Patent US3547674A successfully refreshed from Google Patents.
US3547674A
Expired / Lapsed
US
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Prepared surface of polyolefin fabric,asphalt and rubber crumb
Assignee: Phillips Petroleum Co
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Filing: 1967-11-01
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Granted: 1970-12-15
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Expires: 1987-11-01
Abstract
No abstract record available.
Inventors
- 👤 Homer L Draper
- 👤 Dale F Levy
- 👤 Duane W Gagle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:49
CPC Classifications
E; E01; E01C; E01C11/00; E01C11/16; E01C11/165; D; D06; D06N; D06N5/00; E01C13/00; E01C13/06; E01C13/065; E01C7/00; E01C7/08; E01C7/32; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31815; Y10T428/31826; Y10T442/00; Y10T442/20; Y10T442/2525; Y10T442/2738; Y10T442/2861; Y10T442/291; Y10T442/2918
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1113116A
Cited
US1925282A
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US2159586A
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US2321396A
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US2353027A
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US2871774A
Cited
US3166608A
Cited
US3143422A
Cited
US3205093A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-14 | 1974-06-15 | 1974-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-14 | 1978-06-15 | 1978-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-14 | 1982-06-15 | 1982-12-15 | $7700.00 | Window Closed / Lapsed |