Patents
US 12644874 B1: Methane emission assessment using mobile surveys over time in a target area
- Granted
- 2026-06-02
- Filed
- 2024-04-27 application 18648344
- Type
- Utility · 21 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
In some embodiments, methane leak emissions are quantified accurately in natural gas distribution systems in which mobile surveys are performed on different parts of a target area over an extended reporting period (e.g. a year or more). Emission calculations depend on repair and/or mobile survey schedules, and employ temporal and/or spatial extrapolation in order to account for imperfect real-time information about system state.
Source: PTBLXML, file of 2026-06-02 (ipgb20260602.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Picarro Inc. 59 patents | US company or organization | Santa Clara, CA | PTBLXML, file of 2026-06-02 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Sean MacMullin | Raleigh, NC | 7 | PTBLXML, file of 2026-06-02 | |
| Francois-Xavier Rongere | Fremont, CA | PTBLXML, file of 2026-06-02 | ||
| Noah Randolph | San Carlos, CA | PTBLXML, file of 2026-06-02 | ||
| Alan Ly | San Francisco, CA | PTBLXML, file of 2026-06-02 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| G01N | Investigating or analysing materials by determining their chemical or physical properties | G01N33/0067 | PTBLXML, file of 2026-06-02 |
| G01M | Testing static or dynamic balance of machines or structures; testing of structures or apparatus, not otherwise provided for | G01M3/007 | PTBLXML, file of 2026-06-02 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2025-01-24 | Assignment Assignment of assignor's interest | MACMULLIN, SEAN signed 2025-01-24 RONGERE, FRANCOIS X signed 2025-01-23 RANDOLPH, NOAH signed 2025-01-17 LY, ALAN signed 2025-01-17 | PICARRO, INC. SANTA CLARA, CA | 69999/915 | PASDL, file of 2026-10-15 |
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.