US2824049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the separation of decomposition
Assignee: —
•
Filing: —
•
Granted: 1958-02-18
•
Expires: 1975-02-18
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:54
CPC Classifications
C; C07; C07C; C07C39/00; C07C39/02; C07C39/04; C07C15/00; C07C15/02; C07C15/085; C07C15/40; C07C15/42; C07C15/44; C07C37/00; C07C37/08; C07C45/00; C07C45/51; C07C45/53; C07C45/78; C07C45/81; C07C45/82; C07C49/00; C07C49/04; C07C49/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A PROCESS FOR THE SEPARATION OF THE DECOMPOSITION PRODUCTS OF CUMENT HYDROPEROXIDE CONTAINING PHENOL, ACETONE AND OTHER PRODUCTS INCLUDING CUMENE, METHYLSTYRENE, DIMETHYLPHENYL CARBINOL AND ACETOPHENONE WHICH COMPRISES CONTINUOUSLY INTRODUCING SAID DECOMPOSITION PRODUCTS AS AN INTERMEDIATE POINT OF A SINGLE DISTILLATION ZONE CONTAINING WATER, WITHDRAWING SUBSTANTIALLY PURE ACETONE FROM THE HEAD OF THE DISTILLATION ZONE, WITHDRAWING A DECENTABLE MIXTURE OF THE HYDROCARBONS AND WATER AT A POINT BETWEEN THE HEAD OF THE DISTILLATION ZONE AND THE POINT OF THE INLET OF THE FEED MIXTURES, SAID HYDROCARBONS BEING SUBSTANTIALLY FREE FROM PHENOL, THE WATER CONSTITUTENTS OF THE SAID MIXTURE BEING RETURNED TO THE DISTILLATION ZONE AFTER DECANTATION, WITHDRAWING DIMETHYL-
Claim 2
Dependent Claim
107 words
A PROCESS FOR THE SEPARATION OF THE DECOMPOSITION PRODUCTS OF CUMENT HYDROPEROXIDE CONTAINING PHENOL, ACETONE AND OTHER PRODUCTS INCLUDING CUMENE, METHYLSTYRENE, DIMETHYLPHENYL CARBINOL AND ACETOPHENONE WHICH COMPRISES CONTINUOUSLY INTRODUCING SAID DECOMPOSITION PRODUCTS AS AN INTERMEDIATE POINT OF A SINGLE DISTILLATION ZONE CONTAINING WATER, WITHDRAWING SUBSTANTIALLY PURE ACETONE FROM THE HEAD OF THE DISTILLATION ZONE, WITHDRAWING A DECENTABLE MIXTURE OF THE HYDROCARBONS AND WATER AT A POINT BETWEEN THE HEAD OF THE DISTILLATION ZONE AND THE POINT OF THE INLET OF THE FEED MIXTURES, SAID HYDROCARBONS BEING SUBSTANTIALLY FREE FROM PHENOL, THE WATER CONSTITUTENTS OF THE SAID MIXTURE BEING RETURNED TO THE DISTILLATION ZONE AFTER DECANTATION, WITHDRAWING DIMETHYL-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-17 | 1961-08-19 | 1962-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-17 | 1965-08-19 | 1966-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-17 | 1969-08-19 | 1970-02-18 | $7700.00 | Window Closed / Lapsed |