Patent US3487016A successfully refreshed from Google Patents.
US3487016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of purifying waste water by catalytic oxidation
Assignee: Arde Inc
•
Filing: 1967-07-14
•
Granted: 1969-12-30
•
Expires: 1987-07-14
Abstract
No abstract record available.
Inventors
- 👤 Jack D Zeff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:58
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/72; C02F1/725; Y; Y10; Y10S; Y10S210/00; Y10S210/902; Y10S210/911
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
CA596536A
Cited
US3127243A
Cited
US1602404A
Cited
US2132592A
Cited
US2468865A
Cited
US2690425A
Cited
US3054653A
Cited
US3142638A
Cited
US3133016A
Cited
US3337452A
Cited
US3222277A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-29 | 1973-06-30 | 1973-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-29 | 1977-06-30 | 1977-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-29 | 1981-06-30 | 1981-12-30 | $7700.00 | Window Closed / Lapsed |