US3471267A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spherical agglomeration process
Assignee: Canadian Patents and Development Ltd
•
Filing: 1966-01-06
•
Granted: 1969-10-07
•
Expires: 1986-01-06
Abstract
No abstract record available.
Inventors
- 👤 Charles E Capes
- 👤 John P Sutherland
- 👤 Allan E Mcilhinney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:49
CPC Classifications
B; B01; B01J; B01J2/00; B01J2/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1528851A
Cited
US1585755A
Cited
US2544752A
Cited
US2699381A
Cited
US3268071A
Cited
US3306729A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-06 | 1973-04-07 | 1973-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-06 | 1977-04-07 | 1977-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-06 | 1981-04-07 | 1981-10-07 | $7700.00 | Window Closed / Lapsed |