US2849305A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric furnace product
Assignee: NL Industries Inc
•
Filing: 1954-08-30
•
Granted: 1958-08-26
•
Expires: 1974-08-30
Abstract
No abstract record available.
Inventors
- 👤 Leon J Frost
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:50
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/14; C09K3/1409; C09K3/1427; C04; C04B; C04B35/00; C04B35/01; C04B35/10; C04B35/107
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
39 words
A FUSED ABRASIVE MATERIAL WHICH CONSISTS ESSENTIALLY OF FINE CRYSTALS OF TITANIUM CARBIDE DISPERSED IN A MATRIX, SAID MATRIX CONSISTING ESSENTIALLY OF CRYSTALLINE ALPHA ALUMINA, SAID CARBILDE BEING PRESENT IN AN AMOUNT FROM ABOUT 10% TO 50% BY WEIGHT.
References Cited (Backward Citations)
US2360841A
Cited
US2198372A
Cited
US2285837A
Cited
US2378399A
Cited
US2424645A
Cited
US2418496A
Cited
US2475565A
Cited
US2602714A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-25 | 1962-02-24 | 1962-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-25 | 1966-02-24 | 1966-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-25 | 1970-02-24 | 1970-08-26 | $7700.00 | Window Closed / Lapsed |