US2552513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of aldehydes and ketones
Assignee: MW Kellogg Co
•
Filing: 1948-07-24
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Granted: 1951-05-15
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Expires: 1968-07-24
Abstract
No abstract record available.
Inventors
- 👤 Blanchard Doris Wilson
- 👤 George G Lauer
- 👤 Robert S Pratt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:30
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/78; C07C45/85; C07C45/81; C07C45/82
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A METHOD FOR SEPARATING AN ALDEHYDE AND A KETONE FROM A MIXTURE THEREOF WHICH COMPRISES CONTACTING SAID MIXTURE WITH A COMPOUND COMPRISING HYDROXYLAMINE IN AN AMOUNT RESTRICTED TO LESS THAN THAT SUFFICIENT TO CONVERT ALL OF SAID ALDEHYDE AND A SUBSTANTIAL PORTION OF SAID KETONE TO THEIR CORRESPONDING OXIMES, AND SEPARATING THE OXIME REACTION PRODUCT FROM SAID MIXTURE.
Claim 2
Independent Claim
58 words
A METHOD FOR SEPARATING AN ALDEHYDE AND A KETONE FROM A MIXTURE THEREOF WHICH COMPRISES CONTACTING SAID MIXTURE WITH A COMPOUND COMPRISING HYDROXYLAMINE IN AN AMOUNT RESTRICTED TO LESS THAN THAT SUFFICIENT TO CONVERT ALL OF SAID ALDEHYDE AND A SUBSTANTIAL PORTION OF SAID KETONE TO THEIR CORRESPONDING OXIMES, AND SEPARATING THE OXIME REACTION PRODUCT FROM SAID MIXTURE.
References Cited (Backward Citations)
US1892972A
Cited
US1987601A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-14 | 1954-11-13 | 1955-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-14 | 1958-11-13 | 1959-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-14 | 1962-11-13 | 1963-05-15 | $7700.00 | Window Closed / Lapsed |