Assignee
LUPKE MANFRED ARNO ALFRED
CA·37 granted patents·2 pending applications·876 citations·filing 1975–2022
Top patents by PatentIndex Score
39 records- 0194US4141576AHeat shrinkable sleeve for coupling pipe sectionsLUPKE MANFRED ARNO ALFRED·Filed 1977·Granted Feb 27, 1979·77 cites·9 claims
- 0294US3957386ACorrugated tubing perforating machineLUPKE MANFRED ARNO ALFRED·Filed 1975·Granted May 18, 1976·67 cites·15 claims
- 0391US4534923AMethod and apparatus for forming a double walled thermoplastic tube with integral bellsLUPKE MANFRED ARNO ALFRED·Filed 1983·Granted Aug 13, 1985·56 cites·10 claims
- 0489US4689174AProducing double-walled helically wound thermoplastic pipe with a corrugated cutter wall and a smooth inner wallLUPKE MANFRED ARNO ALFRED·Filed 1986·Granted Aug 25, 1987·70 cites·4 claims
- 0589US4510013AApparatus for producing multi-walled thermoplastic tubingLUPKE MANFRED ARNO ALFRED·Filed 1982·Granted Apr 9, 1985·57 cites·2 claims
- 0687US4500284AForming single wall bells in double wall pipeLUPKE MANFRED ARNO ALFRED·Filed 1983·Granted Feb 19, 1985·50 cites·2 claims
- 0785US10279536B2System and method for identifying thermal expansion issues in a corrugatorLUPKE MANFRED ARNO ALFRED·Filed 2016·Granted May 7, 2019·2 cites·9 claims
- 0885US7214051B2Device for manufacturing a double-walled thermoplastic pipe with a connecting sleeveLUPKE MANFRED ARNO ALFRED·Filed 2005·Granted May 8, 2007·9 cites·26 claims
- 0985US4504206AChainless mold drive for a corrugator or the likeLUPKE MANFRED ARNO ALFRED·Filed 1983·Granted Mar 12, 1985·49 cites·1 claims
- 1085US4305703AComposite die assembly for use in the production of thermoplastic tubingLUPKE MANFRED ARNO ALFRED·Filed 1980·Granted Dec 15, 1981·41 cites·16 claims
- 1184US5324557AMulti-skin annularly ribbed tubeLUPKE MANFRED ARNO ALFRED·Filed 1992·Granted Jun 28, 1994·58 cites·8 claims
- 1278US4770618AExtrusion die for two-ply plastic tubingLUPKE MANFRED ARNO ALFRED·Filed 1986·Granted Sep 13, 1988·41 cites·8 claims
- 1375US9969119B2Mold block returnLUPKE MANFRED ARNO ALFRED·Filed 2015·Granted May 15, 2018·1 cites·10 claims
- 1475US4545751AApparatus for molding of plastic tubingLUPKE MANFRED ARNO ALFRED·Filed 1984·Granted Oct 8, 1985·32 cites·1 claims
- 1574US5002478AImprovements in suction applying mold blocks in pipe forming apparatusLUPKE MANFRED ARNO ALFRED·Filed 1989·Granted Mar 26, 1991·32 cites·4 claims
- 1672US8146620B2Non-circular pipe profileLUPKE MANFRED ARNO ALFRED·Filed 2010·Granted Apr 3, 2012·3 cites·16 claims
- 1769US4325685AApparatus for producing thermoplastic tubing having interchangeable mold blocksLUPKE MANFRED ARNO ALFRED·Filed 1980·Granted Apr 20, 1982·28 cites·8 claims
- 1865US4555230ACalibrator for use in the manufacture of double walled thermoplastic pipeLUPKE MANFRED ARNO ALFRED·Filed 1984·Granted Nov 26, 1985·22 cites·1 claims
- 1963US11156316B2Pipe couplingLUPKE MANFRED ARNO ALFRED·Filed 2019·Granted Oct 26, 2021·0 cites·16 claims
- 2062US12533831B2System and method for mold block exchange on return trackLUPKE MANFRED ARNO ALFRED·Filed 2022·Granted Jan 27, 2026·0 cites·12 claims
- 2161US4587874ARotary punchLUPKE MANFRED ARNO ALFRED·Filed 1984·Granted May 13, 1986·16 cites·9 claims
- 2261US4292014AFeed mechanism comprising an endless member configured as a double helixLUPKE MANFRED ARNO ALFRED·Filed 1980·Granted Sep 29, 1981·16 cites·26 claims
- 2360US4681526AApparatus for molding thermoplastic pipesLUPKE MANFRED ARNO ALFRED·Filed 1986·Granted Jul 21, 1987·20 cites·4 claims
- 2460US4521270AApparatus for forming spirally wound pipeLUPKE MANFRED ARNO ALFRED·Filed 1984·Granted Jun 4, 1985·19 cites·9 claims
- 2559US5023029AMethod and apparatus for producing pipe with annular ribsLUPKE MANFRED ARNO ALFRED·Filed 1989·Granted Jun 11, 1991·19 cites·16 claims
- 2656US11407161B2Finned mold blockLUPKE MANFRED ARNO ALFRED·Filed 2020·Granted Aug 9, 2022·0 cites·17 claims
- 2756US8075295B2Alignable cooling plug for extruderLUPKE MANFRED ARNO ALFRED·Filed 2008·Granted Dec 13, 2011·0 cites·16 claims
- 2856US4936768AExtrusion die for externally ribbed plastic tubingLUPKE MANFRED ARNO ALFRED·Filed 1989·Granted Jun 26, 1990·17 cites·7 claims
- 2954US11052593B2Die head and die tooling spider with spider legs having curved flow guidesLUPKE MANFRED ARNO ALFRED·Filed 2020·Granted Jul 6, 2021·0 cites·14 claims
- 3054US5123827AExtrusion die having elongated extrusion nozzle with facilitates tool changesLUPKE MANFRED ARNO ALFRED·Filed 1990·Granted Jun 23, 1992·17 cites·21 claims
- 3154US2016265700A1Pipe couplingLUPKE MANFRED ARNO ALFRED·Filed 2016·Application pending·0 cites
- 3253US4995800AExtrusion die assemblyLUPKE MANFRED ARNO ALFRED·Filed 1989·Granted Feb 26, 1991·15 cites·5 claims
- 3352US4712993AExtrusion die for externally ribbed plastic tubingLUPKE MANFRED ARNO ALFRED·Filed 1986·Granted Dec 15, 1987·15 cites·4 claims
- 3452US4553923AProducing thermoplastic articles particularly with porous wallsLUPKE MANFRED ARNO ALFRED·Filed 1984·Granted Nov 19, 1985·13 cites·6 claims
- 3551US4731138AApparatus for producing double-walled corrugated pipesLUPKE MANFRED ARNO ALFRED·Filed 1987·Granted Mar 15, 1988·14 cites·1 claims
- 3648US2012085206A1Pipe cut-off apparatusLUPKE MANFRED ARNO ALFRED·Filed 2011·Application pending·0 cites
- 3746US11034073B2Method for forming inline triple wall coupling connectorLUPKE MANFRED ARNO ALFRED·Filed 2015·Granted Jun 15, 2021·0 cites·4 claims
- 3845US8684719B2Die tooling for extruding tubular productLUPKE MANFRED ARNO ALFRED·Filed 2010·Granted Apr 1, 2014·0 cites·13 claims
- 3943US11148342B2Air pressure control for corrugatorLUPKE MANFRED ARNO ALFRED·Filed 2015·Granted Oct 19, 2021·0 cites·16 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →