Steven D Liddiard from 9285 Sagecrest Cir, Sandy, UT 84093, age 60, Phone: 801 943-3766

Magnetic Head For X-Ray Source
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US Patent:

7428298, Sep 23, 2008
Filed:

Mar 30, 2006
Appl. No.:

11/395531
Inventors:

Erik C. Bard - Orem UT, US
Charles R. Jensen - American Fork UT, US
Arturo Reyes - Orem UT, US
Shaun P. Ogden - Pleasant Grove UT, US
Steven D. Liddiard - Provo UT, US
Assignee:

Moxtek, Inc. - Orem UT
International Classification:

H01J 35/14
H01J 35/30
H01J 2/00
US Classification:

378138, 378137, 378119
Abstract:

An X-ray source includes a magnetic appliance to provide electron beam focusing. The magnetic appliance can provide variably focused and non-focused configurations. The magnetic appliance can include one or more electromagnets and/or permanent magnets. An electric potential difference is applied to an anode and a cathode that are disposed on opposite sides of an evacuated tube. The cathode includes a cathode element to produce electrons that are accelerated towards the anode in response to the electric field between the anode and the cathode. The anode includes a target material to produce x-rays in response to impact of electrons.

Cathode Header Optic For X-Ray Tube
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US Patent:

7529345, May 5, 2009
Filed:

Jul 18, 2007
Appl. No.:

11/879970
Inventors:

Erik C. Bard - Orem UT, US
Steven D. Liddiard - Springville UT, US
Charles R. Jensen - American Fork UT, US
Assignee:

Moxtek, Inc. - Orem UT
International Classification:

H01J 35/06
US Classification:

378136, 378122
Abstract:

A cathode header optic for an x-ray tube includes an elongate trench with opposite trench walls. A cup recess is formed in the trench between the opposite trench walls, and has a bounded perimeter. A cathode element is disposed in the trench at the cup recess. The cathode element is capable of heating and releasing electrons. A secondary cathode optic defining a cathode ring can be disposed about the header optic. The cathode optics can form part of an x-ray tube.

Multiple Wavelength X-Ray Source
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US Patent:

7983394, Jul 19, 2011
Filed:

Dec 17, 2009
Appl. No.:

12/640154
Inventors:

Krzysztof Kozaczek - Midway UT, US
Sterling Cornaby - Springville UT, US
Steven Liddiard - Springville UT, US
Charles Jensen - American Fork UT, US
Assignee:

Moxtek, Inc. - Orem UT
International Classification:

H01J 35/30
H01J 35/06
H01J 35/08
US Classification:

378138, 378136, 378137, 378140, 378143
Abstract:

A multiple wavelength x-ray source includes a multi-thickness target, having at least a first and a second thickness. The first thickness can substantially circumscribe the second thickness. An electron beam can be narrowed to impinge primarily upon second thickness or expanded to impinge primarily upon the first thickness while maintaining a constant direction of the beam. This invention allows the target thickness to be optimized for the desired output wavelength without the need to redirect or realign the x-rays towards the target.

Polymer Layer On X-Ray Window
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US Patent:

8498381, Jul 30, 2013
Filed:

Oct 7, 2010
Appl. No.:

12/899750
Inventors:

Steven Liddiard - Springville UT, US
Brian Taylor - Provo UT, US
Keith Decker - Pleasant Grove UT, US
Jason Maynard - Draper UT, US
Assignee:

Moxtek, Inc. - Orem UT
International Classification:

G21K 1/00
US Classification:

378161
Abstract:

An x-ray window comprising a plurality of thin film layers stacked together, including a thin film layer and a polymer layer. The thin film layer can be diamond, graphene, diamond-like carbon, beryllium, and combinations thereof. The polymer layer can be a polyimide. A boron hydride layer may also be included.

X-Ray Tube Cathode With Reduced Unintended Electrical Field Emission
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US Patent:

20070076849, Apr 5, 2007
Filed:

Sep 28, 2006
Appl. No.:

11/540133
Inventors:

Erik Bard - Orem UT, US
Charles Jensen - American Fork UT, US
Shaun Ogden - Pleasant Grove UT, US
Steven Liddiard - Provo UT, US
International Classification:

H01J 35/00
US Classification:

378121000
Abstract:

An x-ray source has an evacuated tube. An anode is disposed in the tube and includes a material configured to produce x-rays in response to impact of electrons. A cathode is disposed in the tube opposing the anode configured to produce electrons accelerated towards the anode in response to an electric field between the anode and the cathode. A flange extends from the cathode toward the anode, and has a smaller diameter than the evacuated tube. The flange extends closer to the anode than an interface between the cathode and the tube thus forming a reduced-field region between the evacuated tube and the flange.

X-Ray Window With Beryllium Support Structure
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US Patent:

20110121179, May 26, 2011
Filed:

May 20, 2010
Appl. No.:

12/783707
Inventors:

STEVEN D. LIDDIARD - SPRINGVILLE UT, US
KEITH W. DECKER - PLEASANT GROVE UT, US
DEGAO XU - PROVO UT, US
International Classification:

H01J 5/18
G01J 1/00
US Classification:

2503361, 2505051
Abstract:

A high strength window for a radiation detection system has a plurality of ribs comprising beryllium material. There are openings between the plurality of ribs. The tops of the ribs terminate generally in a common plane. The high strength window also has a support frame around a perimeter of the ribs. A layer of thin polymer film material is disposed over and spans the plurality of ribs and openings to pass radiation therethrough. A radiation detection system comprises a high strength window as described above and a sensor behind the window. The sensor is configured to detect radiation that passes through the window.

Reinforced Polymer X-Ray Window
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US Patent:

20120025110, Feb 2, 2012
Filed:

Feb 1, 2011
Appl. No.:

13/018667
Inventors:

Robert C. Davis - Provo UT, US
Steven D. Liddiard - Springville UT, US
Lei Pei - Provo UT, US
Richard R. Vanfleet - Provo UT, US
Charles R. Jensen - American Fork UT, US
Michael Zappe - Orem UT, US
Keith W. Decker - Pleasant Grove UT, US
International Classification:

H01J 5/18
B32B 5/12
B32B 3/10
C08L 79/08
B32B 27/06
B82Y 30/00
US Classification:

2505051, 524606, 428220, 4284735, 428114, 428138, 977742, 977753
Abstract:

An x-ray window comprising a polymer and carbon nanotubes and/or graphene. The carbon nanotubes and/or graphene can be embedded in the polymer. Multiple layers of polymer, carbon nanotubes, and/or graphene may be used. The polymer with carbon nanotubes and/or graphene can be used as an x-ray window support structure and/or thin film.

Multiple-Size Support For X-Ray Window
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US Patent:

20120213336, Aug 23, 2012
Filed:

Dec 6, 2011
Appl. No.:

13/312531
Inventors:

Steven Liddiard - Springville UT, US
International Classification:

G21K 1/00
US Classification:

378161
Abstract:

An x-ray window including a support frame with a perimeter and an aperture. A plurality of ribs can extend across the aperture of the support frame and can be supported or carried by the support frame. Openings exist between ribs to allow transmission of x-rays through such openings with no attenuation of x-rays by the ribs. A film can be disposed over and span the ribs and openings. The ribs can have at least two different cross-sectional sizes including at least one larger sized rib with a cross-sectional area that is at least 5% larger than a cross-sectional area of at least one smaller sized rib.