US2533938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Esters of aliphatic monocarboxylic acids and polybutadiene alcohols and method for preparing the same
Assignee: EIDP Inc
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Filing: 1947-10-02
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Granted: 1950-12-12
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Expires: 1967-10-02
Abstract
No abstract record available.
Inventors
- 👤 Jenner Edward Levant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:54
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/007; C07C67/00; C07C67/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
A PROCESS FOR THE PREPARATION OF ALKANOIC ACID ESTERS OF C4N ALCOHOLS WHERE N IS A PLURAL INTEGER WHICH COMPRISES REACTING AN ALKANOIC ACID OF ONE TO SIX CARBONS UNDER ANHYDROUS CONDITIONS WITH BUTADIENE IN THE PRESENCE OF PERCHLORIC ACID.
Claim 2
Dependent Claim
5 words
ACRYCLIC ACETATES OF THE FORMULA
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) | 1953-12-11 | 1954-06-12 | 1954-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-11 | 1958-06-12 | 1958-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-11 | 1962-06-12 | 1962-12-12 | $7700.00 | Window Closed / Lapsed |