US2911311A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Calcium aluminate binder
Assignee: Howmet Turbine Components Corp
•
Filing: 1955-08-08
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Granted: 1959-11-03
•
Expires: 1975-08-08
Abstract
No abstract record available.
Inventors
- 👤 Roy C Feagin
- 👤 Robert B Sosman
- 👤 Robert A Horton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:42
CPC Classifications
C; C04; C04B; C04B7/00; C04B7/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
AN INVESTMENT COMPOSITION CONSISTING ESSENTIALLY OF ABOUT 3 TO 35% BY WEIGHT OF CALCIUM ALUMINATE AS A BINDER, SAID CALCIUM ALUMINATE COMPRISING ABOUT 15 TO 49% BY WEIGHT OF CALCIUM OXIDE, AND A REFRACTORY MATERIAL SELECTED FROM THE GROUP CONSISTING OF (A) PERICLASE AND ZIRCON, (B) PERICLASE AND SILICA, AND (C) KYANITE WHEREIN (A) IS 3 TO 75% PERICLASE AND 5 TO 75% ZIRCON, BY WEIGHT OF THE COMPOSITION, AND (B) IS 7 TO 92% PERICLASE AND 5 TO 20% SILICA, BY WEIGHT OF THE COMPOSITION.
Claim 2
Dependent Claim
86 words
AN INVESTMENT COMPOSITION CONSISTING ESSENTIALLY OF ABOUT 3 TO 35% BY WEIGHT OF CALCIUM ALUMINATE AS A BINDER, SAID CALCIUM ALUMINATE COMPRISING ABOUT 15 TO 49% BY WEIGHT OF CALCIUM OXIDE, AND A REFRACTORY MATERIAL SELECTED FROM THE GROUP CONSISTING OF (A) PERICLASE AND ZIRCON, (B) PERICLASE AND SILICA, AND (C) KYANITE WHEREIN (A) IS 3 TO 75% PERICLASE AND 5 TO 75% ZIRCON, BY WEIGHT OF THE COMPOSITION, AND (B) IS 7 TO 92% PERICLASE AND 5 TO 20% SILICA, BY WEIGHT OF THE COMPOSITION.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-02 | 1963-05-04 | 1963-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-02 | 1967-05-04 | 1967-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-02 | 1971-05-04 | 1971-11-03 | $7700.00 | Window Closed / Lapsed |