Patent DE305473C successfully refreshed from Google Patents.
US3433632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing porous metal bodies
Assignee: Union Carbide Corp
•
Filing: 1967-06-30
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Granted: 1969-03-18
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Expires: 1987-06-30
Abstract
No abstract record available.
Inventors
- 👤 Raymond J Elbert
- 👤 Ernest G Farrier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:32
CPC Classifications
B; B22; B22F; B22F5/00; B22F5/006; B22F3/00; B22F3/10; B22F3/11; B22F3/1103; B22F7/00; B22F7/002; F; F28; F28F; F28F13/00; F28F13/18; B22F2998/00; F28F2255/00; F28F2255/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-17 | 1972-09-16 | 1973-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-17 | 1976-09-16 | 1977-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-17 | 1980-09-16 | 1981-03-18 | $7700.00 | Window Closed / Lapsed |