US3547814A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bio-oxidation with low sludge yield
Assignee: Linde GmbH
•
Filing: 1969-07-02
•
Granted: 1970-12-15
•
Expires: 1989-07-02
Abstract
No abstract record available.
Inventors
- 👤 John R Mcwhirter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:32
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/12; C02F3/1205; C02F3/1221; C02F3/20; C02F3/205; C02F3/207; C02F3/26; Y; Y02; Y02W; Y02W10/00; Y02W10/10; Y02W10/30; Y02W10/33
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1286017A
Cited
GB415775A
Cited
US2324593A
Cited
US2380465A
Cited
US2666740A
Cited
US3054602A
Cited
US3151063A
Cited
US3412017A
Cited
US3355023A
Cited
US3342727A
Cited
US3356609A
Cited
US3401113A
Cited
US3462275A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-14 | 1974-06-15 | 1974-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-14 | 1978-06-15 | 1978-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-14 | 1982-06-15 | 1982-12-15 | $7700.00 | Window Closed / Lapsed |