Patent US3460940A successfully refreshed from Google Patents.
US3460940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing wrought high purity steels by powder metallurgy
Assignee: Individual
•
Filing: 1967-03-09
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Granted: 1969-08-12
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Expires: 1987-03-09
Abstract
No abstract record available.
Inventors
- 👤 Charles Robert Talmage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:07
CPC Classifications
C; C22; C22C; C22C33/00; C22C33/02; C22C33/0235
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2152006A
Cited
US2342799A
Cited
GB618293A
Cited
GB752687A
Cited
US3144329A
Cited
US3334999A
Cited
US3357818A
Cited
US3357826A
Cited
US3341325A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-11 | 1973-02-10 | 1973-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-11 | 1977-02-10 | 1977-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-11 | 1981-02-10 | 1981-08-12 | $7700.00 | Window Closed / Lapsed |