Patents
US 7395163 B1: Method of detecting system function by measuring frequency response
- Granted
- 2008-07-01
- Filed
- 2007-07-05 application 11825629
- Type
- Utility · 4 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Real time battery impedance spectrum is acquired using one time record, Compensated Synchronous Detection (CSD). This parallel method enables battery diagnostics. The excitation current to a test battery is a sum of equal amplitude sin waves of a few frequencies spread over range of interest. The time profile of this signal has duration that is a few periods of the lowest frequency. The voltage response of the battery, average deleted, is the impedance of the battery in the time domain. Since the excitation frequencies are known, synchronous detection processes the time record and each component, both magnitude and phase, is obtained. For compensation, the components, except the one of interest, are reassembled in the time domain. The resulting signal is subtracted from the original signal and the component of interest is synchronously detected. This process is repeated for each component.
Source: PVGPATDIS, file of 2026-04-10 (ipg080701.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Montana Tech of the University of Montana 7 patents | US company or organization | Butte, MT | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| John L. Morrison | Butte, MT | 18 | PVGPATDIS, file of 2026-04-10 | |
| William H. Morrison | Manchester, CT | 17 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| G01R | Measuring electric variables; measuring magnetic variables | G01R31/389 | 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 |
|---|---|---|---|---|---|
| 2023-08-03 | Government interest Confirmatory license | BATTELLE ENERGY ALLIANCE/IDAHO NAT'L LAB signed 2023-06-23 | UNITED STATES DEPARTMENT OF ENERGY WASHINGTON, DC | 64478/633 | ECORSEXC, file of 2026-09-25 |
| 2016-06-09 | Assignment Assignment of assignor's interest | MOTLOCH, CHESTER G signed 2015-10-02 | BATTELLE ENERGY ALLIANCE, LLC IDAHO FALLS, ID | 38863/760 | ECORSEXC, file of 2026-09-25 |
| 2016-06-07 | Assignment Assignment of assignor's interest | MONTANA TECH OF THE UNIVERSITY OF MONTANA signed 2016-06-06 | BATTELLE ENERGY ALLIANCE, LLC IDAHO FALLS, ID | 38828/893 | ECORSEXC, file of 2026-09-25 |
| 2016-05-10 | Assignment Assignment of assignor's interest | QUALTECH SYSTEMS, INC. signed 2016-04-26 | BATTELLE ENERGY ALLIANCE, LLC. IDAHO FALLS, ID | 38529/15 | ECORSEXC, file of 2026-09-25 |
| 2015-10-13 | Assignment Assignment of assignor's interest | CHRISTOPHERSEN, JON P signed 2015-10-08 | BATTELLE ENERGY ALLIANCE, LLC IDAHO FALLS, ID | 36780/571 | ECORSEXC, file of 2026-09-25 |
| 2011-01-19 | Assignment Assignment of assignor's interest | MORRISON, WILLIAM signed 2010-12-14 | QUALTECH SYSTEMS, INC. EAST HARTFORD, CT | 25663/719 | ECORSEXC, file of 2026-09-25 |
| 2010-12-20 | Assignment Assignment of assignor's interest | MORRISON, JOHN L signed 2010-12-16 | MONTANA TECH OF THE UNIVERSITY OF MONTANA BUTTE, MT | 25529/875 | 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.