Inventor · disambiguated record
Al Langsenkamp
Also filed as: LANGSENKAMP AL
8 granted patents·478 citations·filing 1994–2005
91Inventor score
Top patents by PatentIndex Score
8 records- 0186US5559867AAutomated calling system with database updatingSIGMA MICRO CORP·Filed 1994·Granted Sep 24, 1996·128 cites·16 claims
- 0282US5912947APublic notification system and methodSIGMA MICRO CORP·Filed 1996·Granted Jun 15, 1999·96 cites·15 claims
- 0381US8073422B2Satellite radio warning system and methodLANGSENKAMP AL·Filed 2005·Granted Dec 6, 2011·18 cites·15 claims
- 0479US7558558B2Automated mobile notification systemPLANT EQUIP INC DBA PLANTCML·Filed 2004·Granted Jul 7, 2009·39 cites·23 claims
- 0575US6678358B2Automated nodal calling systemSIGMA COMMUNICATIONS INC·Filed 2001·Granted Jan 13, 2004·26 cites·8 claims
- 0675US6009149AAutomated calling system with database updating by calleeSIGMA MICRO CORP·Filed 1998·Granted Dec 28, 1999·66 cites·14 claims
- 0769US6567504B1Automated calling system with database updatingSIGMA COMMUNICATIONS INC·Filed 1999·Granted May 20, 2003·66 cites·20 claims
- 0861US6556664B1Public notification system and methodSIGMA COMMUNICATIONS INC·Filed 1999·Granted Apr 29, 2003·39 cites·20 claims
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