US2563859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Addition agent
Assignee: Huntington Alloys Corp
•
Filing: 1949-08-03
•
Granted: 1951-08-14
•
Expires: 1969-08-03
Abstract
No abstract record available.
Inventors
- 👤 Millis Keith Dwight
- 👤 Gagnebin Albert Paul
- 👤 Pilling Norman Boden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:56
CPC Classifications
C; C22; C22C; C22C35/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
AS A NEW ARTICLE OF MANUFACTURE, AN ADDITION AGENT ADAPTED FOR THE TREATMENT OF CAST IRON BATHS TO DESULFURIZE SAID BATHS AND TO IMPROVE THE QUALITY OF CASTINGS MADE THEREFROM, AND COMPRISING AN ALLOY CONTAINING ABOUT 18% MAGNESIUM, ABOUT 28% SILICON, UP TO ABOUT 8, IRON, AND THE BALANCE ESSENTIALLY NICKEL.
Claim 2
Dependent Claim
51 words
AS A NEW ARTICLE OF MANUFACTURE, AN ADDITION AGENT ADAPTED FOR THE TREATMENT OF CAST IRON BATHS TO DESULFURIZE SAID BATHS AND TO IMPROVE THE QUALITY OF CASTINGS MADE THEREFROM, AND COMPRISING AN ALLOY CONTAINING ABOUT 18% MAGNESIUM, ABOUT 28% SILICON, UP TO ABOUT 8, IRON, AND THE BALANCE ESSENTIALLY NICKEL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-13 | 1955-02-12 | 1955-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-13 | 1959-02-12 | 1959-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-13 | 1963-02-12 | 1963-08-14 | $7700.00 | Window Closed / Lapsed |