Inventor · disambiguated record
Helmut Waldmann
Also filed as: RAULEDER GEBHARD · SEIFERT HERMANN · SWODENK WOLFGANG · WALDMANN HELMUT
66 granted patents·603 citations·filing 1972–1997
99Inventor score
Top patents by PatentIndex Score
66 records- 0191US5369947AProcess for converting plastic waste into powerBAYER AG·Filed 1993·Granted Dec 6, 1994·64 cites·5 claims
- 0290US4369096AProcess for the purification of epoxidesBAYER AG·Filed 1980·Granted Jan 18, 1983·23 cites·20 claims
- 0388US4113747AProcess for the preparation of propylene oxideBAYER AG·Filed 1976·Granted Sep 12, 1978·19 cites·32 claims
- 0484US4370275AProcess for the preparation of carbonic acid estersBAYER AG·Filed 1981·Granted Jan 25, 1983·20 cites·8 claims
- 0583US4341709APreparation of ε-caprolactoneBAYER AG·Filed 1980·Granted Jul 27, 1982·15 cites·20 claims
- 0682US5304525ACatalyst for the preparation of anilineBAYER AG·Filed 1993·Granted Apr 19, 1994·23 cites·7 claims
- 0782US4294703AHydrogen peroxide treatment of effluentBAYER AG·Filed 1980·Granted Oct 13, 1981·43 cites·6 claims
- 0881US3972944AProcess for preparing aldehydes from olefinsBAYER AG·Filed 1973·Granted Aug 3, 1976·13 cites·12 claims
- 0980US4321143ATreating effluent with peroxide and ironBAYER AG·Filed 1980·Granted Mar 23, 1982·40 cites·3 claims
- 1078US4360682AStabilizing caprolactones with dihydroxybenzenesDEGUSSA·Filed 1980·Granted Nov 23, 1982·10 cites·9 claims
- 1176US5599965AProcess for the preparation of dialky carbonatesBAYER AG·Filed 1994·Granted Feb 4, 1997·15 cites·11 claims
- 1276US5322965AProcess for the preparation of a mixture of cyclohexylamine and dicyclohexylamine using a supported noble metal catalystBAYER AG·Filed 1993·Granted Jun 21, 1994·14 cites·9 claims
- 1375US5210328AProcess for the preparation of substituted cycloalkylidene bisphenolsBAYER AG·Filed 1992·Granted May 11, 1993·14 cites·2 claims
- 1474US6387345B1Process for working up reaction gases during the oxidation HCI to chlorineBAYER AG·Filed 1996·Granted May 14, 2002·38 cites·15 claims
- 1573US4137242AProcess for the preparation of propylene oxideBAYER AG·Filed 1976·Granted Jan 30, 1979·8 cites·32 claims
- 1671US4045496AProcess for the hydroxylation of phenols and phenol ethers in the nucleusBAYER AG·Filed 1975·Granted Aug 30, 1977·8 cites·20 claims
- 1770US5789620AProcess for the preparation of 1,4-bis(aminomethyl) cyclohexaneBAYER AG·Filed 1997·Granted Aug 4, 1998·14 cites·2 claims
- 1868US5233072AProcess for the preparation of dialkyl carbonatesBAYER AG·Filed 1992·Granted Aug 3, 1993·10 cites·19 claims
- 1968US4661646AProcess for the preparation of 1-butene-3,4-diolBAYER AG·Filed 1985·Granted Apr 28, 1987·12 cites·16 claims
- 2066US5196592AProcess for the preparation of diphenylaminesBAYER AG·Filed 1991·Granted Mar 23, 1993·9 cites·20 claims
- 2166US4324925AProcess for the preparation of polyhydric phenolsBAYER AG·Filed 1980·Granted Apr 13, 1982·8 cites·15 claims
- 2265US4244877AProcess for the preparation of hexahydrophthalic acid anhydrideBAYER AG·Filed 1979·Granted Jan 13, 1981·6 cites·12 claims
- 2365US4053523AProcess for the hydroxylation of phenolBAYER AG·Filed 1975·Granted Oct 11, 1977·11 cites·14 claims
- 2464US5523452AProcess for preparing dimethyl carbonateBAYER AG·Filed 1994·Granted Jun 4, 1996·8 cites·9 claims
- 2563US4705843AProcess for the production of substituted polyaryl ethersBAYER AG·Filed 1985·Granted Nov 10, 1987·14 cites·11 claims
