using rare earth metal or strontium hydrogen phosphates as catalystsAIR PROD & CHEM·Filed 1984·Granted Dec 24, 1985·27 cites·4 claims
- 1976US4597911AProduction of amino aliphatic and cycloaliphatic hydrogen sulfatesAIR PROD & CHEM·Filed 1983·Granted Jul 1, 1986·11 cites·5 claims
- 2073US6395188B1Treatment of water containing organic wastes with ammonium nitrateAIR PROD & CHEM·Filed 2000·Granted May 28, 2002·15 cites·7 claims
- 2173US5075507AProcess for the preparation of bis(aminopropyl)aliphatic glycolsAIR PROD & CHEM·Filed 1988·Granted Dec 24, 1991·13 cites·8 claims
- 2258US6332986B1Treatment of water containing organic wastes with ammonium nitrateAIR PROD & CHEM·Filed 2000·Granted Dec 25, 2001·13 cites·9 claims
- 2353US5769959AProcess for removing insoluable N-vinyl amide polymer from equipmentMITSUBISHI CHEM CORP·Filed 1995·Granted Jun 23, 1998·5 cites·9 claims
- 2450US5081305AProcess for the preparation of bis(aminopropoxy)alkanesAIR PROD & CHEM·Filed 1988·Granted Jan 14, 1992·9 cites·8 claims
- 2550US4943633ACatalytic preparation of cyanoalkyl lactamsAIR PROD & CHEM·Filed 1988·Granted Jul 24, 1990·3 cites·8 claims
- 2647US4709028ASynthesis of heterocyclic amines via the reaction of dialkylene glycol and ammoniaAIR PROD & CHEM·Filed 1987·Granted Nov 24, 1987·3 cites·15 claims
- 2738US4618716APreparation of polyethylene polyamines from 2-aminoethyl sulfuric acidAIR PROD & CHEM·Filed 1985·Granted Oct 21, 1986·1 cites·8 claims
- 2834US5072046ABis-[aminophenyl ketones] compoundsAIR PROD & CHEM·Filed 1989·Granted Dec 10, 1991·1 cites·14 claims
- 2932US5919979APreparation of alkyl formamidesAIR PROD & CHEM·Filed 1993·Granted Jul 6, 1999·2 cites·9 claims
- 3027US4864045AProduction of aminoethyl hydrogen sulfateFORD MICHAEL E·Filed 1986·Granted Sep 5, 1989·0 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →