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ENVIRONMENTAL RESEARCH & TECHNOLOGY, INC.
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LEXINGTON, MA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Infrared detector for NDIR gas analysis
Patent number
4,605,313
Issue date
Aug 12, 1986
Environmental Research & Technology, Inc.
Paul L. Kebabian
G01 - MEASURING TESTING
Information
Patent Grant
Activated sludge wastewater treating process
Patent number
4,537,682
Issue date
Aug 27, 1985
Environmental Research & Technology
George M. Wong-Chong
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Process for purifying hydrocarbonaceous oils
Patent number
4,485,007
Issue date
Nov 27, 1984
Environmental Research and Technology Inc.
Patrick S. Tam
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information
Patent Grant
Dual frequency laser
Patent number
4,397,025
Issue date
Aug 2, 1983
Environmental Research & Technology, Inc.
Paul L. Kebabian
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Light equalizer and method of making same
Patent number
4,112,028
Issue date
Sep 5, 1978
Environmental Research & Technology, Inc.
Henry H. Blau
G02 - OPTICS
Information
Patent Grant
Method of making a light equalizer
Patent number
4,111,731
Issue date
Sep 5, 1978
Environmental Research & Technology, Inc.
Henry H. Blau
G02 - OPTICS
Information
Patent Grant
Gas detector
Patent number
4,059,356
Issue date
Nov 22, 1977
Environmental Research & Technology, Inc.
Paul L. Kebabian
G01 - MEASURING TESTING
Information
Patent Grant
Optical system using light equalizer with partially reflective plan...
Patent number
3,997,240
Issue date
Dec 14, 1976
Environmental Research & Technology, Inc.
Paul L. Kebabian
G02 - OPTICS
Information
Patent Grant
Light equalizer
Patent number
3,970,375
Issue date
Jul 20, 1976
Environmental Research & Technology, Inc.
Henry H. Blau
G02 - OPTICS
Patents Applications
last 30 patents
Trademark
last 30 trademarks
Information
Trademark
73510533 - ERT
Serial number
73510533
Registration number
1380759
Filing date
Nov 26, 1984
Environmental Research & Technology, Inc.
37 - Building construction
Information
Trademark
73214460 - BIOSTRAT
Serial number
73214460
Registration number
1173699
Filing date
May 7, 1979
Environmental Research & Technology, Inc.
42 - Scientific and technological services and research and design relating thereto
Information
Trademark
73212799 - FLEETMAP
Serial number
73212799
Registration number
1159499
Filing date
Apr 23, 1979
Environmental Research & Technology, Inc.
42 - Scientific and technological services and research and design relating thereto
Information
Trademark
73212833 - MOTR
Serial number
73212833
Registration number
1179575
Filing date
Apr 23, 1979
Environmental Research & Technology, Inc.
42 - Scientific and technological services and research and design relating thereto
Information
Trademark
73176534 - ENVIRONET
Serial number
73176534
Registration number
1131016
Filing date
Jun 29, 1978
ENVIRONMENTAL RESEARCH & TECHNOLOGY, INC.
42 - Scientific and technological services and research and design relating thereto
Information
Trademark
73175489 - SEAMAP
Serial number
73175489
Registration number
1122104
Filing date
Jun 22, 1978
ENVIRONMENTAL RESEARCH & TECHNOLOGY, INC.
42 - Scientific and technological services and research and design relating thereto
Information
Trademark
73095151 - ERT
Serial number
73095151
Registration number
1105809
Filing date
Jul 30, 1976
ENVIRONMENTAL RESEARCH AND TECHNOLOGY,INC.
42 - Scientific and technological services and research and design relating thereto
Information
Trademark
73034579 - ENVIROMAP
Serial number
73034579
Registration number
1026399
Filing date
Oct 15, 1974
ENVIRONMENTAL RESEARCH & TECHNOLOGY, INC.
42 - Scientific and technological services and research and design relating thereto
Information
Trademark
73026172 - RADMAP
Serial number
73026172
Registration number
1011743
Filing date
Jul 5, 1974
ENVIRONMENTAL RESEARCH & TECHNOLOGY, INC.
42 - Scientific and technological services and research and design relating thereto
Information
Trademark
73026173 - WATERMAP
Serial number
73026173
Registration number
1010079
Filing date
Jul 5, 1974
ENVIRONMENTAL RESEARCH & TECHNOLOGY, INC.
42 - Scientific and technological services and research and design relating thereto