US3467495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of calcium phosphates
Assignee: International Minerals and Chemical Corp
•
Filing: 1965-12-23
•
Granted: 1969-09-16
•
Expires: 1985-12-23
Abstract
No abstract record available.
Inventors
- 👤 Francis T Nielsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:19
CPC Classifications
C; C01; C01B; C01B25/00; C01B25/16; C01B25/26; C01B25/32; C01B25/322
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1924137A
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US2021671A
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US2067538A
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US2108940A
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US2062064A
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US2121208A
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US2208175A
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US2271361A
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US2948590A
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FR1360912A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-15 | 1973-03-17 | 1973-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-15 | 1977-03-17 | 1977-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-15 | 1981-03-17 | 1981-09-16 | $7700.00 | Window Closed / Lapsed |