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Inventor

Andrew D. Sappey

Inventor
Lakewood, CO, US

Overview

23→
Patents
1997–2021
Patent span
Physics
Primary field (CPC G)

Patents· 23 as inventor

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

G01Nprimary
G01NInvestigating or analysing materials by determining their chemical or physical properties23%
G02BOptical elements, systems or apparatus20%
G01JMeasurement of intensity, velocity, spectral content, polarisation, phase or pulse characteristics of infrared, visible or ultraviolet light14%
F23NRegulating or controlling combustion12%
F23MCasings, linings, walls or doors specially adapted for combustion chambers, e.g. firebridges6%
B01DSeparation5%
F02CGas-turbine plants3%
F05DIndexing scheme for aspects relating to non-positive-displacement machines or engines, gas-turbines or jet-propulsion plants3%
A61BDiagnosis2%
F01DNon-positive displacement machines or engines, e.g. steam turbines2%
PatentTitleYear
10,948,184Method and apparatus for monitoring port blockage for TDLAS measurements in harsh environments202110,830,698TDLAS architecture for widely spaced wavelength202010,738,997Method and apparatus for verification of TDLAS system operation202010,371,378Method and apparatus for monitoring port blockage for TDLAS measurements in harsh environments201910,352,852TDLAS architecture for widely spaced wavelengths20199,366,621'In-furnace retro-reflectors with steerable tunable diode laser absorption spectrometer'20168,786,857'Mitigation of optical signal noise using a multimode transmit fiber'20148,786,856'Method and apparatus for monitoring combustion properties in an interior of a boiler'20148,699,011'Time-synchronized TDLAS measurements of pressure and temperature in a gas turbine engine'20148,544,279'Method and apparatus for spectroscopic measurements in the combustion zone of a gas turbine engine'20138,255,169'Binning and tomography for high spatial resolution temperature and species concentration measurements'20127,729,566'Method for the monitoring and control of a process'20107,469,092'Method and apparatus for the monitoring and control of a process'20087,389,027'Method and apparatus for the monitoring and control of a process'2008RE040271'Echelle grating dense wavelength division multiplexer/demultiplexer'20087,248,755'Method and apparatus for the monitoring and control of combustion'20076,647,182'Echelle grating dense wavelength division multiplexer/demultiplexer'20036,421,481'Apparatus and method for producing a flat-topped filter response for diffraction grating (De) multiplexer'20026,415,080'Echelle grating dense wavelength division multiplexer/demultiplexer'20026,400,509'Apparatus and method for the reduction of polarization sensitivity in diffraction gratings used in fiber optic communications devices'20026,304,692'Echelle grating dense wavelength division multiplexer/demultiplexer with two dimensional single channel array'20015,738,101'Optical imaging through turbid media with a degenerate four-wave mixing correlation time gate'19985,679,957'Method and apparatus for monitoring mercury emissions'1997

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1997–1998Based in Golden, CO, US· patent location history
2001–2016Patents assigned to ZOLO TECHNOLOGIES INC (16)· patent assignee history
2001–2021Based in Lakewood, CO, US· patent location history
2012–2014Patents assigned to HOFVANDER HENRIK (5)· patent assignee history
2012–2014Patents assigned to SAPPEY ANDREW D (5)· patent assignee history
2012–2014Patents assigned to HOWELL JAMES (3)· patent assignee history
2019–2020Patents assigned to JOHN ZINK CO LLC (3)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
ZOLO TECHNOLOGIES INC162001–2016
HOFVANDER HENRIK52012–2014
SAPPEY ANDREW Dself52012–2014
HOWELL JAMES32012–2014
JOHN ZINK CO LLC32019–2020
Locations
LocationPatentsSpan
Lakewood, CO, US212001–2021
Golden, CO, US21997–1998