Patent US2838510A successfully refreshed from Google Patents.
US2838510A
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New local anesthesia producing morpholino-alkanol ethers and salts thereof
Assignee: Merck Eprova AG
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Filing: 1955-12-29
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Granted: 1958-06-10
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Expires: 1975-12-29
Abstract
No abstract record available.
Inventors
- 👤 Suter Hans
- 👤 Zutter Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:12
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/08; C07D295/084; C07D295/088; A; A61; A61K; A61K31/00; A61K31/33; A61K31/395; A61K31/535; A61K31/5375; C07D265/00; C07D265/28; C07D265/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
THE NEW GROUP OF LOCALLY ANESTHETIC COMPOUNDS HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
11 words
THE NEW GROUP OF LOCALLY ANESTHETIC COMPOUNDS HAVING THE GENERAL FORMULA
References Cited (Backward Citations)
US2023872A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-09 | 1961-12-09 | 1962-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-09 | 1965-12-09 | 1966-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-09 | 1969-12-09 | 1970-06-10 | $7700.00 | Window Closed / Lapsed |