Inventor · disambiguated record
Norval Stapelfeld
Also filed as: STAPELFELD NORVAL · STAPELFELD NORVAL D
9 granted patents·2 pending applications·1,139 citations·filing 1986–2017
92Inventor score
Top patents by PatentIndex Score
11 records- 0197US4908629AApparatus for locating and/or tracking stolen or missing vehicles and the likeLO JACK CORP·Filed 1988·Granted Mar 13, 1990·277 cites·3 claims
- 0297US4818998AMethod of and system and apparatus for locating and/or tracking stolen or missing vehicles and the likeLO JACK CORP·Filed 1986·Granted Apr 4, 1989·310 cites·52 claims
- 0394US5543776AVehicle security systemWHISTLER CORP·Filed 1993·Granted Aug 6, 1996·256 cites·23 claims
- 0490US6360698B1Animal control systemDOGWATCH INC·Filed 2000·Granted Mar 26, 2002·48 cites·43 claims
- 0587US6575120B1Animal control systemDOGWATCH INC·Filed 2000·Granted Jun 10, 2003·34 cites·18 claims
- 0686US6825768B2Adaptive pet containment system and methodDOGWATCH INC·Filed 2002·Granted Nov 30, 2004·72 cites·22 claims
- 0784US6079367AAnimal training apparatus and methodDOGWATCH INC·Filed 1997·Granted Jun 27, 2000·119 cites·26 claims
- 0878US8006649B2Animal control system having correction monitorDOGWATCH INC·Filed 2007·Granted Aug 30, 2011·8 cites·12 claims
- 0973US6467435B2Animal control systemDOGWATCH INC·Filed 2001·Granted Oct 22, 2002·15 cites·26 claims
- 1049US2019174721A1Animal control system and method providing information access and controlDOGWATCH INC·Filed 2017·Application pending·0 cites
- 1135US2016021850A1Method and Apparatus for Determining a Location of an Animal in an Animal Control SystemDOGWATCH INC·Filed 2015·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →