Inventor · disambiguated record
Graham R. Purkins
Also filed as: PURKINS GRAHAM · PURKINS GRAHAM R
11 granted patents·10 pending applications·258 citations·filing 2003–2025
91Inventor score
Top patents by PatentIndex Score
21 records- 0194US7234460B2Metering valve for a metered dose inhaler providing consistent delivery3M INNOVATIVE PROPERTIES CO·Filed 2003·Granted Jun 26, 2007·99 cites·35 claims
- 0287US9067031B2Metered dose valves and dispensersJINKS PHILIP A·Filed 2007·Granted Jun 30, 2015·17 cites·17 claims
- 0383US9089661B2Dose counter3M INNOVATIVE PROPERTIES CO·Filed 2013·Granted Jul 28, 2015·15 cites·17 claims
- 0482US8479732B2Dose counterSTUART ADAM J·Filed 2007·Granted Jul 9, 2013·30 cites·21 claims
- 0575US8517019B2Method and apparatus for metered dose dispensingBREWER RICHARD D·Filed 2007·Granted Aug 27, 2013·21 cites·21 claims
- 0672US8740014B2Dose counter for dispensersPURKINS GRAHAM R·Filed 2004·Granted Jun 3, 2014·27 cites·12 claims
- 0770USD687947SInhalerBREWER RICHARD D·Filed 2011·Granted Aug 13, 2013·18 cites·1 claims
- 0868USD687946SInhalerBREWER RICHARD D·Filed 2011·Granted Aug 13, 2013·16 cites·1 claims
- 0966USD687945SInhalerBREWER RICHARD D·Filed 2011·Granted Aug 13, 2013·15 cites·1 claims
- 1065US2025383267A1Method and apparatus for testing the functionality of a liquid delivery deviceMERXIN LTD·Filed 2025·Application pending·0 cites
- 1154US2025114541A1Dry powder inhalation deviceMERXIN LTD·Filed 2023·Application pending·0 cites
- 1254US2025319264A1InhalerMERXIN LTD·Filed 2025·Application pending·0 cites
- 1353US2025325796A1Liquid delivery device with a one-way valveMERXIN LTD·Filed 2025·Application pending·0 cites
- 1452US2008067199A1Valve Stems for Metered Dose Dispensing ValvesHODSON PETER D·Filed 2005·Application pending·0 cites
- 1546US2008121666A1Multi-Component Valve StemsPURKINS GRAHAM R·Filed 2004·Application pending·0 cites
- 1644US2008202515A1Inhalation Device3M INNOVATIVE PROPERTIES CO·Filed 2005·Application pending·0 cites
- 1744US2006131346A1Two component molded valve stemsPURKINS GRAHAM R·Filed 2004·Application pending·0 cites
- 1843US2008092887A1Single-Dose Inhalation DevicesHODSON PETER D·Filed 2005·Application pending·0 cites
- 1940USD1077207SCartridge for inhalerMERXIN LTD·Filed 2022·Granted May 27, 2025·0 cites·1 claims
- 2039US2013037021A1Inhaler3M INNOVATIVE PROPERTIES CO·Filed 2011·Application pending·0 cites
- 2137US11730898B2InhalerMERXIN LTD·Filed 2018·Granted Aug 22, 2023·0 cites·13 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →