Inventor · disambiguated record
Roger James Williamson
Also filed as: WILLIAMSON ROGER · WILLIAMSON ROGER J · WILLIAMSON ROGER JAMES
20 granted patents·408 citations·filing 1979–2020
95Inventor score
Top patents by PatentIndex Score
20 records- 0189US11771192B2Method and apparatus for manipulating the shape of hairJEMELLA LTD·Filed 2020·Granted Oct 3, 2023·2 cites·13 claims
- 0280US10716381B2Method and apparatus for manipulating the shape of hairJEMELLA LTD·Filed 2015·Granted Jul 21, 2020·3 cites·25 claims
- 0378US11872295B2Method and apparatus for dyeing hair fibres using radio frequency electromagnetic radiationJEMELLA LTD·Filed 2018·Granted Jan 16, 2024·2 cites·20 claims
- 0476US6272209B1Lifeline telephony provision for voice over digital subscriber lineNORTEL NETWORKS LTD·Filed 1999·Granted Aug 7, 2001·107 cites·14 claims
- 0568US6477249B1Communications signal splitter and filterNORTEL NETWORKS LTD·Filed 1998·Granted Nov 5, 2002·47 cites·17 claims
- 0667US9138748B2Reaction vessel comprising conductive layer and inner non-metallic layerLEE MARTIN ALAN·Filed 2008·Granted Sep 22, 2015·2 cites·28 claims
- 0766US5991269AWireline modem, communication system and method of setting-up suchNORTHERN TELECOM LTD·Filed 1998·Granted Nov 23, 1999·61 cites·31 claims
- 0861US5304887ACrystal resonator deviceNORTHERN TELECOM LTD·Filed 1992·Granted Apr 19, 1994·16 cites·2 claims
- 0959US4339661AFibre optic transducerITT·Filed 1980·Granted Jul 13, 1982·20 cites·1 claims
- 1058US6373923B1Line testing method and apparatus thereforNORTEL NETWORKS LTD·Filed 1998·Granted Apr 16, 2002·29 cites·35 claims
- 1155US6400803B1Voice over digital subscriber line call redirection for lifeline serviceNORTEL NETWORKS LTD·Filed 1999·Granted Jun 4, 2002·39 cites·12 claims
- 1254US4485679AFluid flowmeterITT·Filed 1982·Granted Dec 4, 1984·14 cites·5 claims
- 1354US4372165AApparatus for measuring fluid flowITT·Filed 1980·Granted Feb 8, 1983·13 cites·4 claims
- 1451US4782281AMethod of measuring the parameters of a resonatorSTC PLC·Filed 1987·Granted Nov 1, 1988·12 cites·3 claims
- 1545US6577650B1Method of setting-up and controlling synchronization within a modemNORTEL NETWORKS LTD·Filed 1999·Granted Jun 10, 2003·19 cites·11 claims
- 1636US4416159AVortex flowmeterITT·Filed 1981·Granted Nov 22, 1983·5 cites·1 claims
- 1735US4519259AVortex shedding fluid flowmeterITT·Filed 1983·Granted May 28, 1985·5 cites·8 claims
- 1835US4241612AFlowmeterITT·Filed 1979·Granted Dec 30, 1980·3 cites·3 claims
- 1933US6522691B1Method of and apparatus for determining the capacity of a telecommunications systemNORTEL NETWORKS LTD·Filed 1999·Granted Feb 18, 2003·7 cites·16 claims
- 2031US6483914B1Telephone filter arrangementNORTEL NETWORKS LTD·Filed 1999·Granted Nov 19, 2002·2 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →