Inventor · disambiguated record
Rolf Lehmann
Also filed as: LEHMANN R LF · LEHMANN ROLF · LEHMANN ROLF R · SCHNYDER EUGEN
52 granted patents·8 pending applications·875 citations·filing 1974–2022
99Inventor score
Top patents by PatentIndex Score
60 records- 0196US4721154AMethod of, and apparatus for, the continuous casting of rapidly solidifying materialESCHER WYSS AG·Filed 1987·Granted Jan 26, 1988·65 cites·32 claims
- 0293US4605366ACalender for pressure and thermal treatment of material websESCHER WYSS AG·Filed 1984·Granted Aug 12, 1986·48 cites·11 claims
- 0389US4073549AHydrostatic supporting deviceESCHER WYSS LTD·Filed 1976·Granted Feb 14, 1978·39 cites·19 claims
- 0487US4422318ARoller with a roller surface which is to be heated or cooledESCHER WYSS LTD·Filed 1981·Granted Dec 27, 1983·22 cites·19 claims
- 0587US4282639AHeated controlled deflection rollESCHER WYSS LTD·Filed 1979·Granted Aug 11, 1981·34 cites·10 claims
- 0687US4041752ARolling mills having hydraulic forces exerted on the exterior roll surfacesESCHER WYSS LTD·Filed 1976·Granted Aug 16, 1977·28 cites·14 claims
- 0784US3997952ARoll for a rolling millESCHER WYSS LTD·Filed 1976·Granted Dec 21, 1976·25 cites·10 claims
- 0882US7434575B2Chainsaw chain for concreteDOLMAR GMBH·Filed 2005·Granted Oct 14, 2008·9 cites·16 claims
- 0982US5240666AApparatus and method for producing plastic foilsESCHER WYSS AG·Filed 1992·Granted Aug 31, 1993·46 cites·14 claims
- 1079US4124349ARolling mill with two press gapsESCHER WYSS LTD·Filed 1977·Granted Nov 7, 1978·17 cites·9 claims
- 1179US3997953ATemperature-controlled roll for a rolling millESCHER WYSS LTD·Filed 1976·Granted Dec 21, 1976·35 cites·12 claims
- 1278US4282638AControlled deflection rollESCHER WYSS LTD·Filed 1979·Granted Aug 11, 1981·24 cites·17 claims
- 1377US5393290ARoll with adjustable deflectionESCHER WYSS GMBH·Filed 1992·Granted Feb 28, 1995·23 cites·20 claims
- 1477US4218905ARolling millESCHER WYSS LTD·Filed 1977·Granted Aug 26, 1980·16 cites·29 claims
- 1577US4058877ADeflection-controlled roll for the pressure treatment of materials in web formESCHER WYSS LTD·Filed 1976·Granted Nov 22, 1977·23 cites·11 claims
- 1676US5431321ARoll for web pressing or web guidingESCHER WYSS GMBH·Filed 1994·Granted Jul 11, 1995·21 cites·10 claims
- 1775US4246668ATreatment of a web of materialESCHER WYSS LTD·Filed 1979·Granted Jan 27, 1981·11 cites·14 claims
- 1874US5290223ADeflection controlled rollESCHER WYSS GMBH·Filed 1993·Granted Mar 1, 1994·28 cites·10 claims
- 1973US4059976ARolling millESCHER WYSS LTD·Filed 1976·Granted Nov 29, 1977·14 cites·1 claims
- 2071US4047274ASupport for continuously cast hot metal componentsESCHER WYSS LTD·Filed 1976·Granted Sep 13, 1977·10 cites·14 claims
- 2170US4222255ARolling device having at least one controlled deflection rollESCHER WYSS AG·Filed 1979·Granted Sep 16, 1980·11 cites·8 claims
- 2267US4091517AHydrostatic support arrangementESCHER WYSS LTD·Filed 1977·Granted May 30, 1978·19 cites·19 claims
- 2366US4154078ARolling millESCHER WYSS LTD·Filed 1977·Granted May 15, 1979·10 cites·3 claims
- 2466US4090282ADeflection control deviceESCHER WYSS LTD·Filed 1977·Granted May 23, 1978·16 cites·12 claims
