Craig A. Willkens

Person

Worcester, MA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Ceramic igniters
- Patent number 8,193,469
- Issue date Jun 5, 2012
- Coorstek, Inc.
- Craig A. Willkens
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Grant
Ceramic igniters
- Patent number 7,329,837
- Issue date Feb 12, 2008
- Saint-Gobain Ceramics & Plastics, Inc.
- Craig A. Willkens
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Grant
Compositions for ceramic igniters
- Patent number 7,195,722
- Issue date Mar 27, 2007
- Saint-Gobain Ceramics & Plastics, Inc.
- Roger J. Lin
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Grant
Particulate filter for purifying exhaust gases of internal combusti...
- Patent number 6,989,048
- Issue date Jan 24, 2006
- Saint-Gobain Centre de Recherches et d'Etudes Europeen
- Sébastien Bardon
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Compositions for ceramic igniters
- Patent number 6,582,629
- Issue date Jun 24, 2003
- Saint-Gobain Ceramics & Plastics, Inc.
- Roger J. Lin
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Grant
Aging resistant, porous silicon Carbide ceramic igniter
- Patent number 6,562,745
- Issue date May 13, 2003
- Saint-Gobain Ceramics & Plastics, Inc.
- Craig A. Willkens
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Multiple hot zone igniters
- Patent number 6,474,492
- Issue date Nov 5, 2002
- Saint-Gobain Ceramics & Plastics, Inc.
- Craig A. Willkens
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Aging resistant porous silicon carbide ceramic igniter
- Patent number 6,297,183
- Issue date Oct 2, 2001
- Saint-Gobain Ceramics and Plastics, Inc.
- Craig A. Willkens
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Ceramic igniters and methods for using and producing same
- Patent number 6,278,087
- Issue date Aug 21, 2001
- Saint-Gobain Industrial Ceramics, Inc.
- Craig A. Willkens
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Grant
Ceramic igniter having improved oxidation resistance, and method of...
- Patent number 6,028,292
- Issue date Feb 22, 2000
- Saint-Gobain Industrial Ceramics, Inc.
- Craig A. Willkens
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Grant
Method of heating a stovetop range using a continuously energized c...
- Patent number 6,002,107
- Issue date Dec 14, 1999
- Saint-Gobain Industrial Ceramics, Inc.
- Craig A. Willkens
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Grant
Method of heating a stovetop range using a ceramic igniter
- Patent number 5,892,201
- Issue date Apr 6, 1999
- Saint-Gobain Industrial Ceramics, Inc.
- Dean Croucher
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Grant
High voltage ceramic igniter
- Patent number 5,820,789
- Issue date Oct 13, 1998
- Saint Gobain/Norton Industrail Ceramics Corp.
- Craig A. Willkens
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Grant
Ceramic igniter with hot zone thickness of 0.019 inches or less
- Patent number 5,801,361
- Issue date Sep 1, 1998
- Saint Gobain/Norton Industrial Ceramics Corporation
- Craig A. Willkens
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Grant
Match head ceramic igniter and method of using same
- Patent number 5,786,565
- Issue date Jul 28, 1998
- Saint Gobain/Norton Industrial Ceramics Corporation
- Craig A. Willkens
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Grant
Method of forming ceramic igniters
- Patent number 5,785,911
- Issue date Jul 28, 1998
- Saint Gobain/Norton Industrial Ceramics Corp.
- Craig A. Willkens
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Silicon nitride having a high tensile strength
- Patent number 5,759,481
- Issue date Jun 2, 1998
- Saint Gobain/Norton Industrial Ceramics Corp.
- Vimal K. Pujari
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Silicon nitride having a high tensile strength
- Patent number 5,571,760
- Issue date Nov 5, 1996
- Saint Gobain/Norton Industrial Ceramics Corporation
- Vimal K. Pujari
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Composition for small ceramic igniters
- Patent number 5,514,630
- Issue date May 7, 1996
- Saint Gobain/Norton Industrial Ceramics Corp.
- Craig A. Willkens
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Coarse reaction bonded silicon nitride
- Patent number 5,510,304
- Issue date Apr 23, 1996
- Saint-Gobain/Norton Industrial Ceramic Corporation
- Craig A. Willkens
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Pressure casting ceramic slurries
- Patent number 5,229,339
- Issue date Jul 20, 1993
- Norton Company
- Vimal K. Pujari
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Process for the manufacture of friable silicon nitride bodies
- Patent number 5,061,416
- Issue date Oct 29, 1991
- Norton Company
- Craig A. Willkens
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Reaction bonded silicon nitride filtration membranes
- Patent number 5,004,544
- Issue date Apr 2, 1991
- Norton Company
- Robert A. Hay
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Silicon nitride vacuum furnace process
- Patent number 4,970,057
- Issue date Nov 13, 1990
- Norton Company
- Craig A. Willkens
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Fiber-reinforced silicon nitride composite ceramics
- Patent number 4,885,199
- Issue date Dec 5, 1989
- Norton Company
- Normand D. Corbin
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES

Patents Applicationslast 30 patents

Information Patent Application
Ceramic Heating Device
- Publication number 20110253696
- Publication date Oct 20, 2011
- Michael J. Hanagan
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Application
Ceramic igniters
- Publication number 20080314890
- Publication date Dec 25, 2008
- Saint-Gobain Ceramics & Plastics, Inc.
- Craig A. Willkens
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Application
Injection molding of ceramic elements
- Publication number 20080145672
- Publication date Jun 19, 2008
- Saint-Gobain Ceramics & Plastics, Inc.
- Craig A. Willkens
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Application
Injection molding of ceramic elements
- Publication number 20080116192
- Publication date May 22, 2008
- Saint-Gobain Ceramics & Plastics, Inc.
- Suresh Annavarapu
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Application
Ceramic heating elements
- Publication number 20070295709
- Publication date Dec 27, 2007
- Saint-Gobain Ceramics & Plastics, Inc.
- Craig A. Willkens
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Application
Ceramic igniters
- Publication number 20060201925
- Publication date Sep 14, 2006
- Saint-Gobain Ceramics & Plastics, Inc.
- Taehwan Yu
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Application
Particulate filter for purifying exhaust gases of internal combusti...
- Publication number 20040025500
- Publication date Feb 12, 2004
- Sebastien Bardon
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
Compositions for ceramic igniters
- Publication number 20030160220
- Publication date Aug 28, 2003
- Saint-Gobain Industrial Ceramics, Inc.
- Roger J. Lin
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Application
Ceramic igniters
- Publication number 20020150851
- Publication date Oct 17, 2002
- Craig A. Willkens
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Application
MULTIPLE HOT ZONE IGNITERS
- Publication number 20020113051
- Publication date Aug 22, 2002
- Craig A. Willkens
- B32 - LAYERED PRODUCTS
Information Patent Application
Aging resistant, porous silicon carbide ceramic igniter
- Publication number 20020010067
- Publication date Jan 24, 2002
- Craig A. Willkens
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES

Craig A. Willkens

Person

Patents Grantslast 30 patents

Ceramic igniters

Ceramic igniters

Compositions for ceramic igniters

Particulate filter for purifying exhaust gases of internal combusti...

Compositions for ceramic igniters

Aging resistant, porous silicon Carbide ceramic igniter

Multiple hot zone igniters

Aging resistant porous silicon carbide ceramic igniter

Ceramic igniters and methods for using and producing same

Ceramic igniter having improved oxidation resistance, and method of...

Method of heating a stovetop range using a continuously energized c...

Method of heating a stovetop range using a ceramic igniter

High voltage ceramic igniter

Ceramic igniter with hot zone thickness of 0.019 inches or less

Match head ceramic igniter and method of using same

Method of forming ceramic igniters

Silicon nitride having a high tensile strength

Silicon nitride having a high tensile strength

Composition for small ceramic igniters

Coarse reaction bonded silicon nitride

Pressure casting ceramic slurries

Process for the manufacture of friable silicon nitride bodies

Reaction bonded silicon nitride filtration membranes

Silicon nitride vacuum furnace process

Fiber-reinforced silicon nitride composite ceramics

Patents Applicationslast 30 patents

Ceramic Heating Device

Ceramic igniters

Injection molding of ceramic elements

Injection molding of ceramic elements

Ceramic heating elements

Ceramic igniters

Particulate filter for purifying exhaust gases of internal combusti...

Compositions for ceramic igniters

Ceramic igniters

MULTIPLE HOT ZONE IGNITERS

Aging resistant, porous silicon carbide ceramic igniter