US2907456A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of materials
Assignee: Akzo Nobel Salt Inc
•
Filing: 1957-05-21
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Granted: 1959-10-06
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Expires: 1977-05-21
Abstract
No abstract record available.
Inventors
- 👤 Robert J Brison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:32
CPC Classifications
B; B03; B03B; B03B1/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
29 words
THE PROCESS OF SEPARATING FRAGMENTS OF DIATHERMANOUS MATERIALS FROM FRAGMENTS OF ATHERMANOUS MATERIALS, COMPRISING THE STEPS OF EXPOSING A MIXTURE OF FRAGMENTS AS AFORESAID TO RADIANT HEAT TO CAUSE
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) | 1962-10-05 | 1963-04-06 | 1963-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-05 | 1967-04-06 | 1967-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-05 | 1971-04-06 | 1971-10-06 | $7700.00 | Window Closed / Lapsed |