US2614050A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refractory compositions
Assignee: Basic Refractories Inc
•
Filing: 1947-01-13
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Granted: 1952-10-14
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Expires: 1967-01-13
Abstract
No abstract record available.
Inventors
- 👤 Rusoff Samuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:10
CPC Classifications
C; C04; C04B; C04B33/00; C04B33/02; C04B33/13; C04B33/1305
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
37 words
A REFRACTORY, COMPRISING MAGNESIA PARTICLES AND NOT OVER ABOUT TEN PER CENT OF SODIUM SILICATE, TEMPERED WITH WATER CONTAINING AN ALKALI METAL SALT OF A POLYMERIZED ARYL-ALKYL SULPHONIC ACID IN AMOUNT NOT OVER ABOUT THREE PER CENT.
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) | 1955-10-14 | 1956-04-14 | 1956-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-14 | 1960-04-14 | 1960-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-14 | 1964-04-14 | 1964-10-14 | $7700.00 | Window Closed / Lapsed |