US3492218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of micro-crystalline waxes
Assignee: BP PLC
•
Filing: 1967-11-20
•
Granted: 1970-01-27
•
Expires: 1987-11-20
Abstract
No abstract record available.
Inventors
- 👤 Alan Collier
- 👤 Paul Anthony Lawrence
- 👤 Robert James Keir Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:51
CPC Classifications
C; C10; C10G; C10G73/00; C10G73/40; C10G73/42; C10G73/44
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3119762A
Cited
US3214365A
Cited
US3268439A
Cited
US3275545A
Cited
US3190939A
Cited
US3299153A
Cited
US3395096A
Cited
US3365390A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-26 | 1973-07-28 | 1974-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-26 | 1977-07-28 | 1978-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-26 | 1981-07-28 | 1982-01-27 | $7700.00 | Window Closed / Lapsed |