Patent US2659756A successfully refreshed from Google Patents.
US2659756A
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Diammonium salts
Assignee: Novartis AG
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Filing: 1952-06-30
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Granted: 1953-11-17
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Expires: 1972-06-30
Abstract
No abstract record available.
Inventors
- 👤 Hafliger Franz
- 👤 Girod Emil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:36
CPC Classifications
C; C07; C07C; C07C323/00; C07C323/22; A; A01; A01N; A01N33/00; A01N33/02; A01N33/12; A61; A61K; A61K31/00; A61K31/13; A61K31/14; A61P; A61P23/00; C07C211/00; C07C211/62; C07C211/63; C11; C11D; C11D1/00; C11D1/38; C11D1/62
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
24 words
THE DIMETHO - IODIDE OF 1 - (U - DIMETHYLAMINO - PROPOXY) - 4 - (Y - DIMETHYLAMINO PROPYLMERCAPTO) - BENZENE OF THE FORMULA:
References Cited (Backward Citations)
US2087131A
Cited
US2544076A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-16 | 1957-05-18 | 1957-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-16 | 1961-05-18 | 1961-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-16 | 1965-05-18 | 1965-11-17 | $7700.00 | Window Closed / Lapsed |