David E. Chupka

Person

Middletown, OH, US

People

Patents Grantslast 30 patents

Information Patent Grant
Extraction bedplate with laser or water jet cut apertures
- Patent number 8,172,985
- Issue date May 8, 2012
- Kadant Black Clawson Inc.
- David E. Chupka
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Extraction bedplate with laser or water jet cut apertures
- Patent number 7,628,890
- Issue date Dec 8, 2009
- Kadant Black Clawson Inc.
- David E. Chupka
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Paper stock screening apparatus and method
- Patent number 6,193,073
- Issue date Feb 27, 2001
- Thermo Black Clawson Inc.
- David E. Chupka
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Apparatus for dewatering and or washing papermaking stock
- Patent number 5,591,336
- Issue date Jan 7, 1997
- The Black Clawson Company
- Peter Seifert
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
High pressure water jet comminuting
- Patent number 5,582,686
- Issue date Dec 10, 1996
- The Black Clawson Company
- David E. Chupka
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Apparatus for thickening pulp and paper stock
- Patent number 5,382,327
- Issue date Jan 17, 1995
- The Black Clawson Company
- Peter Seifert
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Apparatus and method for washing cellulosic pulp
- Patent number 5,367,894
- Issue date Nov 29, 1994
- The Black Clawson Company
- Clinton R. Parks
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method and system for defibering paper making materials
- Patent number 5,262,003
- Issue date Nov 16, 1993
- The Black Clawson Company
- David E. Chupka
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
High pressure water jet comminuting
- Patent number 5,234,172
- Issue date Aug 10, 1993
- The Black Clawson Company
- David E. Chupka
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Apparatus for thickening pulp and paper stock
- Patent number 5,186,791
- Issue date Feb 16, 1993
- The Black Clawson Company
- Peter Seifert
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Screening apparatus for paper making stock
- Patent number 5,078,275
- Issue date Jan 7, 1992
- The Black Clawson Company
- David E. Chupka
- B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information Patent Grant
Seamless screen cylinder with laser cut openings
- Patent number 5,064,537
- Issue date Nov 12, 1991
- The Black Clawson Company
- David E. Chupka
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Apparatus for thickening pulp and paper stock
- Patent number 5,021,159
- Issue date Jun 4, 1991
- The Black Clawson Company
- Terry L. Bliss
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Screening apparatus for paper making stock
- Patent number 4,919,797
- Issue date Apr 24, 1990
- The Black Clawson Company
- David E. Chupka
- B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information Patent Grant
Method of finishing screen plates
- Patent number 4,901,417
- Issue date Feb 20, 1990
- The Black Clawson Company
- David E. Chupka
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Screen plates
- Patent number 4,885,090
- Issue date Dec 5, 1989
- The Black Clawson Company
- David E. Chupka
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Screen plates
- Patent number 4,795,560
- Issue date Jan 3, 1989
- The Black Clawson Company
- David E. Chupka
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Apparatus for pulping high consistency paper making stock
- Patent number 4,725,007
- Issue date Feb 16, 1988
- The Black Clawson Company
- David E. Chupka
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Disk rotor for selectifier screen
- Patent number 4,663,030
- Issue date May 5, 1987
- The Black Clawson Company
- David E. Chupka
- B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information Patent Grant
Liquid cyclone or centrifugal cleaner
- Patent number 4,622,132
- Issue date Nov 11, 1986
- The Black Clawson Company
- David E. Chupka
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Noncircular rejects outlet for cyclone separator
- Patent number 4,451,358
- Issue date May 29, 1984
- The Black Clawson Company
- David E. Chupka
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Screening apparatus for paper making stock
- Patent number 4,410,424
- Issue date Oct 18, 1983
- The Black Clawson Company
- David E. Chupka
- B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information Patent Grant
High turbulence screen
- Patent number 4,383,918
- Issue date May 17, 1983
- The Black Clawson Company
- David E. Chupka
- B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information Patent Grant
Self-sealing valve assembly to facilitate unplugging of a centrifug...
- Patent number 4,356,084
- Issue date Oct 26, 1982
- The Black Clawson Company
- Derald R. Hatton
- B04 - CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL...
Information Patent Grant
Dual flow screening apparatus
- Patent number 4,328,096
- Issue date May 4, 1982
- The Black Clawson Company
- David E. Chupka
- B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information Patent Grant
Method of operating a disk refiner provided with reversible refinin...
- Patent number 4,171,101
- Issue date Oct 16, 1979
- The Black Clawson Company
- Peter Seifert
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
High turbulence screen
- Patent number 4,155,841
- Issue date May 22, 1979
- The Black Clawson Company
- David E. Chupka
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Reversible disk refiner plates
- Patent number 4,081,147
- Issue date Mar 28, 1978
- The Black Clawson Company
- Peter Seifert
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Apparatus for screening paper fiber stock
- Patent number 3,970,548
- Issue date Jul 20, 1976
- The Black Clawson Company
- Peter Seifert
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method of treating paper fibers in a stationary screen
- Patent number 3,947,314
- Issue date Mar 30, 1976
- The Black Clawson Company
- David E. Chupka
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE

Patents Applicationslast 30 patents

Information Patent Application
Extraction bedplate with laser or water jet cut apertures
- Publication number 20100065670
- Publication date Mar 18, 2010
- KADANT BLACK CLAWSON INC.
- David E. Chupka
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
Extraction bedplate with laser or water jet cut apertures
- Publication number 20070245907
- Publication date Oct 25, 2007
- KADANT BLACK CLAWSON INC.
- David E. Chupka
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
Extraction bedplate with laser or water jet cut apertures
- Publication number 20050039615
- Publication date Feb 24, 2005
- David E Chupka
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE

David E. Chupka

Person

Patents Grantslast 30 patents

Extraction bedplate with laser or water jet cut apertures

Extraction bedplate with laser or water jet cut apertures

Paper stock screening apparatus and method

Apparatus for dewatering and or washing papermaking stock

High pressure water jet comminuting

Apparatus for thickening pulp and paper stock

Apparatus and method for washing cellulosic pulp

Method and system for defibering paper making materials

High pressure water jet comminuting

Apparatus for thickening pulp and paper stock

Screening apparatus for paper making stock

Seamless screen cylinder with laser cut openings

Apparatus for thickening pulp and paper stock

Screening apparatus for paper making stock

Method of finishing screen plates

Screen plates

Screen plates

Apparatus for pulping high consistency paper making stock

Disk rotor for selectifier screen

Liquid cyclone or centrifugal cleaner

Noncircular rejects outlet for cyclone separator

Screening apparatus for paper making stock

High turbulence screen

Self-sealing valve assembly to facilitate unplugging of a centrifug...

Dual flow screening apparatus

Method of operating a disk refiner provided with reversible refinin...

High turbulence screen

Reversible disk refiner plates

Apparatus for screening paper fiber stock

Method of treating paper fibers in a stationary screen

Patents Applicationslast 30 patents

Extraction bedplate with laser or water jet cut apertures

Extraction bedplate with laser or water jet cut apertures

Extraction bedplate with laser or water jet cut apertures