Inventor · disambiguated record
Douglas I. Ayerst
Also filed as: AYERST DOUGLAS I · AYERST DOUGLAS IRVIN
25 granted patents·2 pending applications·1,167 citations·filing 1993–2012
97Inventor score
Top patents by PatentIndex Score
27 records- 0195US5740534AMethod for determining available frequencies in selective call receiversMOTOROLA INC·Filed 1996·Granted Apr 14, 1998·295 cites·16 claims
- 0292US5761196ACode division multiple access (CDMA) inbound messaging system utilizing re-use of sequencesFiled 1994·Granted Jun 2, 1998·102 cites·13 claims
- 0385US6069886ASystem controlled asymmetrical automatic repeat request protocolFiled 1997·Granted May 30, 2000·128 cites·1 claims
- 0483US5638369AMethod and apparatus for inbound channel selection in a communication systemMOTOROLA INC·Filed 1995·Granted Jun 10, 1997·118 cites·20 claims
- 0577US5323418ACode division multiple access (CDMA) inbound messaging system utilizing interference cancellation to recover inbound messagesMOTOROLA INC·Filed 1993·Granted Jun 21, 1994·52 cites·19 claims
- 0676US5473612AMethod and apparatus for minimizing false detection of packet data in a communication receiverMOTOROLA INC·Filed 1994·Granted Dec 5, 1995·80 cites·20 claims
- 0771US5799012ASystem controlled asymmetrical automatic repeat request protocol methodMOTOROLA INC·Filed 1996·Granted Aug 25, 1998·78 cites·9 claims
- 0868US9003182B2Communication system and method for securely communicating a message between correspondents through an intermediary terminalDAVIS WALTER LEE·Filed 2012·Granted Apr 7, 2015·2 cites·17 claims
- 0962US6515971B2Method and apparatus to enable background scanningMOTOROLA INC·Filed 2000·Granted Feb 4, 2003·8 cites·6 claims
- 1060US5793756AMethod and apparatus for organizing and recovering information communicated in a radio communication systemMOTOROLA INC·Filed 1996·Granted Aug 11, 1998·37 cites·17 claims
- 1156US5712624AMethod and apparatus for optimizing receiver synchronization in a radio communication systemMOTOROLA INC·Filed 1995·Granted Jan 27, 1998·36 cites·11 claims
- 1255US5381447ACode division multiple access messaging system for providing seed information based on times of inbound messagesMOTOROLA INC·Filed 1994·Granted Jan 10, 1995·20 cites·5 claims
- 1354US5644568AMethod and apparatus for organizing and recovering information communicated in a radio communication systemMOTOROLA INC·Filed 1995·Granted Jul 1, 1997·29 cites·6 claims
- 1452US5878035AMethod and apparatus for mixing protocols in a radio messaging systemMOTOROLA INC·Filed 1997·Granted Mar 2, 1999·19 cites·9 claims
- 1550US6108544AMethod and apparatus for partial coverage zone selective call communicationMOTOROLA INC·Filed 1997·Granted Aug 22, 2000·25 cites·17 claims
- 1650US5752166AMethod and apparatus for controlling how a receiver responds to a messageMOTOROLA INC·Filed 1996·Granted May 12, 1998·25 cites·19 claims
- 1750US2007150740A1Method for providing information security for wireless transmissionsDAVIS WALTER L·Filed 2006·Application pending·0 cites
- 1848US2011010540A1Method for Providing Information Security for Wireless TransmissionsCERTICOM CORP·Filed 2010·Application pending·0 cites
- 1946US6141535ACommunication systems for controlling registration of selective call devicesMOTOROLA INC·Filed 1999·Granted Oct 31, 2000·20 cites·24 claims
- 2044US5521926AMethod and apparatus for improved message reception at a fixed system receiverMOTOROLA INC·Filed 1994·Granted May 28, 1996·26 cites·21 claims
- 2143US5875387AMethod and apparatus for receiving a radio signal within a home control channel in a multichannel radio communication systemMOTOROLA INC·Filed 1995·Granted Feb 23, 1999·18 cites·25 claims
- 2239US5689805ACommunication system and method providing minimum message transmission delayMOTOROLA INC·Filed 1995·Granted Nov 18, 1997·12 cites·21 claims
- 2336US5649302AMethod and apparatus for identifying an inbound message in a radio communication systemMOTOROLA INC·Filed 1994·Granted Jul 15, 1997·15 cites·23 claims
- 2435US6611197B1Selective call transceiver and method of re-registering sameMOTOROLA INC·Filed 1997·Granted Aug 26, 2003·10 cites·9 claims
- 2534US5649294AMethod and apparatus for delivering global event information in a radio communication systemMOTOROLA INC·Filed 1995·Granted Jul 15, 1997·7 cites·18 claims
- 2631US5923266AMethod for dynamically changing control frames for selective call receiving devicesMOTOROLA INC·Filed 1998·Granted Jul 13, 1999·3 cites·26 claims
- 2727US5710547ASelective call transceiver and method of re-registering sameMOTOROLA INC·Filed 1995·Granted Jan 20, 1998·2 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →