Inventor · disambiguated record
John B. Rippingale
Also filed as: RIPPINGALE JOHN B
10 granted patents·886 citations·filing 1983–2002
93Inventor score
Files withSCHONSTEDT INSTRUMENT CO8
Top patents by PatentIndex Score
10 records- 0195US4639674AApparatus and method employing extraneous field compensation for locating current-carrying objectsSCHONSTEDT INSTRUMENT CO·Filed 1983·Granted Jan 27, 1987·139 cites·16 claims
- 0294US5006806AMethods and apparatus employing permanent magnets for marking, locating, tracing and identifying hidden objects such as burried fiber optic cablesSCHONSTEDT INSTRUMENT CO·Filed 1989·Granted Apr 9, 1991·152 cites·15 claims
- 0392US4818944AMagnetic locating and tracing system and method using dual-antenna transmitter to distinguish between concealed adjacent objectsSCHONSTEDT INSTRUMENT CO·Filed 1987·Granted Apr 4, 1989·97 cites·24 claims
- 0491US5017873AMethods and apparatus employing permanent magnets for marking, locating, tracing and identifying hidden objects such as buried fiber optic cablesSCHONSTEDT INSTRUMENT CO·Filed 1990·Granted May 21, 1991·130 cites·45 claims
- 0590US5114517AMethods, apparatus and devices relating to magnetic markers for elongated hidden objectsSCHONSTEDT INSTRUMENT CO·Filed 1990·Granted May 19, 1992·106 cites·24 claims
- 0689US5122750AMethods employing permanent magnets for marking, locating, tracing and identifying hidden objects such as buried fiber optic cablesSCHONSTEDT INSTRUMENT CO·Filed 1991·Granted Jun 16, 1992·107 cites·21 claims
- 0787US5206065AMethods, apparatus and devices relating to magnetic markers for elongated hidden objectsSCHONSTEDT INSTRUMENT CO·Filed 1992·Granted Apr 27, 1993·81 cites·1 claims
- 0881US5173139AMethod for providing magnetic markers on elongated hidden objectsSCHONSTEDT INSTRUMENT CO·Filed 1992·Granted Dec 22, 1992·54 cites·8 claims
- 0968US6304163B1Radially magnetized plastic pipeFiled 2000·Granted Oct 16, 2001·11 cites·8 claims
- 1057US6771066B2Printed circuit fluxgate sensor for magnetic gradient detection deviceFiled 2002·Granted Aug 3, 2004·9 cites·17 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →