William E Hoagland, 657324 N Viewscape Dr, Prescott Valley, AZ 86315

6895805, May 24, 2005

Dec 5, 2001

10/450007

William Hoagland - Boulder CO, US

G01N007/00

73 3106, 73 3105, 422 56, 422 58

A hydrogen gas indicator system that provides various substrate materials () that support hydrogen gas sensor () materials with discrete indicia () that provide information separate from any change in the physical properties of the hydrogen gas sensor itself.

8574917, Nov 5, 2013

Nov 26, 2008

12/324597

William Hoagland - Boulder CO, US
David K. Benson - Golden CO, US
Rodney D. Smith - Golden CO, US

Element One, Inc. - Boulder CO

G01N 33/00

436102, 436119, 436164, 422 8205, 422 85

Disclosed is a pigment that changes color upon exposure to hydrogen sulfide gas. The pigment may be ground or otherwise reduced to small particles and used in coatings, dyes, paints or inks. Potential applications for paints and inks include the production of warning indicators for the presence of hydrogen gas in areas where such presence may pose a hazard. Warning decals may be printed with pigmented ink and posted in areas of potential hydrogen hazard. In the presence of hydrogen sulfide gas, the decals can display a warning by causing a change in the color of a printed message. Objects may also be coated with pigmented paints so that if a hydrogen sulfide leak occurs from within or nearby the object, the color of the object changes to provide a warning of the presence of leaked hydrogen sulfide. Example applications of such painted objects include any industrial process containing hydrogen sulfide.

8636883, Jan 28, 2014

Mar 12, 2007

11/685179

William Hoagland - Boulder CO, US
David K. Benson - Golden CO, US

Element One, Inc. - Boulder CO

G01N 27/26

204400, 204402, 204406, 204407, 422 8202

A remotely readable hydrogen detector is in the form of a tag or card that can be worn on clothing or mounted on a variety of surfaces and can be monitored from a distance for the presence of hydrogen gas. It includes a hydrogen sensor device, which changes in electrical resistivity in response to being exposed to hydrogen gas, that is incorporated into an electric detector circuit, which detects changes in resistivity of the sensor device, and, when such change in resistivity indicates the presence of some predetermined concentration of hydrogen gas, the electric circuit outputs a signal or state that indicates the presence of hydrogen to a transceiver circuit, which can transmit that information to a remote receiver or interrogator/reader via an antenna in the sensor device.

2007008, Apr 26, 2007

Sep 5, 2006

11/470218

William Hoagland - Boulder CO, US
David Benson - Golden CO, US
Rodney Smith - Golden CO, US

G01N 27/26

204424000

A hydrogen gas leak detector comprises a thin film hydrogen detector on a sheet of conformable substrate material, for example, a plastic cling wrap material or a plastic heat shrink material, that is wrappable around a component from which hydrogen gas might leak or evolve. The thin film hydrogen detector may comprise a thin film hydrogen detecting material, for example, a metal oxide, and a thin film catalyst material. The conformable substrate material can be transparent or translucent.

2007025, Nov 1, 2007

Oct 26, 2006

11/553400

William Hoagland - Boulder CO, US
David Benson - Golden CO, US
Rodney Smith - Golden CO, US

G01N 27/26

204424000, 427124000

Disclosed are chemochromic nanoparticles that can be used as pigments in paints, dyes, coatings, and inks. Because of the small size of the nanoparticles, there is an increased surface area of the chemochromic material that increases the speed of the response of the chemochromic material. The nanoparticles can also be employed in thin film detectors.

2018005, Feb 22, 2018

Aug 8, 2017

15/672184

William Hoagland - Boulder CO, US
David K. Benson - Golden CO, US
Rodney D. Smith - Golden CO, US

G01N 33/00
G01N 21/78
G01N 27/04

Element One has developed thin films have the ability to quickly, reliably and cost-effectively detect the presence of dissolved hydrogen in liquids through either a visible color change or a measurable resistance change. Thin film sensors are multi-layer thin film devices incorporating a substrate, an active transition metal oxide layer, a discontinuous catalyst layer, as necessary nn additional protective layer. This invention may be used for early detection of fault conditions in transformer oils allowing low cost tests that can effectively Such thin films can also detect the presence of dissolved hydrogen in aqueous solutions for certain therapeutic heath drinks and other applications.

2017010, Apr 13, 2017

Nov 8, 2016

15/346615

- Boulder CO, US
Mark C. Hatje - West Haven CT, US
William Hoagland - Boulder CO, US
John Poplawski - Meriden CT, US

G01N 21/78
G01N 33/00

This invention relates to a tape product, and method of manufacturing the product, which incorporates a gas sensing pigment that causes the tape to change color upon exposure to gases such as hydrogen or hydrogen sulfide. The gas sensing pigment is compounded together with a silicone rubber to produce a self-fusing silicone tape which may be applied in a variety of industrial environments where hydrogen or hydrogen sulfide gas leakage is a concern. The tape may be colored to enhance visibility and/or to indicate which hazardous gas it is intended to detect. The tape may be fiber reinforced with carbon fiber to increase its longitudinal strength for industrial applications. Periodic perforations across the width of the tape may be added to facilitate the tearing or cutting of convenient lengths of the tape.