US2640860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for melting titanium to form ingots
Assignee: Allegheny Ludlum Steel Corp
•
Filing: 1949-10-21
•
Granted: 1953-06-02
•
Expires: 1969-10-21
Abstract
No abstract record available.
Inventors
- 👤 Schuyler A Herres
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:31
CPC Classifications
C; C22; C22B; C22B34/00; C22B34/10; C22B34/12; C22B34/1295; F; F27; F27B; F27B5/00; F27B5/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US559731A
Cited
US623075A
Cited
US1491964A
Cited
US1807090A
Cited
US2060074A
Cited
US2019727A
Cited
US2140607A
Cited
US2117913A
Cited
US2121280A
Cited
US2143987A
Cited
US2148391A
Cited
US2205854A
Cited
US2163967A
Cited
US2264287A
Cited
US2356338A
Cited
US2445670A
Cited
US2477258A
Cited
US2433032A
Cited
US2541764A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-01 | 1956-12-01 | 1957-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-01 | 1960-12-01 | 1961-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-01 | 1964-12-01 | 1965-06-02 | $7700.00 | Window Closed / Lapsed |