US3493366A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alloy for service in petrochemical and hydrocarbon processing
Assignee: Huntington Alloys Corp
•
Filing: 1966-11-08
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Granted: 1970-02-03
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Expires: 1986-11-08
Abstract
No abstract record available.
Inventors
- 👤 David John Hopkins
- 👤 Carol Henry White
- 👤 John Woolridge Eggar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:15
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/02; C01B3/32; C01B3/34; C01B3/38; C01B3/384; C22; C22C; C22C19/00; C22C19/03; C22C19/05; C22C19/051; C22C19/053; F; F28; F28F; F28F21/00; F28F21/08; F28F21/081; F28F21/087; F28D; F28D21/00; F28D2021/0019; F28D2021/0059
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2247643A
Cited
US2403128A
Cited
US2553330A
Cited
US2763543A
Cited
US2873187A
Cited
US3046108A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-02 | 1973-08-04 | 1974-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-02 | 1977-08-04 | 1978-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-02 | 1981-08-04 | 1982-02-03 | $7700.00 | Window Closed / Lapsed |