Patents
US 12416553 B2: Thermal desorption preconcentrator adapted for spectroscopic gas analysis
- Granted
- 2025-09-16
- Filed
- 2023-07-21 application 18225012
- Type
- Utility · 36 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Improved gas sample preprocessing is provided for scanning optical spectroscopic analysis instruments by tailoring characteristic gas handling times to the scan time Ts of the analysis instrument. In particular, for sample preconcentration, the desorption duration Td of the sample preconcentrator should be ≥2Ts. For gas chromatography, the elution duration Te of relevant eluted species should be ≥2Ts. This advantageously avoids having significant changes in the gas sample within the analysis instrument as a scan is being performed.
Source: PVGPATDIS, file of 2026-04-10 (ipg250916.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Picarro, Inc. 59 patents | US company or organization | Santa Clara, CA | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Kai M. Skog | San Jose, CA | 2 | PVGPATDIS, file of 2026-04-10 | |
| James M. Hamilton | Sunnyvale, CA | 12 | PVGPATDIS, file of 2026-04-10 | |
| Chris W. Rella | Sunnyvale, CA | 45 | PVGPATDIS, file of 2026-04-10 | |
| Bruce Richman | Sunnyvale, CA | 7 | PVGPATDIS, file of 2026-04-10 | |
| Elizabeth R. Schemm | Woodside, CA | 1 | PVGPATDIS, file of 2026-04-10 | |
| Rebecca Wernis | Fremont, CA | 1 | 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 | G01N1/405 | 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 |
|---|---|---|---|---|---|
| 2024-12-15 | Assignment Assignment of assignor's interest | HAMILTON, JAMES M. signed 2023-07-21 RELLA, CHRIS W. signed 2023-07-21 RICHMAN, BRUCE A. signed 2023-07-21 SCHEMM, ELIZABETH R. signed 2023-07-21 SKOG, KAI M. signed 2023-07-21 WERNIS, REBECCA ANN signed 2023-07-21 | PICARRO, INC. SANTA CLARA, CA | 69589/404 | 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.