- 2564US4136546APressure rollESCHER WYSS LTD·Filed 1977·Granted Jan 30, 1979·9 cites·10 claims
- 2663US8397954B2Device for metering bulk materialLEHMANN ROLF·Filed 2005·Granted Mar 19, 2013·3 cites·23 claims
- 2763US4249290AControlled deflection rollESCHER WYSS LTD·Filed 1978·Granted Feb 10, 1981·15 cites·10 claims
- 2862US4983090ASystem for feeding bulk materialTRON INT INC·Filed 1989·Granted Jan 8, 1991·21 cites·24 claims
- 2960US4726691AHydrostatic support arrangementESCHER WYSS AG·Filed 1987·Granted Feb 23, 1988·19 cites·5 claims
- 3060US4429446ARoll for a rolling millESCHER WYSS AG·Filed 1982·Granted Feb 7, 1984·9 cites·3 claims
- 3159US4198905ACalender composed of controlled deflection rollsESCHER WYSS LTD·Filed 1979·Granted Apr 22, 1980·8 cites·8 claims
- 3257US3990935AMachine for producing a corrugated sheetESCHER WYSS LTD·Filed 1975·Granted Nov 9, 1976·23 cites·14 claims
- 3356US2007199132A1Removable headwear comforterLEHMANN ROLF R·Filed 2006·Application pending·0 cites
- 3455US5527422AMachine for continuous manufacture of chipboards, fibreboards or similar productsESCHER WYSS AG·Filed 1994·Granted Jun 18, 1996·16 cites·10 claims
- 3555US5345864APrinting cylinder of a rotary printing press and a method for use therewithESCHER WYSS AG·Filed 1992·Granted Sep 13, 1994·18 cites·22 claims
- 3655US4091862AGuiding device for continuously cast metal strands and the likeESCHER WYSS LTD·Filed 1977·Granted May 30, 1978·6 cites·33 claims
- 3755US4069569ADeflection-controlled roll for the pressure treatment of materials in web formCONTINENTAL GUMMI WERKE AG·Filed 1976·Granted Jan 24, 1978·14 cites·12 claims
- 3855US2025326569A1Gravimetric metering unit for flowable bulk materialK TRON TECH INC·Filed 2022·Application pending·0 cites
- 3952US4721039AMethod and control apparatus for separating the rolls of a calenderESCHER WYSS AG·Filed 1987·Granted Jan 26, 1988·7 cites·9 claims
- 4052US2025035479A1Gravimetric metering unit for flowable bulk materialK TRON TECH INC·Filed 2022·Application pending·0 cites
- 4151US5197174AControlled deflection rollESCHER WYSS AG·Filed 1990·Granted Mar 30, 1993·14 cites·11 claims
- 4251US2025083891A1Gravimetric metering unit having a magnetic connection between the conveying screw and its holderK TRON TECH INC·Filed 2022·Application pending·0 cites
- 4351US2025198828A1Gravimetric metering unitK TRON TECH INC·Filed 2022·Application pending·0 cites
- 4450US2004181859A1Protective clothingFiled 2004·Application pending·0 cites
- 4550US2004148680A1Protective clothing, in particular gloveFiled 2004·Application pending·0 cites
- 4649US5143202AScrew conveyorK TRON TECH INC·Filed 1991·Granted Sep 1, 1992·15 cites·14 claims
- 4748US5111566AControlled deflection rollESCHER WYSS AG·Filed 1991·Granted May 12, 1992·7 cites·6 claims
- 4847US4058878AControlled deflection rollESCHER WYSS LTD·Filed 1977·Granted Nov 22, 1977·5 cites·11 claims
- 4946US4610617AHeat insulating protective shields for two-roll calender with heated rollsESCHER WYSS AG·Filed 1984·Granted Sep 9, 1986·11 cites·9 claims
- 5044US5372068ARotary printing pressESCHER WYSS AG·Filed 1992·Granted Dec 13, 1994·10 cites·5 claims
Showing the top 50 of 60 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →