Walter F.J. Crewson

Person

Munsonville, NH, US

People

Patents Grantslast 30 patents

Information Patent Grant
Capacitor charger system, power modulator and resonant power converter
- Patent number 9,083,256
- Issue date Jul 14, 2015
- Scandinova Systems AB
- Walter Frederick John Crewson
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Capacitor charger system and digital control module and isolated ac...
- Patent number 8,797,001
- Issue date Aug 5, 2014
- Scandinova Systems AB
- Klas Elmqvist
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Electrical power switching with efficient switch protection
- Patent number 8,279,571
- Issue date Oct 2, 2012
- Scandinova Systems AB
- Walter Crewson
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Electrical power switching with efficient switch protection
- Patent number 7,885,049
- Issue date Feb 8, 2011
- Scandinova Systems AB
- Walter Crewson
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Apparatus and method of generating a ringing magnetic pulse for the...
- Patent number 7,524,424
- Issue date Apr 28, 2009
- Clearwater Systems Corporation
- Kenneth E. Wittmer
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Method and apparatus for treating fluids
- Patent number 7,524,413
- Issue date Apr 28, 2009
- Clearwater Systems Corporation
- Kenneth E. Wittmer
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
System and method of generating a ringing magnetic pulse for the tr...
- Patent number 7,524,423
- Issue date Apr 28, 2009
- Clearwater Systems Corporation
- Kenneth E. Wittmer
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Power modulator having at least one pulse generating module; multip...
- Patent number 6,741,484
- Issue date May 25, 2004
- ScandiNova AB
- Walter Crewson
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
System and method of irradiating products being conveyed past an el...
- Patent number 6,686,596
- Issue date Feb 3, 2004
- ScandiNova AB
- David Woodburn
- G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information Patent Grant
Beam delivery system
- Patent number 6,617,586
- Issue date Sep 9, 2003
- ScandiNova AB
- David Woodburn
- G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information Patent Grant
Rotationally symmetrical high-voltage pulse transformer with tesla...
- Patent number 6,163,242
- Issue date Dec 19, 2000
- Scanditronix Medical AB
- Walter Frederick John Crewson
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Apparatus for treating flowing liquid with electromagnetic flux
- Patent number 6,063,267
- Issue date May 16, 2000
- Clearwater Systems, LLC
- Walter F. J. Crewson
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Power modulator
- Patent number 5,905,646
- Issue date May 18, 1999
- Scanditronix Medical AB
- Walter Frederick John Crewson
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
CAPACITOR CHARGER SYSTEM, POWER MODULATOR AND RESONANT POWER CONVERTER
- Publication number 20140176086
- Publication date Jun 26, 2014
- SCANDINOVA SYSTEMS AB
- Walter Frederick John CREWSON
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Electrical power switching with efficient switch protection
- Publication number 20110075310
- Publication date Mar 31, 2011
- SCANDINOVA SYSTEMS AB
- Walter Crewson
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
METHOD AND APPARATUS FOR TREATING FLUIDS
- Publication number 20090236294
- Publication date Sep 24, 2009
- Clearwater Systems Corporation
- Kenneth E. Wittmer
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
SYSTEM AND METHOD OF GENERATING A RINGING MAGNETIC PULSE FOR THE TR...
- Publication number 20090229982
- Publication date Sep 17, 2009
- Clearwater Systems Corporation
- Kenneth E. Wittmer
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Electrical Power Switching With Efficient Switch Protection
- Publication number 20080253052
- Publication date Oct 16, 2008
- Walter Crewson
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Apparatus and method of generating a ringing magnetic pulse for the...
- Publication number 20070295671
- Publication date Dec 27, 2007
- Clearwater Systems Corporation
- Kenneth E. Wittmer
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Method and apparatus for treating fluids
- Publication number 20070051685
- Publication date Mar 8, 2007
- Clearwater Systems Corporation
- Kenneth E. Wittmer
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Method and apparatus for treating fluids
- Publication number 20060196817
- Publication date Sep 7, 2006
- Clearwater Systems Corporation
- Walter F.J. Crewson
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
System and method of generating a ringing magnetic pulse for the tr...
- Publication number 20060124557
- Publication date Jun 15, 2006
- Clearwater Systems, LLC
- Kenneth E. Wittmer
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
System and method of irradiating products being conveyed past an el...
- Publication number 20030155526
- Publication date Aug 21, 2003
- David Woodburn
- G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information Patent Application
BEAM DELIVERY SYSTEM
- Publication number 20030136917
- Publication date Jul 24, 2003
- David Woodburn
- G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information Patent Application
Power modulator having at least one pulse generating module; multip...
- Publication number 20030128554
- Publication date Jul 10, 2003
- Walter Crewson
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR

Walter F.J. Crewson

Person

Patents Grantslast 30 patents

Capacitor charger system, power modulator and resonant power converter

Capacitor charger system and digital control module and isolated ac...

Electrical power switching with efficient switch protection

Electrical power switching with efficient switch protection

Apparatus and method of generating a ringing magnetic pulse for the...

Method and apparatus for treating fluids

System and method of generating a ringing magnetic pulse for the tr...

Power modulator having at least one pulse generating module; multip...

System and method of irradiating products being conveyed past an el...

Beam delivery system

Rotationally symmetrical high-voltage pulse transformer with tesla...

Apparatus for treating flowing liquid with electromagnetic flux

Power modulator

Patents Applicationslast 30 patents

CAPACITOR CHARGER SYSTEM, POWER MODULATOR AND RESONANT POWER CONVERTER

Electrical power switching with efficient switch protection

METHOD AND APPARATUS FOR TREATING FLUIDS

SYSTEM AND METHOD OF GENERATING A RINGING MAGNETIC PULSE FOR THE TR...

Electrical Power Switching With Efficient Switch Protection

Apparatus and method of generating a ringing magnetic pulse for the...

Method and apparatus for treating fluids

Method and apparatus for treating fluids

System and method of generating a ringing magnetic pulse for the tr...

System and method of irradiating products being conveyed past an el...

BEAM DELIVERY SYSTEM

Power modulator having at least one pulse generating module; multip...