Inventor · disambiguated record
David E. Chupka
Also filed as: CHUPKA DAVID E · GETZ LYNN L
30 granted patents·1 pending application·664 citations·filing 1974–2009
97Inventor score
Top patents by PatentIndex Score
31 records- 0191US5064537ASeamless screen cylinder with laser cut openingsBLACK CLAWSON CO·Filed 1989·Granted Nov 12, 1991·76 cites·9 claims
- 0290US4725007AApparatus for pulping high consistency paper making stockBLACK CLAWSON CO·Filed 1986·Granted Feb 16, 1988·42 cites·2 claims
- 0389US4795560AScreen platesBLACK CLAWSON CO·Filed 1987·Granted Jan 3, 1989·62 cites·16 claims
- 0489US4155841AHigh turbulence screenBLACK CLAWSON CO·Filed 1977·Granted May 22, 1979·31 cites·10 claims
- 0585US4081147AReversible disk refiner platesBLACK CLAWSON CO·Filed 1976·Granted Mar 28, 1978·29 cites·2 claims
- 0683US4410424AScreening apparatus for paper making stockBLACK CLAWSON CO·Filed 1982·Granted Oct 18, 1983·24 cites·5 claims
- 0782US5262003AMethod and system for defibering paper making materialsBLACK CLAWSON CO·Filed 1991·Granted Nov 16, 1993·44 cites·11 claims
- 0876US4383918AHigh turbulence screenBLACK CLAWSON CO·Filed 1980·Granted May 17, 1983·17 cites·11 claims
- 0975US4919797AScreening apparatus for paper making stockBLACK CLAWSON CO·Filed 1989·Granted Apr 24, 1990·34 cites·8 claims
- 1075US4885090AScreen platesBLACK CLAWSON CO·Filed 1988·Granted Dec 5, 1989·38 cites·7 claims
- 1174US7628890B2Extraction bedplate with laser or water jet cut aperturesKADANT BLACK CLAWSON INC·Filed 2002·Granted Dec 8, 2009·7 cites·8 claims
- 1274US4356084ASelf-sealing valve assembly to facilitate unplugging of a centrifugal cleanerBLACK CLAWSON CO·Filed 1979·Granted Oct 26, 1982·23 cites·10 claims
- 1373US3970548AApparatus for screening paper fiber stockBLACK CLAWSON CO·Filed 1975·Granted Jul 20, 1976·14 cites·6 claims
- 1470US4622132ALiquid cyclone or centrifugal cleanerBLACK CLAWSON CO·Filed 1985·Granted Nov 11, 1986·25 cites·10 claims
- 1569US5234172AHigh pressure water jet comminutingBLACK CLAWSON CO·Filed 1991·Granted Aug 10, 1993·24 cites·13 claims
- 1667US5582686AHigh pressure water jet comminutingBLACK CLAWSON CO·Filed 1993·Granted Dec 10, 1996·17 cites·6 claims
- 1766US4901417AMethod of finishing screen platesBLACK CLAWSON CO·Filed 1988·Granted Feb 20, 1990·14 cites·8 claims
- 1865US4171101AMethod of operating a disk refiner provided with reversible refining platesBLACK CLAWSON CO·Filed 1978·Granted Oct 16, 1979·17 cites·1 claims
- 1963US8172985B2Extraction bedplate with laser or water jet cut aperturesCHUPKA DAVID E·Filed 2009·Granted May 8, 2012·1 cites·5 claims
- 2062US4663030ADisk rotor for selectifier screenBLACK CLAWSON CO·Filed 1986·Granted May 5, 1987·26 cites·2 claims
- 2158US2007245907A1Extraction bedplate with laser or water jet cut aperturesKADANT BLACK CLAWSON INC·Filed 2007·Application pending·0 cites
- 2256US4328096ADual flow screening apparatusBLACK CLAWSON CO·Filed 1981·Granted May 4, 1982·16 cites·10 claims
- 2351US3947314AMethod of treating paper fibers in a stationary screenBLACK CLAWSON CO·Filed 1974·Granted Mar 30, 1976·15 cites·8 claims
- 2450US4451358ANoncircular rejects outlet for cyclone separatorBLACK CLAWSON CO·Filed 1983·Granted May 29, 1984·10 cites·9 claims
- 2548US5382327AApparatus for thickening pulp and paper stockBLACK CLAWSON CO·Filed 1991·Granted Jan 17, 1995·14 cites·6 claims
- 2647US5078275AScreening apparatus for paper making stockBLACK CLAWSON CO·Filed 1990·Granted Jan 7, 1992·8 cites·10 claims
- 2742US5021159AApparatus for thickening pulp and paper stockBLACK CLAWSON CO·Filed 1988·Granted Jun 4, 1991·9 cites·3 claims
- 2841US5186791AApparatus for thickening pulp and paper stockBLACK CLAWSON CO·Filed 1992·Granted Feb 16, 1993·10 cites·2 claims
- 2938US5367894AApparatus and method for washing cellulosic pulpBLACK CLAWSON CO·Filed 1993·Granted Nov 29, 1994·6 cites·8 claims
- 3036US6193073B1Paper stock screening apparatus and methodTHERMO BLACK CLAWSON INC·Filed 1998·Granted Feb 27, 2001·7 cites·4 claims
- 3132US5591336AApparatus for dewatering and or washing papermaking stockBLACK CLAWSON CO·Filed 1994·Granted Jan 7, 1997·4 cites·12 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →