Patent US3551332A successfully refreshed from Google Patents.
US3551332A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purification of fluorine-containing industrial waste waters
Assignee: International Minerals and Chemical Corp
•
Filing: 1969-06-16
•
Granted: 1970-12-29
•
Expires: 1989-06-16
Abstract
No abstract record available.
Inventors
- 👤 Arthur N Baumann
- 👤 Richard E Bird
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:20
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/58; C02F1/583; C01; C01F; C01F11/00; C01F11/20; C01F11/22; C02F1/52; C02F1/5236; C02F1/66; C02F2101/00; C02F2101/10; C02F2101/12; C02F2101/14; C02F2209/00; C02F2209/02; C02F2209/06; Y; Y10; Y10S; Y10S210/00; Y10S210/902; Y10S210/915
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-28 | 1974-06-29 | 1974-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-28 | 1978-06-29 | 1978-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-28 | 1982-06-29 | 1982-12-29 | $7700.00 | Window Closed / Lapsed |