US2575014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of aliphatic di-ketones
Assignee: Distillers Co Yeast Ltd
•
Filing: 1949-04-05
•
Granted: 1951-11-13
•
Expires: 1969-04-05
Abstract
No abstract record available.
Inventors
- 👤 Hawkins Edwin George Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:10
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/51; C07C45/53
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A PROCESS WHICH COMPRISES REACTING WITH A SOLUTION OF A FERROUS SALT IN THE PRESENCE OF SOME WATER, A HYDROPEROXIDE IN THE ALKYL SUBSTITUTED SATURATED ALICYCLIC HYDROCARBON RING SELECTED FROM THE GROUP CONSISTING OF CYCLOPENTANE AND CYCLOHEXANE WHEREIN THE PEROXIDE GROUP IS ATTACHED TO A TERTIARY CARBON ATOM WHICH FORMS PART OF SAID HYDROCARBON RIGN AND IS ALSO ATTACHED TO SAID ALKYL GROUP, THE DI-KETONE PRODUCED HAVING TWICE AS MANY CARBON ATOMS AS THE SAID RING COMPOUND.
Claim 2
Dependent Claim
77 words
A PROCESS WHICH COMPRISES REACTING WITH A SOLUTION OF A FERROUS SALT IN THE PRESENCE OF SOME WATER, A HYDROPEROXIDE IN THE ALKYL SUBSTITUTED SATURATED ALICYCLIC HYDROCARBON RING SELECTED FROM THE GROUP CONSISTING OF CYCLOPENTANE AND CYCLOHEXANE WHEREIN THE PEROXIDE GROUP IS ATTACHED TO A TERTIARY CARBON ATOM WHICH FORMS PART OF SAID HYDROCARBON RIGN AND IS ALSO ATTACHED TO SAID ALKYL GROUP, THE DI-KETONE PRODUCED HAVING TWICE AS MANY CARBON ATOMS AS THE SAID RING COMPOUND.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-12 | 1955-05-14 | 1955-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-12 | 1959-05-14 | 1959-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-12 | 1963-05-14 | 1963-11-13 | $7700.00 | Window Closed / Lapsed |