Inventor
BERTHOLD JOHN W
US43 patents
⚠️ This page may combine multiple inventors who share the name “BERTHOLD JOHN W”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
BABCOCK & WILCOX CO
19 patentsUS5845033ADec 1, 1998
Fiber optic sensing system for monitoring restrictions in hydrocarbon production systems
BABCOCK & WILCOX CO204 citations98
US5225883AJul 6, 1993
Video temperature monitor
BABCOCK & WILCOX CO117 citations94
US5035511AJul 30, 1991
Distributed fiber optic temperature sensor based on time domain transmission
BABCOCK & WILCOX CO34 citations93
US5196694AMar 23, 1993
Temperature compensated self-referenced fiber optic microbend pressure transducer
BABCOCK & WILCOX CO26 citations92
US5258614ANov 2, 1993
Optical fiber loop temperature sensor
BABCOCK & WILCOX CO53 citations91
US5220172AJun 15, 1993
Fluorescence analyzer for lignin
BABCOCK & WILCOX CO49 citations91
US5216483AJun 1, 1993
Fluorescence analyzer for lignin
BABCOCK & WILCOX CO38 citations91
US5086220AFeb 4, 1992
Radiation imaging fiber optic temperature distribution monitor
BABCOCK & WILCOX CO50 citations91
US4843234AJun 27, 1989
Consumable electrode length monitor based on optical time domain reflectometry
BABCOCK & WILCOX CO39 citations91
US5206711AApr 27, 1993
Fluid opacity sensor
BABCOCK & WILCOX CO21 citations90
US5386729AFeb 7, 1995
Temperature compensated microbend fiber optic differential pressure transducer
BABCOCK & WILCOX CO40 citations89
US4893895AJan 16, 1990
An improved encased high temperature optical fiber
BABCOCK & WILCOX CO20 citations81
US5226730AJul 13, 1993
Internal temperature monitor for work pieces
BABCOCK & WILCOX CO11 citations74
US5020379AJun 4, 1991
Microbend fiber optic strain gauge
BABCOCK & WILCOX CO18 citations74
US5010770AApr 30, 1991
Vibrating tube fiber optic pressure transducer with light-powered electro-magnetic drive
BABCOCK & WILCOX CO7 citations74
US5591976AJan 7, 1997
Gamma camera system for imaging contamination
BABCOCK & WILCOX CO17 citations72
US5223918AJun 29, 1993
Fiber optic color balance monitor
BABCOCK & WILCOX CO7 citations71
US4976157ADec 11, 1990
Fiber optic flow sensor
BABCOCK & WILCOX CO18 citations67
US4907883AMar 13, 1990
High-temperature laser induced spectroscopy in nuclear steam generators
BABCOCK & WILCOX CO11 citations66
DAVIDSON INSTR INC
8 patentsUS7492463B2Feb 17, 2009
Method and apparatus for continuous readout of Fabry-Perot fiber optic sensor
DAVIDSON INSTR INC18 citations92
US7355684B2Apr 8, 2008
Interferometric signal conditioner for measurement of the absolute length of gaps in a fiber optic Fabry-Perot interferometer
DAVIDSON INSTR INC24 citations92
US7355726B2Apr 8, 2008
Linear variable reflector sensor and signal processor
DAVIDSON INSTR INC23 citations92
US7305158B2Dec 4, 2007
Interferometric signal conditioner for measurement of absolute static displacements and dynamic displacements of a Fabry-Perot interferometer
DAVIDSON INSTR INC17 citations83
US7134346B2Nov 14, 2006
Differential pressure transducer with Fabry-Perot fiber optic displacement sensor
DAVIDSON INSTR INC16 citations83
US7191660B2Mar 20, 2007
Flame shield for high temperature pressure transducer
DAVIDSON INSTR INC3 citations62
US12560500B2Feb 24, 2026
Extrinsic Fabry-Perot absolute pressure sensor
DAVIDSON INSTR INC0 citations51
US7443510B2Oct 28, 2008
Tunable laser for dynamic measurement
DAVIDSON INSTR INC0 citations41
MCDERMOTT TECHNOLOGY INC
6 patentsUS6289143B1Sep 11, 2001
Fiber optic acoustic emission sensor
MCDERMOTT TECHNOLOGY INC72 citations94
US5832157ANov 3, 1998
Fiber optic acoustic emission sensor
MCDERMOTT TECHNOLOGY INC47 citations94
US6097478AAug 1, 2000
Fiber optic acoustic emission sensor
MCDERMOTT TECHNOLOGY INC29 citations91
US6490040B1Dec 3, 2002
Fume sensor system and methods for background noise suppression
MCDERMOTT TECHNOLOGY INC15 citations84
US6270254B1Aug 7, 2001
Extended range fiber-optic temperature sensor
MCDERMOTT TECHNOLOGY INC3 citations63
US6033108AMar 7, 2000
Extended range fiber-optic temperature sensor
MCDERMOTT TECHNOLOGY INC3 citations63
HALLIBURTON ENERGY SERV INC
5 patentsUS7940400B2May 10, 2011
Method and apparatus for continuous readout of fabry-perot fiber optic sensor
HALLIBURTON ENERGY SERV INC24 citations92
US7743661B2Jun 29, 2010
Fiber optic MEMS seismic sensor with mass supported by hinged beams
HALLIBURTON ENERGY SERV INC23 citations91
US7864329B2Jan 4, 2011
Fiber optic sensor system having circulators, Bragg gratings and couplers
HALLIBURTON ENERGY SERV INC7 citations84
US7684051B2Mar 23, 2010
Fiber optic seismic sensor based on MEMS cantilever
HALLIBURTON ENERGY SERV INC9 citations83
US7835598B2Nov 16, 2010
Multi-channel array processor
HALLIBURTON ENERGY SERV INC4 citations62