US3470070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flashing viscous polymer solutions
Assignee: Phillips Petroleum Co
•
Filing: 1966-12-06
•
Granted: 1969-09-30
•
Expires: 1986-12-06
Abstract
No abstract record available.
Inventors
- 👤 Robert D Heckart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:46
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/06; C; C08; C08C; C08C19/00; C08C19/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2953557A
Cited
US2964516A
Cited
US3356662A
Cited
US2367862A
Cited
US2593931A
Cited
US2786047A
Cited
US2744939A
Cited
US2964513A
Cited
US2994644A
Cited
US3036057A
Cited
US3320220A
Cited
US3330875A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-29 | 1973-03-31 | 1973-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-29 | 1977-03-31 | 1977-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-29 | 1981-03-31 | 1981-09-30 | $7700.00 | Window Closed / Lapsed |