Inventor · disambiguated record
Andrew Ashraf Fergusson
Also filed as: FERGUSSON ANDREW · FERGUSSON ANDREW A · FERGUSSON ANDREW ASHRAF
11 granted patents·122 citations·filing 2000–2016
89Inventor score
Top patents by PatentIndex Score
11 records- 0195US8978487B2Capacitive force sensor with magnetic springRESEARCH IN MOTION LTD·Filed 2012·Granted Mar 17, 2015·48 cites·24 claims
- 0287US6578154B1Clock duty cycle correction circuit which corrects an input clock by directly comparing the input clock with a reference clock generated by the output clockRESEARCH IN MOTION LTD·Filed 2000·Granted Jun 10, 2003·32 cites·17 claims
- 0385US8571221B2On-chip storage, creation, and manipulation of an encryption keyLITTLE HERBERT A·Filed 2005·Granted Oct 29, 2013·14 cites·16 claims
- 0483US9128541B2Apparatus to sense stylus nib pressuresRESEARCH IN MOTION LTD·Filed 2013·Granted Sep 8, 2015·7 cites·15 claims
- 0577US9804712B2Contact-free interaction with an electronic deviceBLACKBERRY LTD·Filed 2013·Granted Oct 31, 2017·5 cites·22 claims
- 0670US9280219B2System and method of authentication of an electronic signatureBLACKBERRY LTD·Filed 2013·Granted Mar 8, 2016·2 cites·20 claims
- 0766US8947372B2Electronic device including touch-sensitive displayFERGUSSON ANDREW ASHRAF·Filed 2010·Granted Feb 3, 2015·5 cites·7 claims
- 0864US9552498B2On-chip storage, creation, and manipulation of an encryption keyBLACKBERRY LTD·Filed 2013·Granted Jan 24, 2017·1 cites·20 claims
- 0962US9280214B2Method and apparatus for motion sensing of a handheld device relative to a stylusRESEARCH IN MOTION LTD·Filed 2013·Granted Mar 8, 2016·1 cites·19 claims
- 1058US6915442B2Precision-controlled duty cycle clock circuitRESEARCH IN MOTION LTD·Filed 2003·Granted Jul 5, 2005·7 cites·1 claims
- 1153US9600729B2System and method of authentication of an electronic signatureBLACKBERRY LTD·Filed 2016·Granted Mar 21, 2017·0 cites·25 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →