US3303034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic refractory
Assignee: Individual
•
Filing: 1966-01-21
•
Granted: 1967-02-07
•
Expires: 1986-01-21
Abstract
No abstract record available.
Inventors
- 👤 Peter T Troell
- 👤 George L Winchester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:58
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/622; C04B35/626; C04B35/63; C04B35/6303; C04B35/6306; C04B35/66; C04B2111/00; C04B2111/00034; C04B2111/00086; C04B2235/00; C04B2235/02; C04B2235/30; C04B2235/32; C04B2235/3217; C04B2235/34; C04B2235/3427; C04B2235/3463
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A CONSOLIDATED, PLASTIC-REFRACTORY-SIZE-GRADED RAMMING MIXTURE THAT IS SUITABLE FOR INSTALLATION BY RAMMING TECHNIQUES AFTER STORAGE PERIODS OF UP TO SIX MONTHS CONSISTING ESSENTIALLY OF, BY WEIGHT, FROM 1 TO 10% F BENTONITE CONTAINING ABOUT 2 TO 3% NA2O, UP TO 15% CALCINED ALUMINA, AND THE BALANCE A CALCINED ALUMINOUS MATERIAL SELECTED FROM THE GROUP CONSISTING OF TABULAR ALUMINA, BAUXITE, KYANITE, AND DIASPORE, FROM 15 TO 40% OF THE TOTAL ALUMINOUS MATERIAL AND CALCINED ALUMINA BEING SIZED TO PASS A 325 MESH SCREEN, SAID MIXTURE BEING TREATED WITH A TEMPERING AGENT AND PHOSPHORIC ACID IN AN AMOUNT TO PROVIDE P2O5 EQUIVALENT TO THAT PROVIDED BY ABOUT 2 TO 15%, BY WEIGHT, OF 85% PHOSPHORIC ACID, FRM 40-60% OF THE BATCH BEING + 28 MESH.
Claim 2
Dependent Claim
123 words
A CONSOLIDATED, PLASTIC-REFRACTORY-SIZE-GRADED RAMMING MIXTURE THAT IS SUITABLE FOR INSTALLATION BY RAMMING TECHNIQUES AFTER STORAGE PERIODS OF UP TO SIX MONTHS CONSISTING ESSENTIALLY OF, BY WEIGHT, FROM 1 TO 10% F BENTONITE CONTAINING ABOUT 2 TO 3% NA2O, UP TO 15% CALCINED ALUMINA, AND THE BALANCE A CALCINED ALUMINOUS MATERIAL SELECTED FROM THE GROUP CONSISTING OF TABULAR ALUMINA, BAUXITE, KYANITE, AND DIASPORE, FROM 15 TO 40% OF THE TOTAL ALUMINOUS MATERIAL AND CALCINED ALUMINA BEING SIZED TO PASS A 325 MESH SCREEN, SAID MIXTURE BEING TREATED WITH A TEMPERING AGENT AND PHOSPHORIC ACID IN AN AMOUNT TO PROVIDE P2O5 EQUIVALENT TO THAT PROVIDED BY ABOUT 2 TO 15%, BY WEIGHT, OF 85% PHOSPHORIC ACID, FRM 40-60% OF THE BATCH BEING + 28 MESH.
References Cited (Backward Citations)
US3179526A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |