Inventor · disambiguated record
Alastair Sibbald
Also filed as: SIBBALD ALASTAIR
47 granted patents·11 pending applications·1,779 citations·filing 1982–2022
99Inventor score
Files withCENTRAL RESEARCH LAB LTD11EMI PLC THORN10SIBBALD ALASTAIR10CIRRUS LOGIC INT SEMICONDUCTOR LTD7CREATIVE TECH LTD6
Top patents by PatentIndex Score
58 records- 0197US8472636B2Ambient noise reduction arrangementsSIBBALD ALASTAIR·Filed 2007·Granted Jun 25, 2013·40 cites·23 claims
- 0296US4764797AChemical-sensitive semiconductor deviceEMI PLC THORN·Filed 1986·Granted Aug 16, 1988·185 cites·12 claims
- 0396US4437969AOffset-gate chemical-sensitive field-effect transistors (OG-CHEMFETS) with electrolytically-programmable selectivityCORNING GLASS WORKS·Filed 1982·Granted Mar 20, 1984·159 cites·8 claims
- 0495US11741935B2Communication apparatus with ambient noise reductionCIRRUS LOGIC INT SEMICONDUCTOR LTD·Filed 2022·Granted Aug 29, 2023·3 cites·10 claims
- 0594US10460718B2Ambient noise reduction arrangementsCIRRUS LOGIC INT SEMICONDUCTOR LTD·Filed 2017·Granted Oct 29, 2019·7 cites·7 claims
- 0694US4502938AEncapsulated chemoresponsive microelectronic device arraysCORNING GLASS WORKS·Filed 1982·Granted Mar 5, 1985·99 cites·1 claims
- 0793US7177433B2Method of improving the audibility of sound from a loudspeaker located close to an earCREATIVE TECH LTD·Filed 2001·Granted Feb 13, 2007·60 cites·11 claims
- 0891US6498857B1Method of synthesizing an audio signalCENTRAL RESEARCH LAB LTD·Filed 1999·Granted Dec 24, 2002·132 cites·15 claims
- 0986US5619586AMethod and apparatus for producing a directly viewable image of a fingerprintEMI PLC THORN·Filed 1995·Granted Apr 8, 1997·170 cites·10 claims
- 1085US10419841B2Acoustic coupling arrangements for noise-cancelling headphones and earphonesINCUS LABORATORIES LTD·Filed 2017·Granted Sep 17, 2019·6 cites·10 claims
- 1185US10009694B2MEMS microphone assemblyINCUS LABORATORIES LTD·Filed 2017·Granted Jun 26, 2018·6 cites·15 claims
- 1285US8045724B2Ambient noise-reduction systemWOLFSON MICROELECTRONICS PLC·Filed 2008·Granted Oct 25, 2011·14 cites·21 claims
- 1383US6738479B1Method of audio signal processing for a loudspeaker located close to an earCREATIVE TECH LTD·Filed 2000·Granted May 18, 2004·35 cites·13 claims
- 1483US4931851AGas sensitive deviceEMI PLC THORN·Filed 1987·Granted Jun 5, 1990·74 cites·11 claims
- 1582US11127390B2Ambient noise reduction arrangementsCIRRUS LOGIC INT SEMICONDUCTOR LTD·Filed 2019·Granted Sep 21, 2021·2 cites·3 claims
- 1682US8953814B2Communication apparatus with ambient noise reductionSIBBALD ALASTAIR·Filed 2008·Granted Feb 10, 2015·5 cites·15 claims
- 1780US7167567B1Method of processing an audio signalCREATIVE TECH LTD·Filed 1998·Granted Jan 23, 2007·78 cites·34 claims
- 1879US8989424B2Earphone arrangementsSIBBALD ALASTAIR·Filed 2012·Granted Mar 24, 2015·10 cites·13 claims
- 1979US6795556B1Method of modifying one or more original head related transfer functionsCREATIVE TECH LTD·Filed 2000·Granted Sep 21, 2004·85 cites·12 claims
- 2079US6741711B1Method of synthesizing an approximate impulse response functionCREATIVE TECH LTD·Filed 2000·Granted May 25, 2004·22 cites·14 claims
- 2178US4657658ASemiconductor devicesSIBBALD ALASTAIR·Filed 1985·Granted Apr 14, 1987·39 cites·8 claims
- 2274US5412463AFinger guide with orthogonal guide surfacesCENTRAL RESEARCH LAB LTD·Filed 1993·Granted May 2, 1995·82 cites·5 claims
- 2374US4567006AMethod for encapsulating microelectronic sensor devicesCORNING GLASS WORKS·Filed 1984·Granted Jan 28, 1986·30 cites·4 claims
- 2473US8737633B2Noise cancellation system with gain control based on noise levelSIBBALD ALASTAIR·Filed 2008·Granted May 27, 2014·7 cites·22 claims
- 2573US5666425APlural-channel sound processingCENTRAL RESEARCH LAB LTD·Filed 1994·Granted Sep 9, 1997·43 cites·15 claims
- 2670US9786264B2Ambient noise reduction arrangementsWOLFSON MICROELECTRONICS PLC·Filed 2013·Granted Oct 10, 2017·2 cites·10 claims
- 2769US11620975B2Ambient noise reduction arrangementsCIRRUS LOGIC INT SEMICONDUCTOR LTD·Filed 2021·Granted Apr 4, 2023·0 cites·18 claims
- 2867US11367426B2Communication apparatus with ambient noise reductionCIRRUS LOGIC INT SEMICONDUCTOR LTD·Filed 2020·Granted Jun 21, 2022·0 cites·9 claims
- 2967US5633947AMethod and apparatus for fingerprint characterization and recognition using auto correlation patternEMI PLC THORN·Filed 1994·Granted May 27, 1997·50 cites·18 claims
- 3066US10950215B2Communication apparatus with ambient noise reductionCIRRUS LOGIC INT SEMICONDUCTOR LTD·Filed 2020·Granted Mar 16, 2021·0 cites·19 claims
- 3164US10685636B2Communication apparatus with ambient noise reductionCIRRUS LOGIC INT SEMICONDUCTOR LTD·Filed 2019·Granted Jun 16, 2020·0 cites·9 claims
- 3263US6614910B1Stereo sound expanderCENTRAL RESEARCH LAB LTD·Filed 1997·Granted Sep 2, 2003·41 cites·10 claims
- 3363US5219712AMethod of forming a solid articleEMI PLC THORN·Filed 1991·Granted Jun 15, 1993·35 cites·18 claims
- 3462US4514276AMicroelectronic sensor assemblyCORNING GLASS WORKS·Filed 1982·Granted Apr 30, 1985·25 cites·5 claims
- 3559US6401769B1Apparatus for dispensing a predetermined volume of a liquidCENTRAL RESEARCH LAB LTD·Filed 1999·Granted Jun 11, 2002·21 cites·18 claims
- 3657US5751815AApparatus for audio signal stereophonic adjustmentCENTRAL RESEARCH LAB LTD·Filed 1994·Granted May 12, 1998·20 cites·12 claims
- 3755US6402782B1Artificial ear and auditory canal system and means of manufacturing the sameCENTRAL RESEARCH LAB LTD·Filed 1998·Granted Jun 11, 2002·32 cites·23 claims
- 3855US5600727ADetermination of positionCENTRAL RESEARCH LAB LTD·Filed 1994·Granted Feb 4, 1997·27 cites·7 claims
- 3953US6643375B1Method of processing a plural channel audio signalCENTRAL RESEARCH LAB LTD·Filed 1998·Granted Nov 4, 2003·31 cites·8 claims
- 4053US5917916AAudio reproduction systemsCENTRAL RESEARCH LAB LTD·Filed 1997·Granted Jun 29, 1999·30 cites·5 claims
- 4152US2015139434A1Communication apparatus with ambient noise reductionCIRRUS LOGIC INTERNAT UK LTD·Filed 2015·Application pending·0 cites
- 4250US7197151B1Method of improving 3D sound reproductionCREATIVE TECH LTD·Filed 1999·Granted Mar 27, 2007·26 cites·14 claims
- 4349US5306912AOptically addressed thermal imaging deviceEMI PLC THORN·Filed 1990·Granted Apr 26, 1994·15 cites·16 claims
- 4449US2009034748A1Ambient noise-reduction control systemSIBBALD ALASTAIR·Filed 2007·Application pending·0 cites
- 4547US2010061564A1Ambient noise reduction systemCLEMOW RICHARD·Filed 2008·Application pending·0 cites
- 4647US2009323995A1Miniature Planar Acoustic NetworksSIBBALD ALASTAIR·Filed 2006·Application pending·0 cites
- 4747US2010080400A1Ear-worn speaker-carrying devicesSIBBALD ALASTAIR·Filed 2008·Application pending·0 cites
- 4845US2013308786A1Ear-worn speaker-carrying devicesWOLFSON MICROELECTRONICS PLC·Filed 2013·Application pending·0 cites
- 4945US2011164757A1Pinna simulatorSIBBALD ALASTAIR·Filed 2009·Application pending·0 cites
- 5043US2010105447A1Ambient noise reductionWOLFSON MICROELECTRONICS PLC·Filed 2008·Application pending·0 cites
Showing the top 50 of 58 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →