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US3404949A
Expired / Lapsed
US
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Process for the production of ammonium sulfamate
Assignee: National Institute of Advanced Industrial Science and Technology
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Filing: 1964-11-13
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Granted: 1968-10-08
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Expires: 1984-11-13
Abstract
No abstract record available.
Inventors
- 👤 Ito Yukio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:10
CPC Classifications
C; C01; C01B; C01B21/00; C01B21/082; C01B21/087; C01B21/093; C01B21/0935; C01B21/092; C01B21/0923; C01B21/096
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2323241A
Cited
US2426420A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-08 | 1972-04-08 | 1972-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-08 | 1976-04-08 | 1976-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-08 | 1980-04-08 | 1980-10-08 | $7700.00 | Window Closed / Lapsed |