- 2663US4582923AProcess for the production of urethanesBAYER AG·Filed 1985·Granted Apr 15, 1986·7 cites·11 claims
- 2763US4059619AProcess for the preparation of percarboxylic acid solutionsDEGUSSA·Filed 1976·Granted Nov 22, 1977·6 cites·17 claims
- 2860US3933910AProcess for the production of ketazinesBAYER AG·Filed 1974·Granted Jan 20, 1976·6 cites·8 claims
- 2958US5801285AProcess for the preparation of 2-methyl-2,4-diaminopentaneBAYER AG·Filed 1997·Granted Sep 1, 1998·9 cites·4 claims
- 3057US4593116AProcess for the production of urethanesBAYER AG·Filed 1984·Granted Jun 3, 1986·5 cites·15 claims
- 3156US5166440AProcess for the preparation of n-alkylated aromatic aminesBAYER AG·Filed 1990·Granted Nov 24, 1992·5 cites·20 claims
- 3256US4387252AProcess for the preparation of polyhydric phenolsBAYER AG·Filed 1980·Granted Jun 7, 1983·5 cites·3 claims
- 3356US4381973AProcess for the preparation of pyrocatechol and hydroquinoneBAYER AG·Filed 1981·Granted May 3, 1983·6 cites·11 claims
- 3456US4362604AProcess for the preparation of pyrocatechol and hydroquinoneBAYER AG·Filed 1981·Granted Dec 7, 1982·6 cites·13 claims
- 3556US4088679AProcess for the preparation of perpropionic acid solutionsDEGUSSA·Filed 1976·Granted May 9, 1978·4 cites·7 claims
- 3655US5276213ASpecial dihydroxydiphenyl bicycloalkanes, their production and their use for the production of high molecular weight polycarbonatesBAYER AG·Filed 1993·Granted Jan 4, 1994·4 cites·4 claims
- 3755US3974224AProcess for preparing aldehydes from oxirane compoundsBAYER AG·Filed 1973·Granted Aug 10, 1976·4 cites·8 claims
- 3854US4214105AProcess for the hydroxylation of phenolBAYER AG·Filed 1978·Granted Jul 22, 1980·7 cites·14 claims
- 3953US5212280APolycarbonate from special dihydroxydiphenyl bicycloalkaneBAYER AG·Filed 1991·Granted May 18, 1993·7 cites·4 claims
- 4053US4182917AProcess for the preparation of polyhydric phenolsBAYER AG·Filed 1977·Granted Jan 8, 1980·3 cites·20 claims
- 4152US5504260ACatalytic oxidationBAYER AG·Filed 1994·Granted Apr 2, 1996·4 cites·9 claims
- 4251US4182918AProcess for the preparation of polyhydric phenolsBAYER AG·Filed 1977·Granted Jan 8, 1980·3 cites·19 claims
- 4351US4087454AProcess for the preparation of perpropionic acid solutionsDEGUSSA·Filed 1976·Granted May 2, 1978·3 cites·6 claims
- 4450US4013723AProcess for preparing aldehydesBAYER AG·Filed 1972·Granted Mar 22, 1977·3 cites·5 claims
- 4549US4001303AProduction of ω-formyl carboxylic acid estersBAYER AG·Filed 1973·Granted Jan 4, 1977·3 cites·11 claims
- 4648US4562274AProcess for the preparation and isolation of polyglycidyl compoundsBAYER AG·Filed 1983·Granted Dec 31, 1985·2 cites·8 claims
- 4747US5434310AProcess for the preparation of acylbenzenesBAYER AG·Filed 1994·Granted Jul 18, 1995·3 cites·8 claims
- 4845US5583252AProcess for preparing 4,4'-dinitrostilbene-2,2'-disulphonic acid and its saltsBAYER AG·Filed 1995·Granted Dec 10, 1996·3 cites·11 claims
- 4944US4199593ACombating arthropods with 5-(3,4-methylenedioxybenzyl)-dioxolanes and synergistic compositions therewithBAYER AG·Filed 1978·Granted Apr 22, 1980·1 cites·14 claims
- 5043US4714689AProcess for the regeneration of catalysts for the gas-phase reduction of aromatic nitro compoundsBAYER AG·Filed 1986·Granted Dec 22, 1987·8 cites·16 claims
Showing the top 50 of 66 patent records by PatentIndex Score.
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