US3522338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for hot briquetting calcium phosphate ore
Assignee: FMC Corp
•
Filing: 1968-05-31
•
Granted: 1970-07-28
•
Expires: 1988-05-31
Abstract
No abstract record available.
Inventors
- 👤 Theodore E Kass
- 👤 Robert J Gleason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:13
CPC Classifications
C; C01; C01B; C01B25/00; C01B25/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA481706A
Cited
US2029309A
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US2776828A
Cited
US3032408A
Cited
US3076248A
Cited
US3189433A
Cited
GB1064196A
Cited
US3387923A
Cited
US3324221A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-27 | 1974-01-26 | 1974-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-27 | 1978-01-26 | 1978-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-27 | 1982-01-26 | 1982-07-28 | $7700.00 | Window Closed / Lapsed |