Inventor · disambiguated record
Ernst I. Leupold
Also filed as: LEUPOLD ERNST I · LEUPOLD ERNST INGO
42 granted patents·585 citations·filing 1976–1995
98Inventor score
Files withHOECHST AG42
Top patents by PatentIndex Score
42 records- 0198US4977283AProcess for the oxidation of 5-hydroxymethylfurfuralHOECHST AG·Filed 1989·Granted Dec 11, 1990·130 cites·23 claims
- 0295US4340748AProcess for the manufacture of glyoxylic acid estersHOECHST AG·Filed 1980·Granted Jul 20, 1982·47 cites·10 claims
- 0392US4224236AProcess for the manufacture of oxygen-containing carbon compounds from synthesis gasHOECHST AG·Filed 1979·Granted Sep 23, 1980·28 cites·11 claims
- 0491US4481146AProcess for the preparation of an ethyl esterHOECHST AG·Filed 1981·Granted Nov 6, 1984·43 cites·2 claims
- 0588US4128575AProcess for the manufacture of glycolic acid or its estersHOECHST AG·Filed 1977·Granted Dec 5, 1978·20 cites·6 claims
- 0687US4296266AProcess for the manufacture of lower olefins from methanol/water mixturesHOECHST AG·Filed 1980·Granted Oct 20, 1981·36 cites·6 claims
- 0781US4481376AProcess for the synthesis of lower olefins from methanol and/or dimethyl etherHOECHST AG·Filed 1983·Granted Nov 6, 1984·26 cites·3 claims
- 0881US4247731AProcess for the manufacture of lower alkenes from methanol and/or dimethyl etherHOECHST AG·Filed 1979·Granted Jan 27, 1981·25 cites·6 claims
- 0978US5490936AProcess for catalyst recoveryHOECHST AG·Filed 1994·Granted Feb 13, 1996·21 cites·11 claims
- 1077US5227529AProcess for the acylation of naphthyl ethers with the aid of zeolite catalystsHOECHST AG·Filed 1992·Granted Jul 13, 1993·17 cites·15 claims
- 1177US4442228AProcess for the manufacture of ethanol from synthesis gasHOECHST AG·Filed 1982·Granted Apr 10, 1984·13 cites·7 claims
- 1276US4976893AProcess for preparing carboxylic acidsHOECHST AG·Filed 1986·Granted Dec 11, 1990·12 cites·4 claims
- 1373US4128727AProcess for the manufacture of acetic acid ethyl esterHOECHST AG·Filed 1977·Granted Dec 5, 1978·9 cites·12 claims
- 1469US4692547AProcess for the preparation of glyoxylic hemiacetal estersHOECHST AG·Filed 1985·Granted Sep 8, 1987·10 cites·8 claims
- 1567US4568777AProcess for isomerizing monochlorophenols or dichlorophenolsHOECHST AG·Filed 1984·Granted Feb 4, 1986·17 cites·12 claims
- 1665US4935561AProcess for isomerizing monochlorotoluenes or dichlorotoluenesHOECHST AG·Filed 1985·Granted Jun 19, 1990·15 cites·10 claims
- 1765US4288558AProcess for the manufacture of oxygen-containing carbon compounds from synthesis gasHOECHST AG·Filed 1980·Granted Sep 8, 1981·7 cites·13 claims
- 1860US4937395AProcess for the preparation of fluorobenzenesHOECHST AG·Filed 1989·Granted Jun 26, 1990·6 cites·20 claims
- 1960US4604470AProcess for the isomerization of halogenated thiophenesHOECHST AG·Filed 1985·Granted Aug 5, 1986·5 cites·13 claims
- 2059US4009209ADimerization of cyclohexylidene-acetonitrile and hydrogenation of the resulting substituted glutaric acid dinitrileHOECHST AG·Filed 1976·Granted Feb 22, 1977·3 cites·9 claims
- 2157US4783541AProcess for isomerizing alkylthiophenesHOECHST AG·Filed 1987·Granted Nov 8, 1988·4 cites·5 claims
