Inventor · disambiguated record
Mark R. Fernald
Also filed as: FERNALD MARK · FERNALD MARK R
92 granted patents·11 pending applications·2,182 citations·filing 1985–2024
99Inventor score
Files withCIDRA CORP18CIDRA CORPORATE SERVICES LLC18CIDRA CORPORATE SERVICES INC17WEATHERFORD LAMB13ROTHMAN PAUL J9
Top patents by PatentIndex Score
103 records- 0198US6422084B1Bragg grating pressure sensorWEATHERFORD LAMB·Filed 1999·Granted Jul 23, 2002·177 cites·73 claims
- 0297US9302270B2Mineral separation using functionalized filters and membranesROTHMAN PAUL J·Filed 2012·Granted Apr 5, 2016·23 cites·19 claims
- 0397US7624651B2Apparatus and method for attenuating acoustic waves in pipe walls for clamp-on ultrasonic flow meterEXPRO METERS INC·Filed 2007·Granted Dec 1, 2009·63 cites·17 claims
- 0497US7330797B2Apparatus and method for measuring settlement of solids in a multiphase flowCIDRA CORP·Filed 2006·Granted Feb 12, 2008·48 cites·37 claims
- 0597US6820489B2Optical differential pressure sensorWEATHERFORD LAMB·Filed 2003·Granted Nov 23, 2004·68 cites·20 claims
- 0697US6785004B2Method and apparatus for interrogating fiber optic sensorsWEATHERFORD LAMB·Filed 2000·Granted Aug 31, 2004·110 cites·71 claims
- 0795US9352335B2Synthetic beads/bubbles functionalized with molecules for attracting and attaching to mineral particles of interestROTHMAN PAUL J·Filed 2012·Granted May 31, 2016·10 cites·40 claims
- 0895US7624650B2Apparatus and method for attenuating acoustic waves propagating within a pipe wallEXPRO METERS INC·Filed 2007·Granted Dec 1, 2009·34 cites·19 claims
- 0995US6668656B2Optical sensor having differing diametersWEATHERFORD LAMB·Filed 2002·Granted Dec 30, 2003·48 cites·37 claims
- 1095US6490931B1Fused tension-based fiber grating pressure sensorWEATHERFORD LAMB·Filed 1999·Granted Dec 10, 2002·108 cites·86 claims
- 1194US9810665B2Sonic filter for measuring and capturing particles having a particular particle size in a fluid, mixture or process flowFERNALD MARK R·Filed 2012·Granted Nov 7, 2017·17 cites·19 claims
- 1294US6826343B2Multi-core waveguideCIDRA CORP·Filed 2002·Granted Nov 30, 2004·66 cites·48 claims
- 1394US6363089B1Compression-tuned Bragg grating and laserCIDRA CORP·Filed 2000·Granted Mar 26, 2002·54 cites·26 claims
- 1494US6278811B1Fiber optic bragg grating pressure sensorFiled 1999·Granted Aug 21, 2001·107 cites·22 claims
- 1593US11035826B1Method and apparatus for determining GVF—gas volume fraction—for aerated fluids and liquids in flotation tanks, columns, drums, tubes, vatsCIDRA CORPORATE SERVICES INC·Filed 2021·Granted Jun 15, 2021·2 cites·18 claims
- 1693US9833763B2Optimizing acoustic efficiency of a sonic filter or separatorFERNALD MARK R·Filed 2012·Granted Dec 5, 2017·17 cites·2 claims
- 1793US7503227B2Method and apparatus for measuring parameters of a fluid flow using an array of sensorsCIDRA CORPORATE SERVICES INC·Filed 2006·Granted Mar 17, 2009·32 cites·23 claims
- 1893US6621957B1Temperature compensated optical deviceCIDRA CORP·Filed 2000·Granted Sep 16, 2003·58 cites·71 claims
- 1993US6229827B1Compression-tuned bragg grating and laserCIDRA CORP·Filed 1999·Granted May 8, 2001·130 cites·48 claims
- 2093US5394488AOptical fiber grating based sensorUNITED TECHNOLOGIES CORP·Filed 1993·Granted Feb 28, 1995·128 cites·28 claims
- 2192US7882750B2Method and apparatus for measuring parameters of a fluid flowing within a pipe using a configurable array of sensorsCIDRA CORPORATE SERVICES INC·Filed 2007·Granted Feb 8, 2011·20 cites·27 claims
- 2292US6776045B2Bragg grating pressure sensor for industrial sensing applicationsCIDRA CORP·Filed 2001·Granted Aug 17, 2004·38 cites·33 claims
- 2392US4627731ACommon optical path interferometric gaugeUNITED TECHNOLOGIES CORP·Filed 1985·Granted Dec 9, 1986·84 cites·6 claims
- 2491US11440026B2Tumbler cell for mineral recovery using engineered mediaCIDRA CORPORATE SERVICES LLC·Filed 2020·Granted Sep 13, 2022·2 cites·27 claims
- 2591US8893558B2Method and apparatus for measuring parameters of a fluid flowing within a pipe using a configurable array of sensorsDAVIS MICHAEL A·Filed 2011·Granted Nov 25, 2014·9 cites·45 claims
