Inventor · disambiguated record
Douglas F. Devries
Also filed as: DEVRIES DOUGLAS F
36 granted patents·3 pending applications·3,660 citations·filing 1984–2022
99Inventor score
Files withBIRD PRODUCTS CORP13VENTEC LIFE SYSTEMS INC9DEVRIES DOUGLAS F7PULMONETIC SYSTEMS INC4BEAR MED SYST INC2
Top patents by PatentIndex Score
39 records- 0198US7849854B2Portable drag compressor powered mechanical ventilatorBIRD PRODUCTS CORP·Filed 2004·Granted Dec 14, 2010·117 cites·9 claims
- 0298US6877511B2Portable drag compressor powered mechanical ventilatorBIRD PRODUCTS CORP·Filed 2003·Granted Apr 12, 2005·235 cites·14 claims
- 0398US6526970B2Portable drag compressor powered mechanical ventilatorFiled 2001·Granted Mar 4, 2003·222 cites·60 claims
- 0498US5868133APortable drag compressor powered mechanical ventilatorBIRD PRODUCTS CORP·Filed 1997·Granted Feb 9, 1999·300 cites·54 claims
- 0598US5694926APortable drag compressor powered mechanical ventilatorBIRD PRODUCTS CORP·Filed 1995·Granted Dec 9, 1997·182 cites·11 claims
- 0697US11291791B2Ventilator with integrated cough-assistVENTEC LIFE SYSTEMS INC·Filed 2021·Granted Apr 5, 2022·4 cites·13 claims
- 0797US10105509B2Active exhalation valveVENTEC LIFE SYSTEMS INC·Filed 2015·Granted Oct 23, 2018·24 cites·15 claims
- 0897US10046134B2Pressure swing adsorption oxygen generatorVENTEC LIFE SYSTEMS INC·Filed 2015·Granted Aug 14, 2018·28 cites·19 claims
- 0997US9956371B2Ventilator with integrated cough-assistVENTEC LIFE SYSTEMS INC·Filed 2015·Granted May 1, 2018·23 cites·25 claims
- 1097US5881722APortable drag compressor powered mechanical ventilatorBIRD PRODUCTS CORP·Filed 1995·Granted Mar 16, 1999·142 cites·17 claims
- 1196US10315002B2Ventilator with integrated oxygen productionVENTEC LIFE SYSTEMS INC·Filed 2015·Granted Jun 11, 2019·25 cites·10 claims
- 1296US10245406B2Ventilator with integrated oxygen productionVENTEC LIFE SYSTEMS INC·Filed 2015·Granted Apr 2, 2019·28 cites·27 claims
- 1396US7222623B2Portable drag compressor powered mechanical ventilatorBIRDS PRODUCTS CORP·Filed 2004·Granted May 29, 2007·143 cites·2 claims
- 1496US7188621B2Portable ventilator systemPULMONETIC SYSTEMS INC·Filed 2004·Granted Mar 13, 2007·336 cites·11 claims
- 1595US8118024B2Mechanical ventilation system utilizing bias valveDEVRIES DOUGLAS F·Filed 2006·Granted Feb 21, 2012·89 cites·10 claims
- 1694US4993269AVariable orifice flow sensing apparatusBIRD PRODUCTS CORP·Filed 1988·Granted Feb 19, 1991·146 cites·31 claims
- 1792US10576237B2Active exhalation valveVENTEC LIFE SYSTEMS INC·Filed 2018·Granted Mar 3, 2020·6 cites·16 claims
- 1891US9126002B2Mechanical ventilation system utilizing bias valveDEVRIES DOUGLAS F·Filed 2010·Granted Sep 8, 2015·26 cites·33 claims
- 1988US8627819B2Portable ventilator systemDEVRIES DOUGLAS F·Filed 2006·Granted Jan 14, 2014·40 cites·20 claims
- 2088US7527053B2Method and apparatus for attenuating compressor noiseCARDINAL HEALTH 203 INC·Filed 2005·Granted May 5, 2009·60 cites·26 claims
- 2187US4527557AMedical ventilator systemBEAR MED SYST INC·Filed 1984·Granted Jul 9, 1985·214 cites·34 claims
- 2286US8522780B2Portable ventilator systemDEVRIES DOUGLAS F·Filed 2007·Granted Sep 3, 2013·33 cites·12 claims
- 2386US8297279B2Portable ventilator systemDEVRIES DOUGLAS F·Filed 2006·Granted Oct 30, 2012·31 cites·15 claims
- 2486US6102038AExhalation valve for mechanical ventilatorPULMONETIC SYSTEMS INC·Filed 1998·Granted Aug 15, 2000·243 cites·18 claims
- 2585US8683997B2Portable ventilator systemDEVRIES DOUGLAS F·Filed 2007·Granted Apr 1, 2014·28 cites·24 claims
- 2683US11247015B2Ventilator with integrated oxygen productionVENTEC LIFE SYSTEMS INC·Filed 2019·Granted Feb 15, 2022·4 cites·11 claims
- 2783US8156937B2Portable ventilator systemDEVRIES DOUGLAS F·Filed 2005·Granted Apr 17, 2012·35 cites·24 claims
- 2878US5494028AMedical ventilatorBIRD PRODUCTS CORP·Filed 1987·Granted Feb 27, 1996·165 cites·30 claims
- 2978US5127400AVentilator exhalation valveBIRD PRODUCTS CORP·Filed 1990·Granted Jul 7, 1992·222 cites·6 claims
- 3077US11992619B2Ventilator with integrated cough-assistVENTEC LIFE SYSTEMS INC·Filed 2022·Granted May 28, 2024·0 cites·16 claims
- 3176US4602653AElectronically-controlled gas blending systemBEAR MED SYST INC·Filed 1984·Granted Jul 29, 1986·135 cites·27 claims
- 3271US5072729AVentilator exhalation valveBIRD PRODUCTS CORP·Filed 1989·Granted Dec 17, 1991·117 cites·14 claims
- 3367US6152135AVentilator systemPULMONETIC SYSTEMS INC·Filed 1998·Granted Nov 28, 2000·116 cites·16 claims
- 3462US10118011B2Mechanical ventilation system utilizing bias valveCAREFUSION 203 INC·Filed 2015·Granted Nov 6, 2018·0 cites·18 claims
- 3562US4794922AVentilator manifoldBIRD PRODUCTS CORP·Filed 1986·Granted Jan 3, 1989·87 cites·22 claims
- 3654US2009084381A1Portable drag compressor powered mechanical ventilatorBIRD PRODUCTS CORP·Filed 2008·Application pending·0 cites
- 3751US2007144521A1Portable drag compressor powered mechanical ventilatorBIRD PRODUCTS CORP·Filed 2006·Application pending·0 cites
- 3849US5014694AAmbient pressure air/oxygen blenderBIRD PRODUCTS CORP·Filed 1990·Granted May 14, 1991·54 cites·40 claims
- 3943US2005112013A1Method and apparatus for reducing noise in a roots-type blowerPULMONETIC SYSTEMS INC·Filed 2004·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →