Inventor · disambiguated record
Charles F. Drexel
Also filed as: DREXEL CHARLES F
12 granted patents·518 citations·filing 1980–1999
94Inventor score
Top patents by PatentIndex Score
12 records- 0195US4524616AAdjustable laminar flow bypassTYLAN CORP·Filed 1983·Granted Jun 25, 1985·83 cites·11 claims
- 0293US5044199AFlowmeterDXL INTERNATIONAL INC·Filed 1989·Granted Sep 3, 1991·74 cites·63 claims
- 0387US4348580AEnergy efficient furnace with movable end wallTYLAN CORP·Filed 1980·Granted Sep 7, 1982·23 cites·14 claims
- 0486US5285673AMethod for in-line calibration verification of mass flow metersDXL INTERNATIONAL INC·Filed 1991·Granted Feb 15, 1994·55 cites·28 claims
- 0584US5311762AFlow sensor calibrationDXL USA·Filed 1991·Granted May 17, 1994·52 cites·17 claims
- 0678US5305638AMass flowmeter having non-adjustable flow splitterDXL INTERNATIONAL INC·Filed 1992·Granted Apr 26, 1994·41 cites·22 claims
- 0775US6269692B1Mass flow measuring assembly having low pressure drop and fast response timeDXL USA INC·Filed 1999·Granted Aug 7, 2001·42 cites·19 claims
- 0874US5191793AFluid mass flow meter device with reduced attitude sensitivityTYLAN CORP·Filed 1992·Granted Mar 9, 1993·36 cites·15 claims
- 0973US5259243AFlow sensorDXL INTERNATIONAL INC·Filed 1991·Granted Nov 9, 1993·36 cites·21 claims
- 1072US5165655AFlow control valve assembly minimizing generation and entrapment of contaminantsDXL USA·Filed 1991·Granted Nov 24, 1992·36 cites·20 claims
- 1165US5253520AFlow sensor connectorDXL INTERNATIONAL INC·Filed 1990·Granted Oct 19, 1993·23 cites·4 claims
- 1254US6138990AFlow control valve assembly for mass flow controllerDXL USA INC·Filed 1999·Granted Oct 31, 2000·17 cites·18 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →