US2770860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Casting readily oxidizable alloys
Assignee: Motors Liquidation Co
•
Filing: 1952-07-23
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Granted: 1956-11-20
•
Expires: 1972-07-23
Abstract
No abstract record available.
Inventors
- 👤 Fred J Webbere
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:33
CPC Classifications
B; B22; B22D; B22D18/00; B22D18/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
56 words
A METHOD OF TREATING A NICKEL BASE ALLOY CONTAINING TITANIUM AND ALUMINUM DURING POURING OPERATIONS SO AS TO PREVENT THE FORMATION AND OCCLUSION OF TITANIUM AND ALUMINUM NITRIDE AND OXIDE FILMS, SAID METHOD COMPRISING MELTING SAID NICKEL BASE ALLOY AND POURING IT IN AN ATMOSPHERE CONSISTING ESSENTIALLY OF A MIXTURE OF AN INERT GAS AND DICHLORODIFLUOROMETHANE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-20 | 1960-05-21 | 1960-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-20 | 1964-05-21 | 1964-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-20 | 1968-05-21 | 1968-11-20 | $7700.00 | Window Closed / Lapsed |