Patents
US 11561149 B2: Methods for gas leak detection and localization in populated areas having a distance estimate
- Granted
- 2023-01-24
- Filed
- 2018-11-16 application 16193688
- Type
- Utility · 15 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Improved gas leak detection from moving platforms is provided. Automatic horizontal spatial scale analysis can be performed in order to distinguish a leak from background levels of the measured gas. Source identification can be provided by using isotopic ratios and/or chemical tracers to distinguish gas leaks from other sources of the measured gas. Multi-point measurements combined with spatial analysis of the multi-point measurement results can provide leak source distance estimates. These methods can be practiced individually or in any combination.
Source: PVGPATDIS, file of 2026-04-10 (ipg230124_r1.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 |
|---|---|---|---|---|
| Chris W. Rella | Sunnyvale, CA | 45 | PVGPATDIS, file of 2026-04-10 | |
| Eric R. Crosson | Livermore, CA | 19 | PVGPATDIS, file of 2026-04-10 | |
| Michael R. Woelk | Livermore, CA | 6 | PVGPATDIS, file of 2026-04-10 | |
| Sze Meng Tan | Santa Clara, CA | 41 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| G01M | Testing static or dynamic balance of machines or structures; testing of structures or apparatus, not otherwise provided for | G01M3/20 | PVGPATDIS, file of 2026-04-10 |
| G01N | Investigating or analysing materials by determining their chemical or physical properties | G01N21/01 | 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 |
|---|---|---|---|---|---|
| 2021-06-02 | Release of security interest Release of security interest | SILICON VALLEY BANK signed 2021-05-27 | PICARRO, INC. SANTA CLARA, CA | 57252/674 | ECORSEXC, file of 2026-09-25 |
| 2019-04-29 | Security interest Security interest Security interest | PICARRO, INC. signed 2019-04-26 | SILICON VALLEY BANK SANTA CLARA, CA | 49020/796 | ECORSEXC, file of 2026-09-25 |
| 2018-11-16 | Assignment Assignment of assignor's interest | CROSSON, ERIC R. signed 2012-10-19 RELLA, CHRIS W. signed 2012-10-19 TAN, SZE MENG signed 2012-10-19 WOELK, MICHAEL R. signed 2012-10-19 | PICARRO, INC. SANTA CLARA, CA | 47528/849 | 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.