US3492102A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refractory metal articles protected from atmospheric contamination at elevated temperatures by surface coatings
Assignee: RTX Corp
•
Filing: 1966-03-16
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Granted: 1970-01-27
•
Expires: 1986-03-16
Abstract
No abstract record available.
Inventors
- 👤 Norman S Bornstein
- 👤 Leonard A Friedrich
- 👤 Emanuel C Hirakis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:47
CPC Classifications
B; B22; B22F; B22F7/00; B22F7/02; B22F7/04; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12674; Y10T428/12681; Y10T428/12708; Y10T428/12736; Y10T428/12771; Y10T428/12806; Y10T428/12812; Y10T428/12819; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2690409A
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US2665475A
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US2763920A
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US3037880A
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US2994124A
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US3078554A
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US3249462A
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US3307964A
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US3337363A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-26 | 1973-07-28 | 1974-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-26 | 1977-07-28 | 1978-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-26 | 1981-07-28 | 1982-01-27 | $7700.00 | Window Closed / Lapsed |