Inventor · disambiguated record
Paul Opprecht
Also filed as: FREI SIEGFRIED · OPPRECHT PAUL
21 granted patents·239 citations·filing 1975–1988
95Inventor score
Top patents by PatentIndex Score
21 records- 0187US4495397AProjection for resistance welding of soft metalsOPPRECHT PAUL·Filed 1981·Granted Jan 22, 1985·39 cites·14 claims
- 0285US4677271AMethod for electrical resistance-welding and installation for carrying out said method and use of said method in drum manufactureOPPRECHT PAUL·Filed 1984·Granted Jun 30, 1987·36 cites·16 claims
- 0383US4160892AMethod and apparatus for seam welding overlapped edgesOPPRECHT PAUL·Filed 1976·Granted Jul 10, 1979·35 cites·18 claims
- 0478US4850214AMethod of fabricating a projection for resistance weldingOPPRECHT PAUL·Filed 1984·Granted Jul 25, 1989·24 cites·6 claims
- 0559US4417117ATransporting can bodies for a fully automated resistance welding machineOPPRECHT PAUL·Filed 1981·Granted Nov 22, 1983·11 cites·5 claims
- 0655US4354086AAutomated can resistance welderOPPRECHT PAUL·Filed 1979·Granted Oct 12, 1982·8 cites·21 claims
- 0754US4572937AMethod of electrical resistance roll seam welding with only one electrode wire, machine for performing the process and use of the processSOUDRONIC AG·Filed 1984·Granted Feb 25, 1986·11 cites·28 claims
- 0854US4249476AApparatus for applying a protective coating to the welded seam of a can body or the likeFREI SIEGFRIED·Filed 1978·Granted Feb 10, 1981·12 cites·13 claims
- 0953US4728766AWelding machine for welding tongues onto sheet-metal partsELPATRONIC AG·Filed 1986·Granted Mar 1, 1988·11 cites·19 claims
- 1051US4536636AMethod and machine for electrical resistance roll seam welding with a single electrode-wireOPPRECHT PAUL·Filed 1984·Granted Aug 20, 1985·10 cites·21 claims
- 1148US4675489AThrough guide for rounded blanks on a seam welding machineELPATRONIC AG·Filed 1985·Granted Jun 23, 1987·10 cites·6 claims
- 1244US4214140AResistance welding machine for seam welding of blanks or the likeOPPRECHT PAUL·Filed 1978·Granted Jul 22, 1980·6 cites·10 claims
- 1342US4332994AApparatus for resistance welding of can bodiesOPPRECHT PAUL·Filed 1980·Granted Jun 1, 1982·6 cites·10 claims
- 1437US4915562ARupturable can member as well as method and apparatus for its productionELPATRONIC AG·Filed 1988·Granted Apr 10, 1990·3 cites·3 claims
- 1534US4388891AApparatus for applying a protective coating to the welding or solder seam of can bodiesOPPRECHT PAUL·Filed 1981·Granted Jun 21, 1983·3 cites·14 claims
- 1631US4712960AOpenable can bodyELPATRONIC AG·Filed 1986·Granted Dec 15, 1987·4 cites·3 claims
- 1731US4662534ARupturable can memberELPATRONIC AG·Filed 1985·Granted May 5, 1987·2 cites·10 claims
- 1831US4652720AApparatus for the spot welding of coated sheet-metal membersELPATRONIC AG·Filed 1985·Granted Mar 24, 1987·2 cites·5 claims
- 1931US4051343AWelding head for resistance - welding machineOPPRECHT PAUL·Filed 1975·Granted Sep 27, 1977·2 cites·2 claims
- 2030US4795295ARupturable can member as well as method and apparatus for its productionELPATRONIC AG·Filed 1987·Granted Jan 3, 1989·1 cites·4 claims
- 2130US4637521AOpenable can bodyELPATRONIC AG·Filed 1985·Granted Jan 20, 1987·3 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →