Inventor
Mark E. Froggatt
Inventor
Blacksburg, VA, US
Overview
Patents· 68 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G01Mprimary
G01MTesting static or dynamic balance of machines or structures19%
G01BMeasuring length, thickness or similar linear dimensions18%
G01LMeasuring force, stress, torque, work, mechanical power, mechanical efficiency, or fluid pressure14%
G02BOptical elements, systems or apparatus14%
G01DMeasuring not specially adapted for a specific variable13%
G01KMeasuring temperature6%
A61BDiagnosis5%
G01JMeasurement of intensity, velocity, spectral content, polarisation, phase or pulse characteristics of infrared, visible or ultraviolet light4%
G01NInvestigating or analysing materials by determining their chemical or physical properties2%
H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light2%
PatentTitleYear
11,076,753Fiber management in medical instrument backend202111,035,699Methods and apparatus for determining shape parameter(s) using a sensing fiber having a single core with multiple light propagating modes202111,016,316Polarization control with low polarization-mode dispersion202110,983,268Redundant core in multicore optical fiber for safety202110,976,155Micro optic assemblies and optical interrogation systems202110,962,351Calculation of redundant bend in multi-core fiber for safety202110,921,117Methods and apparatus to determine a twist parameter and/or a bend angle associated with a multi-core fiber202110,908,047Registering measured optical fiber interferometric data with reference optical fiber interferometric data202110,876,831Force sensing in a distal region of an instrument including single-core or multi-core optical fiber202010,823,627Shape sensing with multi-core fiber sensor202010,782,121Methods and apparatus for OFDR interrogator monitoring and optimization202010,775,157Methods and apparatus for calibration for a fiber optic shape sensor202010,739,129Methods and apparatus to determine a twist parameter and/or a bend angle associated with a multi-core fiber202010,739,529Interferometric alignment of optical multicore fibers to be connected202010,732,075Registering measured optical fiber interferometric data with reference optical fiber interferometric data202010,551,173Methods and apparatus to determine a twist parameter and/or a bend angle associated with a multi-core fiber202010,545,283Redundant core in multicore optical fiber for safety202010,545,070Dispersion correction in optical frequency-domain reflectometry202010,502,632High precision wavelength measurement and control of a tunable laser201910,492,871Fiber management in medical instrument backend201910,480,926Apparatus and method for generating 3-D data for an anatomical target using optical fiber shape sensing201910,416,391Interferometric alignment of optical multicore fibers to be connected201910,378,883Force sensing in a distal region of an instrument including single-core or multi-core optical fiber201910,378,885Methods and apparatus to determine a twist parameter and/or a bend angle associated with a multi-core fiber201910,245,115Fiber optic sensing of tool strain or tool angle201910,132,614Dissimilar cores in multicore optical fiber for strain and temperature separation201810,054,420Method and apparatus for motion compensation in interferometric sensing systems using a non-linear compensating signal20189,885,633'Dispersion correction in optical frequency-domain reflectometry'20189,841,269'Method and apparatus for compensating for a time-varying disturbance in interferometric sensing systems'20179,784,569'Methods and apparatus to determine strain on an optical core based on tracked change in phase'20179,778,137'Methods and apparatus for measurement of modal characteristics of multimode fiber using Rayleigh scatter'20179,772,176'Overlapped chirped fiber bragg grating sensing fiber and methods and apparatus for parameter measurement using same'20179,766,131'High accuracy, high precision, low drift, and concurrent wavelength measurement of a sweeping tunable laser'20179,606,021'Methods and apparatus segmented calibration of a sensing optical fiber'20179,435,702'Method and apparatus for optical strain sensing'20169,329,401'Variable polarization separation via beam splitter rotation'20169,244,011'Method and apparatus for OFDR-based electrophoresis'20169,200,971'Method and apparatus for optical strain sensing'20159,178,611'Fiber optic network interrogation tool for combined swept-heterodyne optical spectrum analysis and optical frequency-domain reflectometry'20159,025,158'Interferometric measurement with crosstalk suppression'20158,842,963'Reducing reflection at termination of optical fiber in a small volume'20148,773,650'Optical position and/or shape sensing'20148,714,026'Strain sensing with optical fiber rosettes'20148,537,367'Optical imaging for optical device inspection'20138,531,655'Compensating for non-ideal multi-core optical fiber structure'20138,400,620'Registration of an extended reference for parameter measurement in an optical sensing system'20138,004,686'Compensating for time varying phase changes in interferometric measurements'20117,948,633'Compensating for time varying phase changes in interferometric measurements'20117,781,724'Fiber optic position and shape sensing device and method relating thereto'20107,772,541'Fiber optic position and/or shape sensing based on rayleigh scatter'20107,633,607'Method and apparatus for calibrating measurement equipment'20097,538,883'Distributed strain and temperature discrimination in polarization maintaining fiber'20097,515,276'High resolution interferometric optical frequency domain reflectometry (OFDR) beyond the laser coherence length'20097,440,087'Identifying optical fiber segments and determining characteristics of an optical device under test based on fiber segment scatter pattern data'20087,388,673'Heterodyne optical spectrum analyzer'20087,379,168'Polarization diversity detection without a polarizing beam splitter'20087,330,245'Calculation of birefringence in a waveguide based on Rayleigh scatter'20087,042,573'Apparatus and method for the complete characterization of optical devices including loss, birefringence and dispersion effects'20066,900,897'Apparatus and method for correcting errors generated by a laser with non-ideal tuning characteristics'20056,856,400'Apparatus and method for the complete characterization of optical devices including loss, birefringence and dispersion effects'20056,566,648'Edge triggered apparatus and method for measuring strain in bragg gratings'20036,545,760'Apparatus and method for measuring strain in optical fibers using rayleigh scatter'20036,426,496'High precision wavelength monitor for tunable laser systems'20026,376,830'System and method for measuring the transfer function of a guided wave device'20025,841,032'Variable and fixed frequency pulsed phase locked loop'19985,798,521'Apparatus and method for measuring strain in bragg gratings'19985,771,204'Apparatus and method for measuring relative phase of signals in a multiple-echo system'19985,404,743'Pulsed phase locked loop strain monitor'1995Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1995Based in Prince George, VA, US· patent location history
1998–2003Based in Yorktown, VA, US· patent location history
2002–2021Based in Blacksburg, VA, US· patent location history
2006–2016Patents assigned to LUNA INNOVATIONS INC (15)· patent assignee history
2013–2017Patents assigned to FROGGATT MARK E (9)· patent assignee history
2013–2014Patents assigned to GIFFORD DAWN K (4)· patent assignee history
2013–2015Patents assigned to KLEIN JUSTIN W (4)· patent assignee history
2014–2021Patents assigned to INTUITIVE SURGICAL OPERATIONS (42)· patent assignee history
2016Based in Roanoke, VA, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| INTUITIVE SURGICAL OPERATIONS | 42 | 2014–2021 |
| LUNA INNOVATIONS INC | 15 | 2006–2016 |
| FROGGATT MARK Eself | 9 | 2013–2017 |
| GIFFORD DAWN K | 4 | 2013–2014 |
| KLEIN JUSTIN W | 4 | 2013–2015 |
Locations
| Location | Patents | Span |
|---|---|---|
| Blacksburg, Virginia, US | 60 | 2002–2021 |
| Yorktown, Virginia, US | 6 | 1998–2003 |
| Roanoke, Virginia, US | 1 | 2016 |
| Prince George, Virginia, US | 1 | 1995 |