John B. Rippingale

Person

Leesburg, VA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Printed circuit fluxgate sensor for magnetic gradient detection device
- Patent number 6,771,066
- Issue date Aug 3, 2004
- John B. Rippingale
- G01 - MEASURING TESTING
Information Patent Grant
Radially magnetized plastic pipe
- Patent number 6,304,163
- Issue date Oct 16, 2001
- John B. Rippingale
- G02 - OPTICS
Information Patent Grant
Methods, apparatus and devices relating to magnetic markers for elo...
- Patent number 5,206,065
- Issue date Apr 27, 1993
- Schonstedt Instrument Company
- John B. Rippingale
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Method for providing magnetic markers on elongated hidden objects
- Patent number 5,173,139
- Issue date Dec 22, 1992
- Schonstedt Instrument Company
- John B. Rippingale
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Methods employing permanent magnets for marking, locating, tracing...
- Patent number 5,122,750
- Issue date Jun 16, 1992
- Schonstedt Instrument Company
- John B. Rippingale
- G02 - OPTICS
Information Patent Grant
Methods, apparatus and devices relating to magnetic markers for elo...
- Patent number 5,114,517
- Issue date May 19, 1992
- Schonstedt Instrument Company
- John B. Rippingale
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Methods and apparatus employing permanent magnets for marking, loca...
- Patent number 5,017,873
- Issue date May 21, 1991
- Schonstedt Instrument Company
- John B. Rippingale
- G02 - OPTICS
Information Patent Grant
Methods and apparatus employing permanent magnets for marking, loca...
- Patent number 5,006,806
- Issue date Apr 9, 1991
- Schonstedt Instrument Company
- John B. Rippingale
- G02 - OPTICS
Information Patent Grant
Magnetic locating and tracing system and method using dual-antenna...
- Patent number 4,818,944
- Issue date Apr 4, 1989
- Schonstedt Instrument Company
- John B. Rippingale
- G01 - MEASURING TESTING
Information Patent Grant
Apparatus and method employing extraneous field compensation for lo...
- Patent number 4,639,674
- Issue date Jan 27, 1987
- Schonstedt Instrument Company
- John B. Rippingale
- G01 - MEASURING TESTING

Patents Applicationslast 30 patents

Information Patent Application
Printed circuit fluxgate sensor
- Publication number 20040027120
- Publication date Feb 12, 2004
- John B. Rippingale
- G01 - MEASURING TESTING

John B. Rippingale

Person

Patents Grantslast 30 patents

Printed circuit fluxgate sensor for magnetic gradient detection device

Radially magnetized plastic pipe

Methods, apparatus and devices relating to magnetic markers for elo...

Method for providing magnetic markers on elongated hidden objects

Methods employing permanent magnets for marking, locating, tracing...

Methods, apparatus and devices relating to magnetic markers for elo...

Methods and apparatus employing permanent magnets for marking, loca...

Methods and apparatus employing permanent magnets for marking, loca...

Magnetic locating and tracing system and method using dual-antenna...

Apparatus and method employing extraneous field compensation for lo...

Patents Applicationslast 30 patents

Printed circuit fluxgate sensor