US1915334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluosilicate of organic heterocyclic bases and process of making it
Assignee: EIDP Inc
•
Filing: 1930-10-16
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Granted: 1933-06-27
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Expires: 1950-10-16
Abstract
No abstract record available.
Inventors
- 👤 Salzberg Paul Lawrence
- 👤 Bousquet Euclid Wilfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:38
CPC Classifications
C; C07; C07D; C07D215/00; C07D215/02; C07D215/04; C07D213/00; C07D213/02; C07D213/04; C07D213/06; C07D213/16; C07D213/18; C07D277/00; C07D277/02; C07D277/20; C07D277/32; C07D277/38; C07D277/42; C07D295/00; C07D295/02; C07D295/027; C07D401/00; C07D401/02; C07D401/04
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) | 1936-06-26 | 1936-12-26 | 1937-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-06-26 | 1940-12-26 | 1941-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-06-26 | 1944-12-26 | 1945-06-27 | $7700.00 | Window Closed / Lapsed |