Patent US3874445A successfully refreshed from Google Patents.
Patent US2875084A successfully refreshed from Google Patents.
US2875084A
Expired / Lapsed
US
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Road surfacing material
Assignee: Shanks & Mcewan Ltd And Colvil
•
Filing: 1957-05-06
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Granted: 1959-02-24
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Expires: 1977-05-06
Abstract
No abstract record available.
Inventors
- 👤 William A Posnett
- 👤 Ferguson John Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:40
CPC Classifications
E; E01; E01C; E01C7/00; E01C7/08; E01C7/18; E01C7/182
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
27 words
A ROAD SURFACING MATERIAL COMPRISING A WATER INSOLUBLE BITUMINOUS BINDER MIXED WITH CRUSHED SLAG SELECTED FROM THE GROUP CONSISTING OF BASIC OPEN HEARTH AND BASIC BESSEMER SLAG.
Claim 2
Dependent Claim
27 words
A ROAD SURFACING MATERIAL COMPRISING A WATER INSOLUBLE BITUMINOUS BINDER MIXED WITH CRUSHED SLAG SELECTED FROM THE GROUP CONSISTING OF BASIC OPEN HEARTH AND BASIC BESSEMER SLAG.
References Cited (Backward Citations)
US128680A
Cited
GB189418210A
Cited
GB190526539A
Cited
US1505880A
Cited
GB285179A
Cited
GB521626A
Cited
US2550476A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-23 | 1962-08-25 | 1963-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-23 | 1966-08-25 | 1967-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-23 | 1970-08-25 | 1971-02-24 | $7700.00 | Window Closed / Lapsed |