Inventor · disambiguated record
John Lull
Also filed as: LULL JOHN · LULL JOHN M · LULL JOHN MICHAEL
40 granted patents·3 pending applications·1,343 citations·filing 1981–2021
98Inventor score
Files withCELERITY INC14ILLINOIS TOOL WORKS12BROOKS INSTR LLC5CELERITY GROUP INC4MEGA FLUID SYSTEMS INC2
Top patents by PatentIndex Score
43 records- 0199US4484217AMethod and system for remote reporting, particularly for pay television billingTELEASE INC·Filed 1982·Granted Nov 20, 1984·389 cites·47 claims
- 0296US9562796B2Absolute and differential pressure transducerILLINOIS TOOL WORKS·Filed 2014·Granted Feb 7, 2017·18 cites·20 claims
- 0396US7905139B2Mass flow controller with improved dynamicBROOKS INSTR LLC·Filed 2008·Granted Mar 15, 2011·33 cites·38 claims
- 0496US7380564B2System and method for a mass flow controllerCELERITY INC·Filed 2007·Granted Jun 3, 2008·34 cites·36 claims
- 0596US7273063B2Methods and apparatus for pressure compensation in a mass flow controllerCELERITY INC·Filed 2005·Granted Sep 25, 2007·36 cites·36 claims
- 0696US6962164B2System and method for a mass flow controllerCELERITY GROUP INC·Filed 2002·Granted Nov 8, 2005·79 cites·28 claims
- 0796US6752166B2Method and apparatus for providing a determined ratio of process fluidsCELERITY GROUP INC·Filed 2002·Granted Jun 22, 2004·137 cites·21 claims
- 0895US11526181B2Mass flow controller with absolute and differential pressure transducerILLINOIS TOOL WORKS·Filed 2021·Granted Dec 13, 2022·3 cites·9 claims
- 0995US7636640B2Multi-gas flow deviceBROOKS INSTR LLC·Filed 2007·Granted Dec 22, 2009·32 cites·10 claims
- 1095US7434477B2Methods and apparatus for pressure compensation in a mass flow controllerCELERITY INC·Filed 2007·Granted Oct 14, 2008·29 cites·31 claims
- 1195US7272512B2Flow sensor signal conversionCELERITY INC·Filed 2005·Granted Sep 18, 2007·30 cites·35 claims
- 1294US7231931B2System and method for a mass flow controllerCELERITY INC·Filed 2005·Granted Jun 19, 2007·25 cites·43 claims
- 1394US7073392B2Methods and apparatus for pressure compensation in a mass flow controllerCELERITY INC·Filed 2003·Granted Jul 11, 2006·93 cites·31 claims
- 1492US7360551B2Method and apparatus for providing a determined ratio of process fluidsCELERITY INC·Filed 2007·Granted Apr 22, 2008·27 cites·20 claims
- 1591US6923568B2Method and apparatus for blending process materialsCELERITY INC·Filed 2001·Granted Aug 2, 2005·98 cites·9 claims
- 1688US11073846B2Mass flow controller with absolute and differential pressure transducerILLINOIS TOOL WORKS·Filed 2018·Granted Jul 27, 2021·7 cites·9 claims
- 1788US7143774B2Method and apparatus for providing a determined ratio of process fluidsCELERITY INC·Filed 2005·Granted Dec 5, 2006·18 cites·20 claims
- 1887US8751180B2Methods and apparatus for pressure compensation in a mass flow controllerLULL JOHN MICHAEL·Filed 2008·Granted Jun 10, 2014·16 cites·15 claims
- 1987US7424894B2Method and apparatus for providing a determined ratio of process fluidsCELERITY INC·Filed 2006·Granted Sep 16, 2008·17 cites·6 claims
- 2086US7748268B2Thermal flow meterBROOKS INSTR LLC·Filed 2008·Granted Jul 6, 2010·25 cites·38 claims
- 2186US7114511B2System and method for a mass flow controllerCELERITY GROUP INC·Filed 2005·Granted Oct 3, 2006·12 cites·13 claims
- 2285US6845659B2Variable resistance sensor with common reference legCELERITY GROUP INC·Filed 2003·Granted Jan 25, 2005·29 cites·33 claims
- 2384US7905653B2Method and apparatus for blending process materialsMEGA FLUID SYSTEMS INC·Filed 2001·Granted Mar 15, 2011·38 cites·28 claims
- 2483US4394769ADual modulus counter having non-inverting feedbackHUGHES AIRCRAFT CO·Filed 1981·Granted Jul 19, 1983·26 cites·11 claims
- 2580US7043374B2Flow sensor signal conversionCELERITY INC·Filed 2003·Granted May 9, 2006·19 cites·46 claims
- 2680US6941965B2Method and apparatus for providing a determined ratio of process fluidsCELERITY INC·Filed 2004·Granted Sep 13, 2005·23 cites·17 claims
- 2778US8010303B2Multi-gas flow deviceBROOKS INTRUMENT LLC·Filed 2009·Granted Aug 30, 2011·9 cites·19 claims
- 2877US8068999B2Multi-gas flow deviceWANG CHIUN·Filed 2009·Granted Nov 29, 2011·8 cites·19 claims
- 2975US10048105B2System and method for providing a self validating mass flow controller and mass flow meterILLINOIS TOOL WORKS·Filed 2013·Granted Aug 14, 2018·5 cites·20 claims
- 3073US7720617B2Flow sensor signal conversionBROOKS INSTR LLC·Filed 2007·Granted May 18, 2010·6 cites·31 claims
- 3164US10437264B2System and method for improving the accuracy of a rate of decay measurement for real time correction in a mass flow controller or mass flow meter by using a thermal model to minimize thermally induced error in the rod measurementILLINOIS TOOL WORKS·Filed 2013·Granted Oct 8, 2019·2 cites·20 claims
- 3264US9739655B2System and method for using a rate of decay measurement for real time measurement and correction of zero offset and zero drift of a mass flow controller or mass flow meterILLINOIS TOOL WORKS·Filed 2013·Granted Aug 22, 2017·2 cites·20 claims
- 3363US9507351B2System and method for reducing flow perturbations and improving the accuracy of a rate of decay measurement in a mass flow controllerILLINOIS TOOL WORKS·Filed 2013·Granted Nov 29, 2016·2 cites·17 claims
- 3456US6539792B2Method and apparatus for balancing resistanceUNIT INSTR·Filed 2001·Granted Apr 1, 2003·10 cites·38 claims
- 3554US2008062813A1Method and apparatus for blending process materialsCELERITY INC·Filed 2007·Application pending·0 cites
- 3653US7082824B2Variable resistance sensor with common reference legCELERITY INC·Filed 2004·Granted Aug 1, 2006·5 cites·21 claims
- 3751US2011153084A1Method and Apparatus for Blending Process MaterialsMEGA FLUID SYSTEMS INC·Filed 2011·Application pending·0 cites
- 3849US10969797B2Mass flow valve controller and control method with set point filter and linearization system based on valve modelILLINOIS TOOL WORKS·Filed 2018·Granted Apr 6, 2021·0 cites·19 claims
- 3949US10705543B2Mass flow controller and controller algorithmILLINOIS TOOL WORKS·Filed 2018·Granted Jul 7, 2020·0 cites·20 claims
- 4049US9760096B2System and method for using a model for improving control of a mass flow controllerILLINOIS TOOL WORKS·Filed 2013·Granted Sep 12, 2017·1 cites·14 claims
- 4148US2011191038A1Mass flow controller with improved dynamic responseBROOKS INSTR LLC·Filed 2011·Application pending·0 cites
- 4246US9410834B2System and method for providing a self validating mass flow controller or a mass flow meter utilizing a software protocolILLINOIS TOOL WORKS·Filed 2013·Granted Aug 9, 2016·0 cites·20 claims
- 4341US9810377B2System and method for improving the accuracy of a rate of decay (ROD) measurement in a mass flow controllerILLINOIS TOOL WORKS·Filed 2013·Granted Nov 7, 2017·0 cites·17 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →