Robert L. Risberg

Person

Brookfield, WI, US

People

Patents Grantslast 30 patents

Information Patent Grant
Semiconductor device
- Patent number 4,811,072
- Issue date Mar 7, 1989
- Robert L. Risberg
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Stabilized welding power source including a series-resonant current...
- Patent number 4,769,754
- Issue date Sep 6, 1988
- Miller Electric Mfg., Co.
- Jon O. Reynolds
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Semiconductor device
- Patent number 4,623,910
- Issue date Nov 18, 1986
- Robert L. Risberg
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Uninterrupted power system with frequency and phase control
- Patent number 4,465,943
- Issue date Aug 14, 1984
- Robert L. Risberg
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Three phase square wave welding power supply
- Patent number 4,435,632
- Issue date Mar 6, 1984
- Hobart Brothers Company
- Robert L. Risberg
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Solid state frequency converter
- Patent number 4,370,703
- Issue date Jan 25, 1983
- Park-Ohio Industries, Inc.
- Robert L. Risberg
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Wireless remote control for electric welder
- Patent number 4,216,367
- Issue date Aug 5, 1980
- Miller Electric Manufacturing Company
- Robert L. Risberg
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Closed-loop regulating and overhauling load energy dissipating chop...
- Patent number 4,180,767
- Issue date Dec 25, 1979
- Cutler-Hammer, Inc.
- Robert L. Risberg
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Solid state current source polyphase inverter induction motor drive
- Patent number 4,054,818
- Issue date Oct 18, 1977
- Robert L. Risberg
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Robert L. Risberg

Person

Patents Grantslast 30 patents

Semiconductor device

Stabilized welding power source including a series-resonant current...

Semiconductor device

Uninterrupted power system with frequency and phase control

Three phase square wave welding power supply

Solid state frequency converter

Wireless remote control for electric welder

Closed-loop regulating and overhauling load energy dissipating chop...

Solid state current source polyphase inverter induction motor drive