US3373134A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions of calcium carbonate, process for the production and uses of the same
Assignee: Toagosei Co Ltd
•
Filing: 1964-08-13
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Granted: 1968-03-12
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Expires: 1984-08-13
Abstract
No abstract record available.
Inventors
- 👤 Yasui Eizo
- 👤 Shoda Shichiro
- 👤 Suzuki Hiroshi
- 👤 Yamada Hiroshi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:24
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/63; D21H17/67; D21H17/675; C; C08; C08K; C08K3/00; C08K3/18; C08K3/24; C08K3/26; C09; C09C; C09C1/00; C09C1/0081; C09C1/0093; C09C1/02; C09C1/021; C01; C01P; C01P2002/00; C01P2002/02; C01P2002/70; C01P2002/72; C01P2004/00; C01P2004/01; C01P2004/03; C01P2004/10; C01P2004/12; C01P2004/30; C01P2004/32; C01P2004/60; C01P2004/61; C01P2004/62
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-12 | 1971-09-11 | 1972-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-12 | 1975-09-11 | 1976-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-12 | 1979-09-11 | 1980-03-12 | $7700.00 | Window Closed / Lapsed |