US2628898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alloy addition agent
Assignee: Union Carbide Corp
•
Filing: 1951-11-03
•
Granted: 1953-02-17
•
Expires: 1971-11-03
Abstract
No abstract record available.
Inventors
- 👤 Donald C Hilty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:12
CPC Classifications
C; C22; C22C; C22C33/00; C22C33/003; C22B; C22B5/00; C22B5/02; C22B5/04; C22B5/06; Y; Y10; Y10S; Y10S149/00; Y10S149/11; Y10S149/114
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
AN EXOTHERMIC MIXTURE CONSISTING OF SILICON, POTASSIUM PERCHLORATE, AND SODA ASH, SAID SILICON BEING PRESENT IN AN AMOUNT EQUAL TO AT LEAST 15% OF SAID MIXTURE, THE PROPORTIONS OF SILICON AND POTASSIUM PERCHLORATE IN SAID MIXTURE BEING SUCH THAT THE ATOMIC RATION OF SILICON TO THE OXYGEN IN THE POTASSIUM PERCHLORATE IS AT LEAST 0.5, SAID SODA ASH BEING PRESENT IN AN AMOUNT EQUAL TO AT LEAST 2% OF THE COMBINED WEIGHTS OF SILICON AND POTASSIUM PERCHLORATE THE REMAINDER BEING SUBSTANTIALLY ALL IRON AND INCIDENTAL IMPURITIES.
Claim 2
Dependent Claim
86 words
AN EXOTHERMIC MIXTURE CONSISTING OF SILICON, POTASSIUM PERCHLORATE, AND SODA ASH, SAID SILICON BEING PRESENT IN AN AMOUNT EQUAL TO AT LEAST 15% OF SAID MIXTURE, THE PROPORTIONS OF SILICON AND POTASSIUM PERCHLORATE IN SAID MIXTURE BEING SUCH THAT THE ATOMIC RATION OF SILICON TO THE OXYGEN IN THE POTASSIUM PERCHLORATE IS AT LEAST 0.5, SAID SODA ASH BEING PRESENT IN AN AMOUNT EQUAL TO AT LEAST 2% OF THE COMBINED WEIGHTS OF SILICON AND POTASSIUM PERCHLORATE THE REMAINDER BEING SUBSTANTIALLY ALL IRON AND INCIDENTAL IMPURITIES.
References Cited (Backward Citations)
US2280873A
Cited
GB581888A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-02-17 | 1956-08-18 | 1957-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-17 | 1960-08-18 | 1961-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-17 | 1964-08-18 | 1965-02-17 | $7700.00 | Window Closed / Lapsed |