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Keith Bridger
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Washington, DC, US
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Patents Grants
last 30 patents
Information
Patent Grant
High sensitivity noise immune stethoscope
Patent number
9,078,571
Issue date
Jul 14, 2015
Active Signal Technologies, Inc.
Keith Bridger
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
High sensitivity noise immune stethoscope
Patent number
8,265,291
Issue date
Sep 11, 2012
Active Signal Technologies, Inc.
Keith Bridger
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
High-temperature dielectric materials and capacitors made therefrom
Patent number
7,697,263
Issue date
Apr 13, 2010
Active Signal Technologies, Inc.
Keith Bridger
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Brain assessment monitor
Patent number
6,887,199
Issue date
May 3, 2005
Active Signal Technologies, Inc.
Keith Bridger
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Compact hybrid actuator
Patent number
6,751,954
Issue date
Jun 22, 2004
Keith Bridger
B64 - AIRCRAFT AVIATION COSMONAUTICS
Information
Patent Grant
Physiological sensing device
Patent number
6,491,647
Issue date
Dec 10, 2002
Active Signal Technologies, Inc.
Keith Bridger
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Apparatus and method for measurement of intracranial pressure with...
Patent number
5,919,144
Issue date
Jul 6, 1999
Active Signal Technologies, Inc.
Keith Bridger
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Integrated composite acoustic transducer array
Patent number
5,629,578
Issue date
May 13, 1997
Martin Marietta Corp.
Stephen R. Winzer
B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
Information
Patent Grant
Composition for use in dry products
Patent number
5,567,519
Issue date
Oct 22, 1996
Martin Marietta Magnesia Specialties, Inc.
Clement P. Stoney
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
High energy density lead magnesium niobate-based dielectric ceramic...
Patent number
5,337,209
Issue date
Aug 9, 1994
Martin Marietta Corporation
Audrey E. Sutherland
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Carbonaceous binder
Patent number
5,240,498
Issue date
Aug 31, 1993
Martin Marietta Magnesia Specialties Inc.
Ralph Matalon
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Sol-gel preparation of polycrystalline strontium barium niobate (SBN)
Patent number
5,011,796
Issue date
Apr 30, 1991
Martin Marietta Corporation
Keith Bridger
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Low temperature binder compound for refractory aggregates and refra...
Patent number
4,981,821
Issue date
Jan 1, 1991
Martin Marietta Magnesia Specialties Inc.
James W. Stendera
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Patents Applications
last 30 patents
Information
Patent Application
HIGH SENSITIVITY NOISE IMMUNE STETHOSCOPE
Publication number
20120302920
Publication date
Nov 29, 2012
Active Signal Technologies, Inc.
Keith Bridger
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Application
High-Temperature Dielectric Materials and Capacitors Made Therefrom
Publication number
20080239627
Publication date
Oct 2, 2008
Keith Bridger
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Application
High sensitivity noise immune stethoscope
Publication number
20070165872
Publication date
Jul 19, 2007
Active Signal Technologies, Inc.
Keith Bridger
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Application
Compact hybrid actuator
Publication number
20030126981
Publication date
Jul 10, 2003
Keith Bridger
F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information
Patent Application
Brain assessment monitor
Publication number
20020198469
Publication date
Dec 26, 2002
Keith Bridger
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC