US2813104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of mephenesin carbamate hemihydrate
Assignee: Olin Corp
•
Filing: 1954-11-02
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Granted: 1957-11-12
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Expires: 1974-11-02
Abstract
No abstract record available.
Inventors
- 👤 Wilbur B Mcdowell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:14
CPC Classifications
C; C07; C07D; C07D317/00; C07D317/08; C07D317/10; C07D317/32; C07D317/34; C07D317/36
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
18 words
THE PROCESS FOR PREPARING MEPHENESIN CARBAMATE HEMIHYDRATE, WHICH COMPRISES REACTING MEPHENESIN CARBONATE WITH AMMONIA IN AN AQUEOUS SYSTEM.
Claim 2
Dependent Claim
18 words
THE PROCESS FOR PREPARING MEPHENESIN CARBAMATE HEMIHYDRATE, WHICH COMPRISES REACTING MEPHENESIN CARBONATE WITH AMMONIA IN AN AQUEOUS SYSTEM.
Claim 3
Dependent Claim
3 words
MEPHENESIN CARBAMATE HEMIHYDRATE.
Claim 4
Dependent Claim
3 words
MEPHENESIN CARBAMATE HEMIHYDRATE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-11 | 1961-05-13 | 1961-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-11 | 1965-05-13 | 1965-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-11 | 1969-05-13 | 1969-11-12 | $7700.00 | Window Closed / Lapsed |