Patent US2499847A successfully refreshed from Google Patents.
US2499847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
3 chloro, 2,2 dimethyl propylamine and process of preparing
Assignee: EIDP Inc
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Filing: 1946-07-06
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Granted: 1950-03-07
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Expires: 1966-07-06
Abstract
No abstract record available.
Inventors
- 👤 Oliver W Cass
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:27
CPC Classifications
C; C07; C07C; C07C209/00; C07C209/44; C07C209/48; C07C211/00; C07C211/01; C07C211/02; C07C211/15; C07C253/00; C07C253/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
A PROCESS THE PRODUCTION OF 1-CHLORO-2, 2-DIMETHYL-3-AMINO PROPANE WITH 1-EHLORO-2CYANO-2-METHYL PROPANE IN THE PRESENCE OF NICKEL AT A TEMPERATURE BETWEEN 80*C. AND 200*C. AND AT A PRESSURE BETWEEN 1000 LBS. AND 5000 LBS. PER SQUARE INCH.
Claim 2
Dependent Claim
36 words
A PROCESS THE PRODUCTION OF 1-CHLORO-2, 2-DIMETHYL-3-AMINO PROPANE WITH 1-EHLORO-2CYANO-2-METHYL PROPANE IN THE PRESENCE OF NICKEL AT A TEMPERATURE BETWEEN 80*C. AND 200*C. AND AT A PRESSURE BETWEEN 1000 LBS. AND 5000 LBS. PER SQUARE INCH.
References Cited (Backward Citations)
GB490922A
Cited
US2346492A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-06 | 1953-09-05 | 1954-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-06 | 1957-09-05 | 1958-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-06 | 1961-09-05 | 1962-03-07 | $7700.00 | Window Closed / Lapsed |