US3433863A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of granular calcium chloride
Assignee: Wyandotte Chemicals Corp
•
Filing: 1967-07-17
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Granted: 1969-03-18
•
Expires: 1987-07-17
Abstract
No abstract record available.
Inventors
- 👤 John H Bowden
- 👤 Clifford T Terry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:52
CPC Classifications
C; C01; C01F; C01F11/00; C01F11/20; C01F11/24; C01F11/30; C09; C09K; C09K3/00; C09K3/18; C09K3/185
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2018633A
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US2646343A
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US2882126A
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US2857244A
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US2988509A
Cited
US3071816A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-17 | 1972-09-16 | 1973-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-17 | 1976-09-16 | 1977-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-17 | 1980-09-16 | 1981-03-18 | $7700.00 | Window Closed / Lapsed |