Patent US3565842A successfully refreshed from Google Patents.
US3565842A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rubber-asphalt emulsions
Assignee: Phillips Petroleum Co
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Filing: 1968-06-12
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Granted: 1971-02-23
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Expires: 1988-06-12
Abstract
Abstract A STABLE CATIONIC RUBBER-ASPHALT EMULSION IS MADE BY BLENDING A RUBBERY BLOCK COPOLYMER OF AT LEAST ONE CONJUGATED DIENE AND AT LEAST ONE MONOVINYL OR DIVINYL AROMATIC COMPOUND WITH ASPHALT, WATER AND AN EMULSIFYING AMOUNT OF A CATIONIC EMULSIFYING AGENT.
Inventors
- 👤 Armin C Pitchford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:55
CPC Classifications
C; C08; C08L; C08L95/00; C08L95/005; C08J; C08J3/00; C08J3/005; C08L53/00; C08L53/02
Claims Analysis
Total Claims: 0
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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) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |