Inventor · disambiguated record
David William Birch
Also filed as: BIRCH DAVID · BIRCH DAVID W · BIRCH DAVID WILLIAM
9 granted patents·2 pending applications·105 citations·filing 1996–2015
88Inventor score
Top patents by PatentIndex Score
11 records- 0179US10466082B2Flow meterUNIV SURREY·Filed 2015·Granted Nov 5, 2019·3 cites·16 claims
- 0257US7594639B2Cylinder valveBOC GROUP PLC·Filed 2003·Granted Sep 29, 2009·8 cites·13 claims
- 0357US5954232AGas delivery systemBOC GROUP PLC·Filed 1996·Granted Sep 21, 1999·21 cites·2 claims
- 0455US6382227B1Production of constant composition gas mixture streamsBOC GROUP INC·Filed 1997·Granted May 7, 2002·20 cites·13 claims
- 0553US5732735APressure reduction valveBOC GROUP PLC·Filed 1996·Granted Mar 31, 1998·23 cites·11 claims
- 0644US5845811AGas capsuleBOC GROUP PLC·Filed 1996·Granted Dec 8, 1998·12 cites·5 claims
- 0742US6361020B1Valve for use with high purity gasBOC GROUP PLC·Filed 2000·Granted Mar 26, 2002·3 cites·2 claims
- 0840US9126281B2Integrated flow meterBIRCH DAVID WILLIAM·Filed 2010·Granted Sep 8, 2015·0 cites·7 claims
- 0932US2009038691A1Valve guard assemblyBIRCH DAVID WILLIAM·Filed 2006·Application pending·0 cites
- 1030US6047865AGas capsule and gas delivery systemBOC GROUP PLC·Filed 1997·Granted Apr 11, 2000·15 cites·4 claims
- 1129US2012118402A1Gas cylinder valveBIRCH DAVID WILLIAM·Filed 2010·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →