US3440042A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing dispersion hardened metals
Assignee: NIUCLEAR METALS INC A CORP OF MASS
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Filing: 1965-01-28
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Granted: 1969-04-22
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Expires: 1985-01-28
Abstract
No abstract record available.
Inventors
- 👤 Albert R Kaufmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:37
CPC Classifications
C; C22; C22C; C22C1/00; C22C1/10; C22C1/1084; C22C47/00; C22C47/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2921875A
Cited
US3189989A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-21 | 1972-10-21 | 1973-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-21 | 1976-10-21 | 1977-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-21 | 1980-10-21 | 1981-04-22 | $7700.00 | Window Closed / Lapsed |