US3518174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for purification of water containing organic contaminants
Assignee: Individual
•
Filing: 1967-08-10
•
Granted: 1970-06-30
•
Expires: 1987-08-10
Abstract
No abstract record available.
Inventors
- 👤 Kiyoshi Inoue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:45
CPC Classifications
D; D06; D06F; D06F35/00; D06F35/003; A; A47; A47L; A47L15/00; A47L15/42; C; C02; C02F; C02F1/00; C02F1/46; C02F1/461; C02F1/46104; C02F1/463; C02F1/42; C02F1/46109; C02F2001/46133; C02F2101/00; C02F2101/30; C02F2103/00; C02F2103/42; C02F2201/00; C02F2201/46; C02F2201/461; C02F2201/46105; C02F2201/4612; C02F2201/46125; C02F2201/4613; C02F2201/46145; C02F2201/4615; C02F2201/4616; C02F2201/46165; C02F2201/4618; C02F2201/4619; C02F2209/00; C02F2209/05; C02F2301/00; C02F2301/08
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US961924A
Cited
US2046467A
Cited
US1956411A
Cited
US2221997A
Cited
US2621671A
Cited
US3067123A
Cited
US3208925A
Cited
US3414497A
Cited
US3248309A
Cited
US3222269A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-29 | 1973-12-29 | 1974-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-29 | 1977-12-29 | 1978-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-29 | 1981-12-29 | 1982-06-30 | $7700.00 | Window Closed / Lapsed |