Patent US3615804A successfully refreshed from Google Patents.
US3615804A
Expired / Lapsed
US
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Bituminous paving mix
Assignee: COUET WALTER STRASSEN TIEFBAU
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Filing: 1968-12-30
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Granted: 1971-10-26
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Expires: 1988-12-30
Abstract
Abstract A street-covering mix comprising crushed gravel, sand, bituminous binding agents, and a filler with a plurality of components; the proportions of gravel, sand and bituminous binders comprise the greater amount, as used in fluid asphalt and asphalt beton, the proportion of filler being decreased; at least one component of the filler being selected to increase the structural viscosity of the mastic formed from the filler and bituminous binding agent.
Inventors
- 👤 Hans Peter Defregger
- 👤 Georgi Georgieff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:35
CPC Classifications
E; E01; E01C; E01C13/00; E01C13/06; E01C13/065; C; C08; C08L; C08L95/00; E01C7/00; E01C7/08; E01C7/18; E01C7/26; E01C7/262; E01C7/265
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
54 words
A street covering such as for a tennis court comprising about 0.4% caoutchouc particles about 7.1% limestone or slate powder about 3.9% fine sand 0.09 mm. to 0.2 mm. about 0.023% wetting agents about 7.5% Bitumen about 46.0% crushed gravel-size about 2 to 8 mm. about 35.0% sand-size about 0.09 mm. to 2 mm.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |