Patents
US 11525819 B1: Leak detection event aggregation and ranking systems and methods
- Granted
- 2022-12-13
- Filed
- 2021-03-12 application 17249795
- Type
- Utility · 15 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
In some embodiments, data from multiple vehicle-based natural gas leak detection survey runs are used by computer-implemented machine learning systems to generate a list of natural gas leaks ranked by hazard level. A risk model embodies training data having known hazard levels, and is used to classify newly-discovered leaks. Hazard levels may be expressed by continuous variables, and/or probabilities that a given leak fits within a predefined category of hazard (e.g. Grades 1-3). Each leak is represented by a cluster of leak indications (peaks) originating from a common leak sources. Hazard-predictive features may include maximum, minimum, mean, and/or median CH4/amplitude of aggregated leak indications; estimated leak flow rate, determined from an average of leak indications in a cluster; likelihood of leak being natural gas based on other indicator data (e.g. ethane concentration); probability the leak was detected on a given pass; and estimated distance to leak source.
Source: PVGPATDIS, file of 2026-04-10 (ipg221213.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 |
|---|---|---|---|---|
| Sean MacMullin | Santa Clara, CA | 7 | PVGPATDIS, file of 2026-04-10 | |
| Chris W. Rella | Sunnyvale, CA | 45 | PVGPATDIS, file of 2026-04-10 | |
| Aaron Van Pelt | Hayward, CA | 5 | PVGPATDIS, file of 2026-04-10 | |
| Alex Balkanski | Woodside, CA | 3 | PVGPATDIS, file of 2026-04-10 | |
| Yonggang He | Union City, CA | 11 | PVGPATDIS, file of 2026-04-10 | |
| Sze Meng Tan | Sunnyvale, CA | 41 | PVGPATDIS, file of 2026-04-10 | |
| David Steele | San Francisco, CA | 14 | PVGPATDIS, file of 2026-04-10 | |
| Tim Clark | Nottingham, PA | 5 | 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 | G01N33/0075 | PVGPATDIS, file of 2026-04-10 |
| G01M | Testing static or dynamic balance of machines or structures; testing of structures or apparatus, not otherwise provided for | G01M3/04 | 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 |
|---|---|---|---|---|---|
| 2021-03-15 | Assignment Assignment of assignor's interest | BALKANSKI, ALEX signed 2020-11-12 HE, YONGGANG signed 2020-11-12 TAN, SZE MENG signed 2020-11-12 VAN PELT, AARON signed 2020-11-12 MACMULLIN, SEAN signed 2020-11-13 STEELE, DAVID signed 2020-11-13 CLARK, TIM signed 2021-01-05 RELLA, CHRIS W. signed 2021-02-01 | PICARRO, INC. SANTA CLARA, CA | 55592/98 | 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.