Patent US2694077A successfully refreshed from Google Patents.
US2694077A
Expired / Lapsed
US
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Production of hydroxy derivatives of methacrolein dimer
Assignee: Union Carbide Corp
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Filing: 1952-02-19
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Granted: 1954-11-09
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Expires: 1972-02-19
Abstract
No abstract record available.
Inventors
- 👤 Jr Harry A Stansbury
- 👤 Howard R Guest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:44
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/15; C08K5/151; C08K5/1545; C07; C07C; C07C45/00; C07C45/56; C07C45/57; C07C45/60; C07D; C07D309/00; C07D309/02; C07D309/08; C07D309/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
AS NEW COMPOUNDS, HYDROXY DERIVATIVES OF METHACROLEIN DIMER, SELECTED FROM THE CLASS CONSISTING OF 2,5DINETHYL-2-FORMYLTETRAHYDROPYRAN-5-OL AND 2,5-DIMETHYL2-HYDROXYADIPALDEHYDE.
Claim 2
Dependent Claim
17 words
AS NEW COMPOUNDS, HYDROXY DERIVATIVES OF METHACROLEIN DIMER, SELECTED FROM THE CLASS CONSISTING OF 2,5DINETHYL-2-FORMYLTETRAHYDROPYRAN-5-OL AND 2,5-DIMETHYL2-HYDROXYADIPALDEHYDE.
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) | 1957-11-08 | 1958-05-10 | 1958-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-08 | 1962-05-10 | 1962-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-08 | 1966-05-10 | 1966-11-09 | $7700.00 | Window Closed / Lapsed |