Inventor
Ernst I. Leupold
Inventor
Neu-Anspach, DE
Overview
Patents· 42 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C07Cprimary
C07CAcyclic or carbocyclic compounds44%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry15%
Y02PClimate change mitigation technologies in the production or processing of goods8%
C07DHeterocyclic compounds6%
A23LFoods, foodstuffs or non-alcoholic beverages, not otherwise provided for3%
B01DSeparation3%
C01BNon-metallic elements3%
C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium3%
C07HSugars3%
C11DDetergent compositions3%
PatentTitleYear
5,710,330'Process for preparing alkanephosphonic anhydrides'19985,490,936'Process for catalyst recovery'19965,396,012'Process for the preparation of monoisopropylnaphthalene'19955,367,104'Process for the purification of organic compounds contaminated by dissolved metal compounds'19945,292,626'Developer composition for irradiated, radiation-sensitive positive-working, negative-working and reversible reprographic layers'19945,264,094'Process for the preparation of fluorobenzenes'19935,238,597'Sucrosetricarboxylic acid and compositions containing the same'19935,230,804'Process for separating catalysts from suspensions by filtration'19935,227,529'Process for the acylation of naphthyl ethers with the aid of zeolite catalysts'19935,210,259'Process for the oxidation of dialkyl esters of 2-hydroxy-ethylphosphonic acid'19935,082,504'Process for the preparation of a mixture of sucrose oxidation products and the use thereof'19925,043,493'Process for the preparation of 2-chloro- or 2-bromo-naphthalene'19915,019,624'Polyvinyl acetals and their use'19914,976,893'Process for preparing carboxylic acids'19904,977,283'Process for the oxidation of 5-hydroxymethylfurfural'19904,968,833'Process for the preparation of a glyoxylic acid ester'19904,937,395'Process for the preparation of fluorobenzenes'19904,935,561'Process for isomerizing monochlorotoluenes or dichlorotoluenes'19904,814,491'Hemiacetals of glyoxylic esters and a process for the isolation of glyoxylic esters'19894,783,541'Process for isomerizing alkylthiophenes'19884,720,583'Process for the isomerization of o-, m- and/or p-toluidine'19884,692,547'Process for the preparation of glyoxylic hemiacetal esters'19874,605,809'Aluminosilicates and silica gels having a low content of transition elements, a process for their use in the conversion of methanol to olefins'19864,604,470'Process for the isomerization of halogenated thiophenes'19864,590,217'Process for the manufacture of acetic acid, acetaldehyde and ethanol'19864,568,777'Process for isomerizing monochlorophenols or dichlorophenols'19864,522,800'Process for the production of a crystalline aluminosilicate zeolite'19854,481,376'Process for the synthesis of lower olefins from methanol and/or dimethyl ether'19844,481,146'Process for the preparation of an ethyl ester'19844,442,228'Process for the manufacture of ethanol from synthesis gas'19844,372,878'Process for the preparation of an aluminum silicate catalyst for converting methanol containing water and/or dimethyl ether containing water into lower olefins'19834,355,187'Process for the manufacture of methyl glyoxal'19824,351,908'Process for the manufacture of acetic acid, acetic aldehyde and ethanol from synthesis gas'19824,340,748'Process for the manufacture of glyoxylic acid esters'19824,302,609'Process for the manufacture of methylglyoxal'19814,296,266'Process for the manufacture of lower olefins from methanol/water mixtures'19814,288,558'Process for the manufacture of oxygen-containing carbon compounds from synthesis gas'19814,247,731'Process for the manufacture of lower alkenes from methanol and/or dimethyl ether'19814,224,236'Process for the manufacture of oxygen-containing carbon compounds from synthesis gas'19804,128,575'Process for the manufacture of glycolic acid or its esters'19784,128,727'Process for the manufacture of acetic acid ethyl ester'19784,009,209'Dimerization of cyclohexylidene-acetonitrile and hydrogenation of the resulting substituted glutaric acid dinitrile'1977Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1977–1998Patents assigned to HOECHST AG (42)· patent assignee history
1977Based in Hofheim, DE· patent location history
1978Based in Westerfeld, DE· patent location history
1980–1998Based in Neu-Anspach, DE· patent location history
1993Based in Ansbach, DE· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HOECHST AG | 42 | 1977–1998 |
Locations
| Location | Patents | Span |
|---|---|---|
| Neu-Anspach, DE | 38 | 1980–1998 |
| Westerfeld, DE | 2 | 1978 |
| Ansbach, DE | 1 | 1993 |
| Hofheim, DE | 1 | 1977 |