US2561254A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unsaturated ether aldehydes and acetals thereof
Assignee: Shell Development Co
•
Filing: 1948-03-23
•
Granted: 1951-07-17
•
Expires: 1968-03-23
Abstract
No abstract record available.
Inventors
- 👤 Richard R Whetstone
- 👤 Curtis W Smith
- 👤 Douglas G Norton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:59
CPC Classifications
C; C07; C07C; C07C47/00; C07C47/20; C07C47/277; C07C45/00; C07C45/61; C07C45/67; C07C45/68; C07C45/70; C07C45/71; C08; C08F; C08F20/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A COMPOUND OF THE CLASS CONSISTING OF THE ETHERS OF THE BETA-OXY LOWER SATURATED ALIPHATIC ALDEHYDES, THE ETHER OXYGEN ATOM BEING THE BETAOXY OXYGEN ATOM OF SAID BETA-OXY ALDEHYDE, THE HYDROGEN ATOM OF THE HYDROXYL GROUP OF SAID BETA-OXY ALDEHYDE BEING REPLACED BY A BETA, GAMMA-OLEFINIC HYDROCARBON GROUP, AND ACETALS OF MONOHYDRIC ALCOHOLS WITH THUS-DEFINED ALDEHYDE ETHERS.
Claim 2
Dependent Claim
57 words
A COMPOUND OF THE CLASS CONSISTING OF THE ETHERS OF THE BETA-OXY LOWER SATURATED ALIPHATIC ALDEHYDES, THE ETHER OXYGEN ATOM BEING THE BETAOXY OXYGEN ATOM OF SAID BETA-OXY ALDEHYDE, THE HYDROGEN ATOM OF THE HYDROXYL GROUP OF SAID BETA-OXY ALDEHYDE BEING REPLACED BY A BETA, GAMMA-OLEFINIC HYDROCARBON GROUP, AND ACETALS OF MONOHYDRIC ALCOHOLS WITH THUS-DEFINED ALDEHYDE ETHERS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-16 | 1955-01-15 | 1955-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-16 | 1959-01-15 | 1959-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-16 | 1963-01-15 | 1963-07-17 | $7700.00 | Window Closed / Lapsed |