- 2691US6626043B1Fluid diffusion resistant glass-encased fiber optic sensorWEATHERFORD LAMB·Filed 2000·Granted Sep 30, 2003·33 cites·41 claims
- 2790US7673524B2Method and apparatus for measuring a parameter of a fluid flowing within a pipe having a sensing device with multiple sensor segmentsCIDRA CORPORATE SERVICES INC·Filed 2006·Granted Mar 9, 2010·18 cites·23 claims
- 2889US9335298B2Wear monitoring with rotational sensor and sensor thicknessCIDRA CORPORATE SERVICES INC·Filed 2013·Granted May 10, 2016·6 cites·31 claims
- 2989US9327294B2Synthetic bubbles or beads having hydrophobic surfaceROTHMAN PAUL J·Filed 2012·Granted May 3, 2016·3 cites·42 claims
- 3089US6898338B2Fabry-Perot sensing element based on a large-diameter optical waveguideWEATHERFORD LAMB·Filed 2002·Granted May 24, 2005·36 cites·14 claims
- 3189US6597711B2Bragg grating-based laserCIDRA CORP·Filed 2002·Granted Jul 22, 2003·29 cites·75 claims
- 3289US6519388B1Tube-encased fiber gratingCIDRA CORP·Filed 1999·Granted Feb 11, 2003·85 cites·41 claims
- 3387US10099251B2Re-lined pipe technique for wear mitigation in slurry transport pipelineCIDRA COPORATE SERVICES INC·Filed 2017·Granted Oct 16, 2018·7 cites·7 claims
- 3487US8336393B2Method and apparatus for measuring parameters of a fluid flowing within a pipe using a configurable array of sensorsDAVIS MICHAEL A·Filed 2011·Granted Dec 25, 2012·6 cites·28 claims
- 3587US6452667B1Pressure-isolated bragg grating temperature sensorWEATHERFORD LAMB·Filed 1999·Granted Sep 17, 2002·65 cites·27 claims
- 3686US7474966B2Apparatus having an array of piezoelectric film sensors for measuring parameters of a process flow within a pipeEXPRO METERS INC·Filed 2006·Granted Jan 6, 2009·16 cites·3 claims
- 3786US7062126B2Tunable optical filter having large diameter optical waveguide with bragg grating and being configured for reducing the bulk modulus of compressibility thereofKERSEY ALAN D·Filed 2003·Granted Jun 13, 2006·23 cites·37 claims
- 3886US6768825B2Optical sensor device having creep-resistant optical fiber attachmentsWEATHERFORD LAMB·Filed 2001·Granted Jul 27, 2004·32 cites·89 claims
- 3985US9981271B2Method and system for releasing mineral from synthetic bubbles and beadsROTHMAN PAUL J·Filed 2012·Granted May 29, 2018·2 cites·18 claims
- 4085US7146864B2Apparatus having a multi-band sensor assembly for measuring a parameter of a fluid flow flowing within a pipeCIDRA CORP·Filed 2004·Granted Dec 12, 2006·32 cites·45 claims
- 4185US6601411B2Method for annealing an optical waveguide having a bragg grating to accelerate ageingCIDRA CORP·Filed 2001·Granted Aug 5, 2003·14 cites·18 claims
- 4284US9731221B2Apparatus having polymer surfaces having a siloxane functional groupCIDRA CORPORATE SERVICES INC·Filed 2014·Granted Aug 15, 2017·4 cites·29 claims
- 4383US9943860B2Mineral recovery in tailings using functionalized polymersROTHMAN PAUL J·Filed 2012·Granted Apr 17, 2018·3 cites·24 claims
- 4482US7673526B2Apparatus and method of lensing an ultrasonic beam for an ultrasonic flow meterEXPRO METERS INC·Filed 2007·Granted Mar 9, 2010·13 cites·13 claims
- 4582US6507693B2Optical filter device having creep-resistant optical fiber attachmentsCIDRA CORP·Filed 2001·Granted Jan 14, 2003·25 cites·40 claims
- 4681US7895903B2Method and apparatus for measuring a parameter of a fluid flowing within a pipeCIDRA CORPORATE SERVICES INC·Filed 2009·Granted Mar 1, 2011·10 cites·9 claims
- 4781US7400985B2Apparatus having an array of clamp on piezoelectric film sensors for measuring parameters of a process flow within a pipeCIDRA CORP·Filed 2003·Granted Jul 15, 2008·25 cites·49 claims
- 4881US6813013B2Pressure-isolated bragg grating temperature sensorWEATHERFORD LAMB·Filed 2002·Granted Nov 2, 2004·19 cites·32 claims
- 4981US6633695B2Compression-tuned grating-based optical add/drop multiplexerCIDRA CORP·Filed 2001·Granted Oct 14, 2003·16 cites·39 claims
- 5080US12337344B2Polymer-coated member having a reticulated foam substrate with an open-cell foam structure and at least one polymeric coated surfaceCIDRA CORPORATE SERVICES LLC·Filed 2024·Granted Jun 24, 2025·0 cites·9 claims
Showing the top 50 of 103 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Mark R. Fernald files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →