Patent US3575734A successfully refreshed from Google Patents.
US3575734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making nickel base precipitation hardenable alloys
Assignee: Carpenter Technology Corp
•
Filing: 1968-07-26
•
Granted: 1971-04-20
•
Expires: 1988-07-26
Abstract
Abstract A PROCESS FOR MAKING NICKEL BASE PRECIPITATION HARDENABLE ALLOYS, AND ALLOYS MADE THEREBY, WHICH INCLUDES TREATING THE METAL WHILE IN A MOLTEN STATE UNDER VACUUM OR AN INERT GAS AT LOW PRESSURE WITH A REACTIVE ELEMENT SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM, CALCIUM, NEODYMIUM, AND THE RARE EARTH ELEMENTS HAVING A MELTING POINT GREATER THAN NEODYMIUM.
Inventors
- 👤 Donald R Muzyka
- 👤 Clyde Raymond Whitney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:26
CPC Classifications
C; C22; C22C; C22C1/00; C22C1/02; C22C1/023; C22C19/00; C22C19/03; C22C19/05; C22C19/051; C22C19/055; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4998; Y10T29/49988
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) | 1974-04-19 | 1974-10-19 | 1975-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-19 | 1978-10-19 | 1979-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-19 | 1982-10-19 | 1983-04-20 | $7700.00 | Window Closed / Lapsed |