Patent US3829321A successfully refreshed from Google Patents.
US3829321A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stable asphalt-polyolefin emulsions
Assignee: Phillips Petroleum Co
•
Filing: 1972-04-03
•
Granted: 1974-08-13
•
Expires: 1992-04-03
Abstract
Abstract STABLE OIL-IN-WATER EMULSIONS CONTAINING ASPHALT AND A POLYOLEFINS ARE PREPARED USING ACIDIFIED KAOLIN CLAYS, WHICH EMULSIONS AFTER CURING RESULT IN FLEXIBLE PRODUCTS USEFUL AS ROOFING CEMENT, POND LINERS, SEALANTS, AND THE LIKE. IF DESIRED, THE EMULSIONS CAN ALSO COMPRISE N,N-DIMETHYLSULFENYL DITHIOCARBAMATES WHICH ARE EFFECTIVE AS RODENT REPELLENTS.
Inventors
- 👤 G Woodruff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:19
CPC Classifications
C; C08; C08L; C08L95/00; C08L95/005
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |