Patent US3417678A successfully refreshed from Google Patents.
US3417678A
Expired / Lapsed
US
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Bituminous resinous compositions for construction purposes
Assignee: Shell USA Inc
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Filing: 1965-01-21
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Granted: 1968-12-24
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Expires: 1985-01-21
Abstract
No abstract record available.
Inventors
- 👤 Johannes W Ewers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:58
CPC Classifications
C; C08; C08L; C08L63/00; C08G; C08G59/00; C08G59/14; C08G59/1433; C08G59/1438; C08G59/145; C08G59/18; C08G59/40; C08G59/44; C08G59/50; C08G59/54; C08L95/00; C09; C09D; C09D163/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-24 | 1972-06-24 | 1972-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-24 | 1976-06-24 | 1976-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-24 | 1980-06-24 | 1980-12-24 | $7700.00 | Window Closed / Lapsed |