Patent US5164858A successfully refreshed from Google Patents.
Patent US3435592A successfully refreshed from Google Patents.
US3435592A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for the purification of the gases generated in the chlorinating treatment of aluminous melts
Assignee: Krebs & Co Ltd
•
Filing: 1966-07-28
•
Granted: 1969-04-01
•
Expires: 1986-07-28
Abstract
No abstract record available.
Inventors
- 👤 Ernst E Lindenmaier
- 👤 Edgar Jackel
- 👤 Ludwig G Mathys
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:11
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/68; C; C22; C22B; C22B21/00; C22B21/06; C22B21/064; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2718279A
Cited
US3078145A
Cited
US3073092A
Cited
US3257777A
Cited
US3152864A
Cited
US3284992A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-31 | 1972-09-30 | 1973-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-31 | 1976-09-30 | 1977-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-31 | 1980-09-30 | 1981-04-01 | $7700.00 | Window Closed / Lapsed |