Patent US3538231A successfully refreshed from Google Patents.
US3538231A
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US
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Oxidation resistant high temperature structures
Assignee: INTERN MATERIALS
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Filing: 1969-03-25
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Granted: 1970-11-03
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Expires: 1989-03-25
Abstract
No abstract record available.
Inventors
- 👤 Terry F Newkirk
- 👤 Marc S Newkirk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:20
CPC Classifications
H; H01; H01B; H01B1/00; H05; H05B; H05B3/00; H05B3/02; H05B3/06; H05B3/10; H05B3/12; H05B3/62; H05B3/64; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/926; Y10S428/9335; Y10S428/937; Y10S428/939; Y10T; Y10T428/00; Y10T428/12; Y10T428/12229; Y10T428/12271; Y10T428/12278; Y10T428/12493; Y10T428/12535; Y10T428/12625; Y10T428/12708; Y10T428/12736; Y10T428/12743
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3044156A
Cited
US3328201A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-02 | 1974-05-04 | 1974-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-02 | 1978-05-04 | 1978-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-02 | 1982-05-04 | 1982-11-03 | $7700.00 | Window Closed / Lapsed |