Patents
US 11827257 B2: Mass transit safety notification system and device
- Granted
- 2023-11-28
- Filed
- 2018-07-05 application 16027700
- Type
- Utility · 18 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A system and device that will notify roadway maintenance workers of an approaching mass transit vehicle and, conversely, will notify the operators and administrators of mass transit vehicles of roadway maintenance workers within the vicinity of an approaching section of track.
Source: PVGPATDIS, file of 2026-04-10 (ipg231128.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| STC, Inc. 34 patents | US company or organization | McLeansboro, IL | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Brad Cross | McLeansboro, IL | 32 | PVGPATDIS, file of 2026-04-10 | |
| Destry Diefenbach | Benton, IL | 6 | PVGPATDIS, file of 2026-04-10 | |
| Yogesh Barve | McLeansboro, IL | 4 | PVGPATDIS, file of 2026-04-10 | |
| Pete Ksycki | McLeansboro, IL | 6 | PVGPATDIS, file of 2026-04-10 | |
| Scott Kolts | Dahlgren, IL | 4 | PVGPATDIS, file of 2026-04-10 | |
| Steve McDonald | Carterville, IL | 7 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| B61L | Guiding railway traffic; ensuring the safety of railway traffic | B61L23/06 | PVGPATDIS, file of 2026-04-10 |
| G08G | Traffic control systems | G08G9/00 | 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 |
|---|---|---|---|---|---|
| 2019-04-04 | Assignment Assignment of assignor's interest | BARVE, YOGESH signed 2012-10-15 CROSS, BRAD signed 2012-10-15 DEIFENBACH, DESTRY signed 2012-10-15 KOLTS, SCOTT signed 2012-10-15 KSYCKI, PETE signed 2012-10-15 MCDONALD, STEVE signed 2012-10-15 | STC, INC. MCLEANSBORO, IL | 48795/839 | 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.