- 2256US5292626ADeveloper composition for irradiated, radiation-sensitive positive-working, negative-working and reversible reprographic layersHOECHST AG·Filed 1991·Granted Mar 8, 1994·13 cites·20 claims
- 2355US5019624APolyvinyl acetals and their useHOECHST AG·Filed 1990·Granted May 28, 1991·10 cites·9 claims
- 2455US4355187AProcess for the manufacture of methyl glyoxalHOECHST AG·Filed 1981·Granted Oct 19, 1982·4 cites·3 claims
- 2553US5230804AProcess for separating catalysts from suspensions by filtrationHOECHST AG·Filed 1992·Granted Jul 27, 1993·22 cites·12 claims
- 2650US5367104AProcess for the purification of organic compounds contaminated by dissolved metal compoundsHOECHST AG·Filed 1994·Granted Nov 22, 1994·5 cites·13 claims
- 2750US4814491AHemiacetals of glyoxylic esters and a process for the isolation of glyoxylic estersHOECHST AG·Filed 1988·Granted Mar 21, 1989·4 cites·7 claims
- 2850US4351908AProcess for the manufacture of acetic acid, acetic aldehyde and ethanol from synthesis gasHOECHST AG·Filed 1981·Granted Sep 28, 1982·3 cites·2 claims
- 2950US4302609AProcess for the manufacture of methylglyoxalHOECHST AG·Filed 1980·Granted Nov 24, 1981·3 cites·7 claims
- 3047US4522800AProcess for the production of a crystalline aluminosilicate zeoliteHOECHST AG·Filed 1983·Granted Jun 11, 1985·6 cites·3 claims
- 3145US4372878AProcess for the preparation of an aluminum silicate catalyst for converting methanol containing water and/or dimethyl ether containing water into lower olefinsHOECHST AG·Filed 1981·Granted Feb 8, 1983·5 cites·2 claims
- 3240US5043493AProcess for the preparation of 2-chloro- or 2-bromo-naphthaleneHOECHST AG·Filed 1990·Granted Aug 27, 1991·2 cites·13 claims
- 3339US5264094AProcess for the preparation of fluorobenzenesHOECHST AG·Filed 1990·Granted Nov 23, 1993·2 cites·9 claims
- 3438US4720583AProcess for the isomerization of o-, m- and/or p-toluidineHOECHST AG·Filed 1985·Granted Jan 19, 1988·1 cites·9 claims
- 3536US5396012AProcess for the preparation of monoisopropylnaphthaleneHOECHST AG·Filed 1992·Granted Mar 7, 1995·1 cites·16 claims
- 3636US5082504AProcess for the preparation of a mixture of sucrose oxidation products and the use thereofHOECHST AG·Filed 1990·Granted Jan 21, 1992·2 cites·21 claims
- 3736US4968833AProcess for the preparation of a glyoxylic acid esterHOECHST AG·Filed 1985·Granted Nov 6, 1990·5 cites·12 claims
- 3835US4605809AAluminosilicates and silica gels having a low content of transition elements, a process for their use in the conversion of methanol to olefinsHOECHST AG·Filed 1983·Granted Aug 12, 1986·2 cites·6 claims
- 3933US4590217AProcess for the manufacture of acetic acid, acetaldehyde and ethanolHOECHST AG·Filed 1984·Granted May 20, 1986·0 cites·8 claims
- 4030US5710330AProcess for preparing alkanephosphonic anhydridesHOECHST AG·Filed 1995·Granted Jan 20, 1998·0 cites·20 claims
- 4130US5210259AProcess for the oxidation of dialkyl esters of 2-hydroxy-ethylphosphonic acidHOECHST AG·Filed 1990·Granted May 11, 1993·0 cites·15 claims
- 4229US5238597ASucrosetricarboxylic acid and compositions containing the sameHOECHST AG·Filed 1991·Granted Aug 24, 1993·1 cites·3 claims
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