US3402080A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High tensile strength steel alloys
Assignee: JFE Engineering Corp
•
Filing: 1966-03-24
•
Granted: 1968-09-17
•
Expires: 1986-03-24
Abstract
No abstract record available.
Inventors
- 👤 Kubota Hiroyuki
- 👤 Tanaka Junichi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:02
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; C22C38/38; C22C38/04; C22C38/20; C22C38/24
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-17 | 1972-03-18 | 1972-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-17 | 1976-03-18 | 1976-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-17 | 1980-03-18 | 1980-09-17 | $7700.00 | Window Closed / Lapsed |