Patents
US 8922229 B2: Method for measurement of a power device
- Granted
- 2014-12-30
- Filed
- 2010-06-16 application 13380484
- Type
- Utility · 19 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A method is disclosed for the measurement of a power device in a prober, which serves the examination and testing of such components. In the process, a power device is held by a chuck, and at least one electric probe is held by a probe holder, and optionally, the power device or the probe is positioned each relative to the other using a positioning device with an electrical drive, and contacts the power device. At the same time, an electrical connection remains between the probe to a signal unit with which a power signal is sent out or received, is blocked and only unblocked when it is determined that the contact between probe 26 and contact area is established.
Source: PVGPATDIS, file of 2026-04-10 (ipg141230.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Cascade Microtech, Inc. 96 patents | US company or organization | Beaverton, OR | CASCADE MICROTECH INC SEC filer EXACT medium confidence: identical full name, one of each nationally | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Botho Hirschfeld | Dresden, DE | 6 | PVGPATDIS, file of 2026-04-10 | |
| Stojan Kanev | Ortrand, DE | 36 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| G01R | Measuring electric variables; measuring magnetic variables | G01R31/2891 | 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 |
|---|---|---|---|---|---|
| 2025-08-07 | Release of security interest Release of security interest | HSBC BANK USA, NATIONAL ASSOCIATION signed 2025-08-06 | FORMFACTOR, INC. LIVERMORE, CA | 72853/1 | PASDL, file of 2026-10-15 |
| 2025-07-29 | Security interest Security interest Security interest | FORMFACTOR, INC. signed 2025-07-29 | WELLS FARGO BANK, NATIONAL ASSOCIATION, AS ADMINISTRATIVE AGENT SAN ANTONIO, TX | 72263/272 | PASDL, file of 2026-10-25 |
| 2021-09-01 | Assignment Assignment of assignor's interest | FORMFACTOR BEAVERTON, INC. signed 2021-08-26 | FORMFACTOR, INC. LIVERMORE, CA | 57393/609 | PASDL, file of 2026-10-15 |
| 2018-07-18 | Name change Change of name | CASCADE MICROTECH, INC. signed 2018-05-14 | FORMFACTOR BEAVERTON, INC. BEAVERTON, OR | 46573/664 | PASDL, file of 2026-10-15 |
| 2016-07-12 | Security interest Security interest Security interest in united states patents and trademarks | FORMFACTOR, INC. signed 2016-06-24 ASTRIA SEMICONDUCTOR HOLDINGS, INC. signed 2016-06-24 CASCADE MICROTECH, INC. signed 2016-06-24 MICRO-PROBE INCORPORATED signed 2016-06-24 | HSBC BANK USA, NATIONAL ASSOCIATION SAN FRANCISCO, CA | 39184/280 | PASDL, file of 2026-10-15 |
| 2012-03-06 | Assignment Assignment of assignor's interest | HIRSCHFELD, BOTHO signed 2012-02-28 KANEV, STOJAN signed 2012-02-28 | CASCADE MICROTECH, INC. BEAVERTON, OR | 27811/573 | 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.