Inventor · disambiguated record
David Irwin Lappen
Also filed as: LAPPEN DAVID I · LAPPEN DAVID IRWIN
5 granted patents·165 citations·filing 1985–1999
84Inventor score
Top patents by PatentIndex Score
5 records- 0177US4956775AObject sensor for detecting characteristics such as color for gamesKLAMER R B·Filed 1985·Granted Sep 11, 1990·62 cites·6 claims
- 0264US6462868B1Display device for both hardcopy and digital imagesBUY PHONE INC·Filed 1999·Granted Oct 8, 2002·35 cites·35 claims
- 0352US5930351ARemote telephone ringer controllerFiled 1996·Granted Jul 27, 1999·26 cites·23 claims
- 0452US5812785AMethod and apparatus for monitoring video signals in a computerBUY PHONE INC·Filed 1997·Granted Sep 22, 1998·26 cites·16 claims
- 0543US5687096AMethod and apparatus for monitoring video signals in a computerBUY PHONE INC·Filed 1996·Granted Nov 11, 1997·16 cites·62 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →