US2993847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum treating process
Assignee: Unisys Corp
•
Filing: 1958-04-04
•
Granted: 1961-07-25
•
Expires: 1978-04-04
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Poch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:11
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/05; C23C22/06; C23C22/24; C25; C25D; C25D11/00; C25D11/02; C25D11/022; C25D11/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2604418A
Cited
US2506164A
Cited
GB661273A
Cited
GB735819A
Cited
US2764537A
Cited
US2812295A
Cited
US2885273A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-24 | 1965-01-23 | 1965-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-24 | 1969-01-23 | 1969-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-24 | 1973-01-23 | 1973-07-25 | $7700.00 | Window Closed / Lapsed |