Inventor · disambiguated record
Ludwig Schmidhammer
Also filed as: FREY HELLMUTH · MACK WILHELM · SCHMIDHAMMER LUDWIG
24 granted patents·256 citations·filing 1975–1998
96Inventor score
Top patents by PatentIndex Score
24 records- 0185US4788357AVinyl chloride productionWACKER CHEMIE GMBH·Filed 1987·Granted Nov 29, 1988·24 cites·1 claims
- 0284US4754088AProcess for oxychlorination of ethyleneWACKER CHEMIE GMBH·Filed 1987·Granted Jun 28, 1988·25 cites·6 claims
- 0381US4528174AMethod for preparing hydrogen chloride for the ethyleneoxichlorination processWACKER CHEMIE GMBH·Filed 1984·Granted Jul 9, 1985·19 cites·4 claims
- 0478US4409396AProcess for the manufacture of unsaturated carboxylic acid estersWACKER CHEMIE GMBH·Filed 1981·Granted Oct 11, 1983·15 cites·5 claims
- 0574US4482770ARemoval of acetylene from products of 1,2-dichloroethane pyrolysisWACKER CHEMIE GMBH·Filed 1981·Granted Nov 13, 1984·11 cites·7 claims
- 0672US5166120ACylindrically formed catalyst for the oxychlorination of ethyleneDEGUSSA·Filed 1991·Granted Nov 24, 1992·30 cites·8 claims
- 0766US4746759AProcess for thermal cracking of 1,2-dichloroethane to form vinyl chlorideWACKER CHEMIE GMBH·Filed 1986·Granted May 24, 1988·9 cites·2 claims
- 0863US5099085AChlorination reactions and oxychlorination reactions in the presence of honeycomb monolithic catalyst supportsWACKER CHEMIE GMBH·Filed 1991·Granted Mar 24, 1992·22 cites·12 claims
- 0962US4034051AStabilization of perchloroethyleneWACKER CHEMIE GMBH·Filed 1975·Granted Jul 5, 1977·7 cites·10 claims
- 1054US5986152ASupported catalyst, process for its production as well as its use in the oxychlorination of ethyleneDEGUSSA·Filed 1998·Granted Nov 16, 1999·19 cites·19 claims
- 1154US4822932AHeat recovery in production of vinyl chloride by pyrolysis of dichloroethaneWACKER CHEMIE GMBH·Filed 1988·Granted Apr 18, 1989·14 cites·1 claims
- 1252US4839153AProcess for purification of HCl from pyrolysis of EDCWACKER CHEMIE GMBH·Filed 1988·Granted Jun 13, 1989·10 cites·5 claims
- 1351US4986975AProcess for purifying hydrogen chloride from pyrolysis of 1,2-dichloroethaneWACKER CHEMIE GMBH·Filed 1989·Granted Jan 22, 1991·10 cites·4 claims
- 1450US4259264AProcess for the continuous chlorination of olefins in the liquid phase and an apparatus for carrying out the processWACKER CHEMIE GMBH·Filed 1979·Granted Mar 31, 1981·3 cites·7 claims
- 1549US4188347AProcess for treating unreacted 1,2-dichloroethane from 1,2-dichloroethane crackingWACKER CHEMIE GMBH·Filed 1978·Granted Feb 12, 1980·3 cites·5 claims
- 1648US3998706AProcess for the separation of chlorohydrocarbons from lower boiling impuritiesWACKER CHEMIE GMBH·Filed 1975·Granted Dec 21, 1976·4 cites·8 claims
- 1743US5068475AProcess for purifying unreacted 1,2-dichloroethane from a 1,2-dichloroethane pyrolysis processWACKER CHEMIE GMBH·Filed 1991·Granted Nov 26, 1991·3 cites·3 claims
- 1841US4220607AStabilized perchloroethyleneWACKER CHEMIE GMBH·Filed 1979·Granted Sep 2, 1980·2 cites·5 claims
- 1939US5177233ACatalyst system and use for the preparation of 1,2-dichloroethaneWACKER CHEMIE GMBH·Filed 1991·Granted Jan 5, 1993·7 cites·7 claims
- 2039US4388278APurification by hydrogenation of hydrogen chloride containing acetylene obtained by the thermal cracking of 1,2-dichloroethaneWACKER CHEMIE GMBH·Filed 1981·Granted Jun 14, 1983·6 cites·5 claims
- 2134US4540837AProcess for the work-up of residues of chlorinationWACKER CHEMIE GMBH·Filed 1983·Granted Sep 10, 1985·4 cites·7 claims
- 2232US4606742ANovel heat recovery processWACKER CHEMIE GMBH·Filed 1985·Granted Aug 19, 1986·6 cites·2 claims
- 2332US4584123AProcess for upgrading hydrogen chloride containing chlorine, iron-III-chloride, ethylene and/or acetyleneWACKER CHEMIE GMBH·Filed 1984·Granted Apr 22, 1986·0 cites·2 claims
- 2425US5233106AProcess for the hydrogenation of chloromethanesWACKER CHEMIE GMBH·Filed 1992·Granted Aug 3, 1993·3 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →