US2879298A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of diacetone alcohol
Assignee: Philip Morris USA Inc
•
Filing: 1957-05-29
•
Granted: 1959-03-24
•
Expires: 1977-05-29
Abstract
No abstract record available.
Inventors
- 👤 Robert B Seligman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:13
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/61; C07C45/67; C07C45/68; C07C45/72
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
A CONTINOUS PROCESS FOR THE PRODUCTION OF ALDOL CONDENSATION PRODUCTS WHICH COMPRISES BRINGING A MEMBER SELECTED FROM THE GROUP CONSISTING OF ALDEHYDES AND KETONES INTO CONTACT IN THE LIQUID PHASE AT A TEMPERATURE OF FROM 0-30*C. WITH AN ACTIVATED ALUMINA HAVING A MILDLY ALKALINE PH.
Claim 2
Dependent Claim
45 words
A CONTINOUS PROCESS FOR THE PRODUCTION OF ALDOL CONDENSATION PRODUCTS WHICH COMPRISES BRINGING A MEMBER SELECTED FROM THE GROUP CONSISTING OF ALDEHYDES AND KETONES INTO CONTACT IN THE LIQUID PHASE AT A TEMPERATURE OF FROM 0-30*C. WITH AN ACTIVATED ALUMINA HAVING A MILDLY ALKALINE PH.
References Cited (Backward Citations)
US2130592A
Cited
US2800510A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-23 | 1962-09-22 | 1963-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-23 | 1966-09-22 | 1967-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-23 | 1970-09-22 | 1971-03-24 | $7700.00 | Window Closed / Lapsed |