Patents
US 8438907 B2: Hydrogen-producing fuel processing systems with a liquid leak detection system
- Granted
- 2013-05-14
- Filed
- 2009-12-03 application 12630762
- Type
- Utility · 15 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Liquid leak detection systems, and fuel cell systems and hydrogen-producing fuel processing systems containing the same. The liquid leak detection systems are adapted to detect liquid leaks from the fuel cell and/or fuel processing systems and to respond thereto, such as by interrupting the delivery of liquid reactants, by generating an alert, by transitioning the fuel processing system to a different operating state, and/or by shutting down the fuel processing and/or fuel cell system. The liquid leak detection systems may include a controller and at least one liquid detector, and in some embodiments may include a cover. In some embodiments, the liquid detector includes a signal emitter and a signal detector. In some embodiments, the liquid detector includes at least a pair of spaced-apart conductive members that nominally define an open circuit. In some embodiments, the cover is adapted to repel water and/or includes conductive particulate.
Source: PVGPATDIS, file of 2026-04-10 (ipg130514.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Idatech, LLC 38 patents | US company or organization | Bend, OR | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Clint A. Beliveau | Bend, OR | 2 | PVGPATDIS, file of 2026-04-10 | |
| Scott C. Elliot | Bend, OR | 2 | PVGPATDIS, file of 2026-04-10 | |
| Vernon Wade Popham | Bend, OR | 9 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| H01M | Processes or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy | H01M8/1011 | PVGPATDIS, file of 2026-04-10 |
| Y02E | Reduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution | Y02E60/50 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2013-03-27 | Security interest Security interest Option | IDATECH, LLC signed 2013-03-13 | DCNS SA 44 620 LA MONTAGNE | 30100/642 | PASDL, file of 2026-10-15 |
| 2009-12-08 | Assignment Assignment of assignor's interest | POPHAM, VERNON WADE signed 2007-05-16 BELIVEAU, CLINT A. signed 2007-05-17 ELLIOTT, SCOTT C. signed 2007-05-17 | IDATECH, LLC BEND, OR | 23622/505 | ECORSEXC, file of 2026-09-25 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.