US3674444A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Iron scrap bundles
Assignee: Individual
•
Filing: 1966-09-22
•
Granted: 1972-07-04
•
Expires: 1986-09-22
Abstract
Abstract A SCRAP IRON BUNDLE ADAPTED TO BE INTRODUCED INTO A MELTING FURANCE. THE BUNDLE COMPRISES A BODY FORMED FROM A PLURALITY OF IRON SCRAPS COMPACTED TOGETHER, THE BODY HAVING HOLLOWS THEREIN WHICH INCREASE THE AREA OF HEAT TRANSFER AND PROMOTE MELTING OF THE BUNDLE.
Inventors
- 👤 Akemasa Otani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:57
CPC Classifications
C; C22; C22B; C22B1/00; C22B1/14; C22B1/24; C22B1/248; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49751; Y10T29/49753; Y10T428/00; Y10T428/12; Y10T428/12222; Y10T428/12292; Y10T428/12361; Y10T428/12382
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |