US2531361A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of chlorinated hydrocarbons
Assignee: Ethyl Corp
•
Filing: 1950-01-11
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Granted: 1950-11-21
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Expires: 1970-01-11
Abstract
No abstract record available.
Inventors
- 👤 Frank L Padgitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:52
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
THE PROCESS OF RECOVERY OF A CHLORINATED ALIPHATIC HYDROCARBON FROM ADMIXTURE WITH AN ALKANE HYDROCARBON COMPRISING CONTACTING SAID MIXTURE WITH AN ALKYL CARBOXYLIC ACID AND SELECTIVELY ABSORBING THE CHLORINATED HYDROCARBON AND
Claim 2
Dependent Claim
31 words
THE PROCESS OF RECOVERY OF A CHLORINATED ALIPHATIC HYDROCARBON FROM ADMIXTURE WITH AN ALKANE HYDROCARBON COMPRISING CONTACTING SAID MIXTURE WITH AN ALKYL CARBOXYLIC ACID AND SELECTIVELY ABSORBING THE CHLORINATED HYDROCARBON AND
References Cited (Backward Citations)
US2275151A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-20 | 1954-05-22 | 1954-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-20 | 1958-05-22 | 1958-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-20 | 1962-05-22 | 1962-11-21 | $7700.00 | Window Closed / Lapsed |