US2757105A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceramic coating for compressor blades, coated blades and method of making same
Assignee: General Electric Co
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Filing: 1955-02-28
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Granted: 1956-07-31
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Expires: 1975-02-28
Abstract
No abstract record available.
Inventors
- 👤 Jack H Terry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:33
CPC Classifications
C; C03; C03C; C03C4/00; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/264
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
133 words
THE METHOD OF APPLYING FIRED ENAMEL COATINGS TO BLADES FOR COMPRESSORS OR THE LIKE, COMPRISING THE STEPS OF CLEANING THE BLADES, APPLYING A COATING OF ENAMEL SLIP TO SAID BLADE, AND FIRING THE COATED BLADE AT AN ELEVATED TEMPERATURE IN A REDUCING ATMOSPHERE TO PRODUCE A CERAMIC COATED BLADE; SAID ENAMEL SLIP COMPRISING BY WEIGHT ABOUT 40 TO 70 PARTS OF A FRIT HAVING A HIGH BARIUM OXIDE CONTENT OF FROM ABOUT 30% TO ABOUT 40% BY WEIGHT, ABOUT 10 TO 40 PARTS OF A FRIT HAVING A HIGH COBALT OXIDE CONTENT OF FROM ABOUT 0.5% TO ABOUT 3.0% BY WEIGHT ABOUT 10 TO 40 PARTS BY WEIGHT OF REFRACTORY MATERIAL, ABOUT 0.25 TO 5 PARTS NICKEL OXIDE, ABOUT 0.25 TO 5 PARTS COBALT OXIDE, AND ABOUT 3 TO 8 PARTS SUSPENSION AGENT.
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) | 1959-07-31 | 1960-01-30 | 1960-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-31 | 1964-01-30 | 1964-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-31 | 1968-01-30 | 1968-07-31 | $7700.00 | Window Closed / Lapsed |