Patents
US 11428651 B2: System and method for x-ray absorption spectroscopy using a crystal analyzer and a plurality of detector elements
- Granted
- 2022-08-30
- Filed
- 2021-11-23 application 17533568
- Type
- Utility · 25 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A fluorescence mode x-ray absorption spectroscopy apparatus includes an electron bombardment source of x-rays, a crystal analyzer, the source and the crystal analyzer defining a Rowland circle having a Rowland circle radius (R), a detector, and at least one stage configured to position a sample such that at least a portion of the sample is between the crystal analyzer and the detector.
Source: PVGPATDIS, file of 2026-04-10 (ipg220830.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Sigray, Inc. 52 patents | US company or organization | Concord, CA | SIGRAY, INC. State business registration EXACT high confidence: identical full name and state | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Wenbing Yun | Walnut Creek, CA | 71 | PVGPATDIS, file of 2026-04-10 | |
| Srivatsan Seshadri | Pleasanton, CA | 16 | PVGPATDIS, file of 2026-04-10 | |
| Ruimin Qiao | Berkeley, CA | 3 | PVGPATDIS, file of 2026-04-10 | |
| Janos Kirz | Berkeley, CA | 51 | PVGPATDIS, file of 2026-04-10 | |
| Sylvia Jia Yun Lewis | San Francisco, CA | 44 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| G01N | Investigating or analysing materials by determining their chemical or physical properties | G01N23/223 | PVGPATDIS, file of 2026-04-10 |
| G21K | Handling of particles or ionising radiation not otherwise provided for; irradiation devices; gamma ray or x-ray microscopes | G21K1/06 | 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 |
|---|---|---|---|---|---|
| 2026-02-10 | Assignment Assignment of assignor's interest | KIRZ, JANOS signed 2021-09-30 LEWIS, SYLVIA JIA YUN signed 2021-10-07 YUN, WENBING signed 2021-10-07 SESHADRI, SRIVATSAN signed 2021-10-25 QIAO, RUIMIN signed 2021-10-26 | SIGRAY, INC. BENICIA, CA | 73749/233 | 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.