Patent US2015440A successfully refreshed from Google Patents.
US2662020A
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Refractory vitreous ceramic coating material
Assignee: RTX Corp
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Filing: 1950-05-26
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Granted: 1953-12-08
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Expires: 1970-05-26
Abstract
No abstract record available.
Inventors
- 👤 Schofield Henry Zane
- 👤 Loran S O'bannon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:51
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/04; C03C3/062; C03C3/064; C03C10/00; C03C10/0054; C03C3/076; C03C3/089; C03C3/091
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
A FRIT, USED IN MAKING A REFRACTORY VITREOUS CERAMIC COATING MATERIAL CAPABLE OF WITHSTANDING PROLONGED EXPOSURE TO TEMPERATURES IN EXCESS OF 1600* F., COMPRISING FROM 20% TO 50% TITANIA AND THE BALANCE ESSENTIALLY THE CONSTITUENTS OF A CONVENTIONAL GROUND-COAT FRIT OF THE FELDSPARBORAX-QUARTZ TYPE.
Claim 2
Dependent Claim
44 words
A FRIT, USED IN MAKING A REFRACTORY VITREOUS CERAMIC COATING MATERIAL CAPABLE OF WITHSTANDING PROLONGED EXPOSURE TO TEMPERATURES IN EXCESS OF 1600* F., COMPRISING FROM 20% TO 50% TITANIA AND THE BALANCE ESSENTIALLY THE CONSTITUENTS OF A CONVENTIONAL GROUND-COAT FRIT OF THE FELDSPARBORAX-QUARTZ TYPE.
References Cited (Backward Citations)
FR526944A
Cited
GB336797A
Cited
US1925560A
Cited
US2209585A
Cited
DE688787C
Cited
CH218086A
Cited
US2332424A
Cited
US2514855A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-07 | 1957-06-08 | 1957-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-07 | 1961-06-08 | 1961-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-07 | 1965-06-08 | 1965-12-08 | $7700.00 | Window Closed / Lapsed |