Inventor

John W. Berthold

Inventor

Salem, OH, US

Overview

50→

Patents

1981–2012

Patent span

Physics

Primary field (CPC G)

Patents· 50 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G01Lprimary

G01LMeasuring force, stress, torque, work, mechanical power, mechanical efficiency, or fluid pressure15%

G01DMeasuring not specially adapted for a specific variable11%

G01BMeasuring length, thickness or similar linear dimensions9%

G01NInvestigating or analysing materials by determining their chemical or physical properties9%

G01HMeasurement of mechanical vibrations or ultrasonic, sonic or infrasonic waves7%

G01JMeasurement of intensity, velocity, spectral content, polarisation, phase or pulse characteristics of infrared, visible or ultraviolet light5%

G01KMeasuring temperature5%

G02BOptical elements, systems or apparatus4%

F23NRegulating or controlling combustion3%

G01PMeasuring linear or angular speed, acceleration, deceleration, or shock3%

PatentTitleYear

8,125,646'Apparatus and methods for monitoring combustion dynamics in a gas turbine engine'2012 7,940,400'Method and apparatus for continuous readout of fabry-perot fiber optic sensor'2011 7,864,329'Fiber optic sensor system having circulators, Bragg gratings and couplers'2011 7,835,598'Multi-channel array processor'2010 7,743,661'Fiber optic MEMS seismic sensor with mass supported by hinged beams'2010 7,684,051'Fiber optic seismic sensor based on MEMS cantilever'2010 7,502,531'Multi-channel array processor'2009 7,492,463'Method and apparatus for continuous readout of Fabry-Perot fiber optic sensor'2009 7,443,510'Tunable laser for dynamic measurement'2008 7,434,472'Differential pressure transducer configurations including displacement sensor'2008 7,355,684'Interferometric signal conditioner for measurement of the absolute length of gaps in a fiber optic Fabry-Perot interferometer'2008 7,355,726'Linear variable reflector sensor and signal processor'2008 7,305,158'Interferometric signal conditioner for measurement of absolute static displacements and dynamic displacements of a Fabry-Perot interferometer'2007 7,191,660'Flame shield for high temperature pressure transducer'2007 7,134,346'Differential pressure transducer with Fabry-Perot fiber optic displacement sensor'2006 7,001,067'Pyrometer for measuring the temperature of a gas component within a furnance'2006 6,733,173'Pyrometer for measuring the temperature of a gas component within a furnace'2004 6,519,041'Hydrogen sensor for fuel cell applications'2003 6,490,040'Fume sensor system and methods for background noise suppression'2002 6,289,143'Fiber optic acoustic emission sensor'2001 6,270,254'Extended range fiber-optic temperature sensor'2001 6,097,478'Fiber optic acoustic emission sensor'2000 6,033,108'Extended range fiber-optic temperature sensor'2000 5,845,033'Fiber optic sensing system for monitoring restrictions in hydrocarbon production systems'1998 5,832,157'Fiber optic acoustic emission sensor'1998 5,591,976'Gamma camera system for imaging contamination'1997 5,517,851'Method and apparatus for predicting onset of intergranular attack and stress corrosion cracking in tubing subjected to hostile environment'1996 5,386,729'Temperature compensated microbend fiber optic differential pressure transducer'1995 5,258,614'Optical fiber loop temperature sensor'1993 5,226,730'Internal temperature monitor for work pieces'1993 5,225,883'Video temperature monitor'1993 5,223,918'Fiber optic color balance monitor'1993 5,220,172'Fluorescence analyzer for lignin'1993 5,216,483'Fluorescence analyzer for lignin'1993 5,206,711'Fluid opacity sensor'1993 5,196,694'Temperature compensated self-referenced fiber optic microbend pressure transducer'1993 5,086,220'Radiation imaging fiber optic temperature distribution monitor'1992 5,035,511'Distributed fiber optic temperature sensor based on time domain transmission'1991 5,020,379'Microbend fiber optic strain gauge'1991 5,010,770'Vibrating tube fiber optic pressure transducer with light-powered electro-magnetic drive'1991 4,976,157'Fiber optic flow sensor'1990 4,907,883'High-temperature laser induced spectroscopy in nuclear steam generators'1990 4,893,895'An improved encased high temperature optical fiber'1990 4,843,234'Consumable electrode length monitor based on optical time domain reflectometry'1989 4,600,836'Diaphragm deflection sensor for fused silica diaphragm module'1986 4,589,286'Fused silica diaphragm module for high temperature pressure transducers'1986 4,536,827'Image collection and object illumination'1985 4,413,879'Method and apparatus for side launch excitation of selected modes in graded-index optical fibers'1983 4,387,594'Water level indicator having a remote and a local readout display'1983 4,262,992'Variable integrated optical logic element'1981

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1981–1983Based in College Park, MD, US· patent location history

1983–1998Patents assigned to BABCOCK & WILCOX CO (23)· patent assignee history

1983–2012Based in Salem, OH, US· patent location history

1998–2002Patents assigned to MCDERMOTT TECHNOLOGY INC (6)· patent assignee history

2004–2006Patents assigned to DIAMOND POWER INT INC (2)· patent assignee history

2006–2012Patents assigned to DAVIDSON INSTR INC (8)· patent assignee history

2010–2011Patents assigned to HALLIBURTON ENERGY SERV INC (5)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
BABCOCK & WILCOX CO	23	1983–1998
DAVIDSON INSTR INC	8	2006–2012
MCDERMOTT TECHNOLOGY INC	6	1998–2002
HALLIBURTON ENERGY SERV INC	5	2010–2011
DIAMOND POWER INT INC	2	2004–2006

Locations

Location	Patents	Span
Salem, OH, US	48	1983–2012
College Park, Maryland, US	2	1981–1983