Patent US4219752A successfully refreshed from Google Patents.
Patent US1879204A successfully refreshed from Google Patents.
US1879204A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of ammonium phosphates
Assignee: UCB SA
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Filing: 1929-12-20
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Granted: 1932-09-27
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Expires: 1949-12-20
Abstract
No abstract record available.
Inventors
- 👤 Guillissen Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:10
CPC Classifications
C; C01; C01B; C01B25/00; C01B25/16; C01B25/26; C01B25/28; C01B25/38; C01B25/40; C01B25/405
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1935-09-27 | 1936-03-28 | 1936-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-09-27 | 1940-03-28 | 1940-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-09-27 | 1944-03-28 | 1944-09-27 | $7700.00 | Window Closed / Lapsed |