Assignee
CHEM SYSTEMS
26 granted patents·486 citations·filing 1972–1985
Top patents by PatentIndex Score
26 records- 0195US3957651AMicroporous polyester membranes and polymer assisted phase inversion process for their manufactureCHEM SYSTEMS·Filed 1975·Granted May 18, 1976·88 cites·17 claims
- 0291US4477594AProcess for the synthesis of aliphatic alcohol-containing mixturesCHEM SYSTEMS·Filed 1982·Granted Oct 16, 1984·31 cites·25 claims
- 0390US4311851APreparation of carboxylic acid esters with BF3 -alcohol complex catalystCHEM SYSTEMS·Filed 1979·Granted Jan 19, 1982·34 cites·6 claims
- 0489US3945926AIntegral microporous high void volume polycarbonate membranes and a dry process for forming sameCHEM SYSTEMS·Filed 1972·Granted Mar 23, 1976·46 cites·23 claims
- 0588US4031123AMethanol production in a paraffinic mediumCHEM SYSTEMS·Filed 1975·Granted Jun 21, 1977·38 cites·6 claims
- 0686US4256913APreparation of carboxylic acids using a BF3 catalyst complexCHEM SYSTEMS·Filed 1979·Granted Mar 17, 1981·23 cites·5 claims
- 0782US4262138APreparation of carboxylic acid esters with BF3 complex catalystCHEM SYSTEMS·Filed 1979·Granted Apr 14, 1981·14 cites·7 claims
- 0882US4035459AProcess for spinning dry-fiber cellulose acetate hollow fiber membranesCHEM SYSTEMS·Filed 1975·Granted Jul 12, 1977·35 cites·9 claims
- 0979US4585899AHydrogenation of carboxylic acid compounds to aldehydes using MnO2 on gamma alumina as catalystCHEM SYSTEMS·Filed 1985·Granted Apr 29, 1986·15 cites·11 claims
- 1076US4567204AMethod for making methanolCHEM SYSTEMS·Filed 1984·Granted Jan 28, 1986·15 cites·7 claims
- 1174US4012424ACracking of mixtures containing hydroxyestersCHEM SYSTEMS·Filed 1975·Granted Mar 15, 1977·8 cites·7 claims
- 1272US4048271ADry process for forming polycarbonate membranesCHEM SYSTEMS·Filed 1976·Granted Sep 13, 1977·25 cites·17 claims
- 1369US4422886ASurface treatment for aluminum and aluminum alloysCHEM SYSTEMS·Filed 1983·Granted Dec 27, 1983·23 cites·8 claims
- 1467US4158100AProcess for the preparation of β-phenylethyl alcohol via homologationCHEM SYSTEMS·Filed 1977·Granted Jun 12, 1979·7 cites·6 claims
- 1566US4045477AAcetoxylation processCHEM SYSTEMS·Filed 1975·Granted Aug 30, 1977·6 cites·10 claims
- 1662US4261899APhthalic anhydride reaction systemCHEM SYSTEMS·Filed 1980·Granted Apr 14, 1981·16 cites·7 claims
- 1760US4391652ASurface treatment for aluminum and aluminum alloysCHEM SYSTEMS·Filed 1982·Granted Jul 5, 1983·16 cites·15 claims
- 1854US4012423AProcess for the production of epoxidesCHEM SYSTEMS·Filed 1975·Granted Mar 15, 1977·3 cites·16 claims
- 1952US4250344ACracking process for styreneCHEM SYSTEMS·Filed 1978·Granted Feb 10, 1981·3 cites·8 claims
- 2048US4087623ACatalyst recovery processCHEM SYSTEMS·Filed 1976·Granted May 2, 1978·8 cites·6 claims
- 2144US4035457ANonbiodegradable polymersCHEM SYSTEMS·Filed 1975·Granted Jul 12, 1977·8 cites·8 claims
- 2243US4639470AMethod for making methanolCHEM SYSTEMS·Filed 1985·Granted Jan 27, 1987·3 cites·3 claims
- 2342US4585900AHydrogenation of carboxylic acid compounds to aldehydes using Cu/YtO as catalystCHEM SYSTEMS·Filed 1985·Granted Apr 29, 1986·7 cites·11 claims
- 2442US4439309ATwo-stage hydrogen donor solvent cracking processCHEM SYSTEMS·Filed 1982·Granted Mar 27, 1984·6 cites·34 claims
- 2541US4325803AProcess for hydrogenation/extraction of organics contained in rockCHEM SYSTEMS·Filed 1980·Granted Apr 20, 1982·8 cites·29 claims
- 2623US4399295AProcess for preparing oxirane compoundsCHEM SYSTEMS·Filed 1979·Granted Aug 16, 1983·0 cites·13 claims
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