US2584527A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unsaturated dicarboxylic acids and esters and their preparation
Assignee: EIDP Inc
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Filing: 1949-11-02
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Granted: 1952-02-05
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Expires: 1969-11-02
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles J Albisetti
- 👤 Norman G Fisher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:11
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/09; C07C51/347; C07C51/353
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A DIFUNCTIONAL COMPOUND CONSISTING SOLELY OF HYDROCARBON APART FROM THE TWO FUNCTIONAL GROUPS AND HAVING AN OPEN-CHAIN OF SEVEN CONTIGUOUS ALIPHATIC CARBON ATOMS SEPARATING SAID TWO FUNCTIONAL GROUPS WITH A SINGLE NON-CONJUGATED ETHYLENEIC LINKAGE AND THAT ATTACHED TO THE FOURTH CARBON ATOMS IN THE SAID SEVEN-CARBON CHAIN, THE TWO FUNCTIONAL GROUP BEING IDENTICAL AND BEING REPRESENTED BY THE RADICAL -COOX WHEREIN X IS SELECTED FROM THE CLASS CONSISTING OF HYDROGEN AND MONOVALENT HYDROCARBON RADICALS OF 1 TO 10 CARBON ATOMS FREE FROM ALIPHATIC UNSATURATION.
Claim 2
Dependent Claim
84 words
A DIFUNCTIONAL COMPOUND CONSISTING SOLELY OF HYDROCARBON APART FROM THE TWO FUNCTIONAL GROUPS AND HAVING AN OPEN-CHAIN OF SEVEN CONTIGUOUS ALIPHATIC CARBON ATOMS SEPARATING SAID TWO FUNCTIONAL GROUPS WITH A SINGLE NON-CONJUGATED ETHYLENEIC LINKAGE AND THAT ATTACHED TO THE FOURTH CARBON ATOMS IN THE SAID SEVEN-CARBON CHAIN, THE TWO FUNCTIONAL GROUP BEING IDENTICAL AND BEING REPRESENTED BY THE RADICAL -COOX WHEREIN X IS SELECTED FROM THE CLASS CONSISTING OF HYDROGEN AND MONOVALENT HYDROCARBON RADICALS OF 1 TO 10 CARBON ATOMS FREE FROM ALIPHATIC UNSATURATION.
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) | 1955-02-04 | 1955-08-06 | 1956-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-04 | 1959-08-06 | 1960-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-04 | 1963-08-06 | 1964-02-05 | $7700.00 | Window Closed / Lapsed |