US3539472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for molding articles from metal powders
Assignee: Hoechst AG
•
Filing: 1967-12-21
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Granted: 1970-11-10
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Expires: 1987-12-21
Abstract
No abstract record available.
Inventors
- 👤 Gerhard Findeisen
- 👤 Walter Brotz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:17
CPC Classifications
B; B22; B22F; B22F3/00; B22F3/02; B22F1/00; B22F1/10; C; C10; C10M; C10M7/00; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/022; C10M2207/04; C10M2207/046; C10M2215/00; C10M2215/08; C10M2215/082; C10M2215/24; C10M2215/28; C10N; C10N2050/00; C10N2050/015; C10N2050/02; C10N2050/08; C10N2050/10; C10N2070/00; Y; Y10; Y10S; Y10S521/00; Y10S521/919
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) | 1973-11-09 | 1974-05-11 | 1974-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-09 | 1978-05-11 | 1978-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-09 | 1982-05-11 | 1982-11-10 | $7700.00 | Window Closed / Lapsed |