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Daniel Granville Bills
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Boulder, CO, US
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Patents Grants
last 30 patents
Information
Patent Grant
Apparatus and methods for heat loss pressure measurement
Patent number
6,945,119
Issue date
Sep 20, 2005
Helix Technology Corporation
Daniel G. Bills
G01 - MEASURING TESTING
Information
Patent Grant
Apparatus and methods for heat loss pressure measurement
Patent number
6,938,493
Issue date
Sep 6, 2005
Helix Technology Corporation
Daniel G. Bills
G01 - MEASURING TESTING
Information
Patent Grant
Apparatus and methods for heat loss pressure measurement
Patent number
6,865,952
Issue date
Mar 15, 2005
Helix Technology Corporation
Daniel G. Bills
G01 - MEASURING TESTING
Information
Patent Grant
Apparatus and methods for heat loss pressure measurement
Patent number
6,658,941
Issue date
Dec 9, 2003
Helix Technology Corporation
Daniel Granville Bills
G01 - MEASURING TESTING
Information
Patent Grant
Force balancing capacitance manometer
Patent number
6,412,349
Issue date
Jul 2, 2002
Helix Technology Corporation
Daniel Granville Bills
G01 - MEASURING TESTING
Information
Patent Grant
Methods of pressure measurement
Patent number
6,227,056
Issue date
May 8, 2001
Helix Technology Corporation
Daniel Granville Bills
G01 - MEASURING TESTING
Information
Patent Grant
Miniature ionization gauge utilizing multiple ion collectors
Patent number
6,198,105
Issue date
Mar 6, 2001
Helix Technology Corporation
Daniel Granville Bills
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Ionization gauge and method of using and calibrating same
Patent number
6,081,121
Issue date
Jun 27, 2000
Helix Technology Corporation
Daniel Granville Bills
G01 - MEASURING TESTING
Information
Patent Grant
Miniature ionization gauge utilizing multiple ion collectors
Patent number
6,046,456
Issue date
Apr 4, 2000
Helix Technology Corporation
Daniel Granville Bills
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Miniature ionization gauge utilizing multiple ion collectors
Patent number
6,025,723
Issue date
Feb 15, 2000
Granville-Phillips Company
Daniel Granville Bills
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Apparatus and methods for heat loss pressure measurement
Patent number
6,023,979
Issue date
Feb 15, 2000
Helix Technology
Daniel Granville Bills
G01 - MEASURING TESTING
Information
Patent Grant
Force balancing capacitance manometer
Patent number
5,902,932
Issue date
May 11, 1999
Granville-Phillips Company
Daniel Granville Bills
G01 - MEASURING TESTING
Information
Patent Grant
Ionization gauge and method of using and calibrating same
Patent number
5,801,535
Issue date
Sep 1, 1998
Granville-Phillips Company
Daniel Granville Bills
G01 - MEASURING TESTING
Information
Patent Grant
Wide range vacuum gauge
Patent number
5,452,613
Issue date
Sep 26, 1995
Granville-Phillips Company
Daniel G. Bills
G01 - MEASURING TESTING
Information
Patent Grant
Ionization gauge and method of using and calibrating same
Patent number
5,422,573
Issue date
Jun 6, 1995
Granville-Phillips Company
Daniel G. Bills
G01 - MEASURING TESTING
Information
Patent Grant
Ionization gauge and method of using and calibrating same
Patent number
5,296,817
Issue date
Mar 22, 1994
Granville-Phillips Company
Daniel G. Bills
G01 - MEASURING TESTING
Information
Patent Grant
Ionization gauge and method of using and calibrating same
Patent number
5,250,906
Issue date
Oct 5, 1993
Granville-Phillips Company
Daniel G. Bills
G01 - MEASURING TESTING
Information
Patent Grant
Ionization vacuum gauge with emission of electrons in parallel paths
Patent number
5,128,617
Issue date
Jul 7, 1992
Granville-Phillips Company
Daniel G. Bills
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Vacuum gauge
Patent number
4,636,680
Issue date
Jan 13, 1987
Granville-Phillips Company
Daniel G. Bills
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Vacuum gauge
Patent number
4,307,323
Issue date
Dec 22, 1981
Granville-Phillips Company
Daniel G. Bills
H01 - BASIC ELECTRIC ELEMENTS
Patents Applications
last 30 patents
Information
Patent Application
APPARATUS AND METHODS FOR HEAT LOSS PRESSURE MEASUREMENT
Publication number
20040216528
Publication date
Nov 4, 2004
Helix Technology Corporation
Daniel G. Bills
G01 - MEASURING TESTING
Information
Patent Application
Apparatus and methods for heat loss pressure measurement
Publication number
20040216527
Publication date
Nov 4, 2004
Helix Technology Corporation
Daniel G. Bills
G01 - MEASURING TESTING
Information
Patent Application
Apparatus and methods for heat loss pressure measurement
Publication number
20030097876
Publication date
May 29, 2003
Helix Technology Corporation
Daniel G. Bills
G01 - MEASURING TESTING