US2533376A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymerization of maleic anhydride and allyl esters of long chain monocarboxylic acids
Assignee: Libbey Owens Ford Glass Co
•
Filing: 1947-10-23
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Granted: 1950-12-12
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Expires: 1967-10-23
Abstract
No abstract record available.
Inventors
- 👤 Jones John Leslie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:12
CPC Classifications
C; C08; C08F; C08F18/00; C08F18/02; C08F18/12; C08F22/00; C08F22/04; C08F8/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A POLYMERIZABLE COMPOSITION CONSISTING OF (1) MALEIC ANHYDRIDE AND (2) AN ESTER OF (A) AN UNSUBSTITUTED BETA-GAMMA-OLEFINIC MONOHYDRIC ALCOHOL HAVING FROM THREE TO FOUR CARBON ATOMS OF WHICH NOT MORE THAN THREE FORM A CHAIN IN SERIES WITH (B) AN UNSUBSTITUTED, SATURATED, ALIPHATIC MONOCARBOXYLIC ACID HAVING FROM SIX TO EIGHTEEN CARBON ATOMS.
Claim 2
Dependent Claim
52 words
A POLYMERIZABLE COMPOSITION CONSISTING OF (1) MALEIC ANHYDRIDE AND (2) AN ESTER OF (A) AN UNSUBSTITUTED BETA-GAMMA-OLEFINIC MONOHYDRIC ALCOHOL HAVING FROM THREE TO FOUR CARBON ATOMS OF WHICH NOT MORE THAN THREE FORM A CHAIN IN SERIES WITH (B) AN UNSUBSTITUTED, SATURATED, ALIPHATIC MONOCARBOXYLIC ACID HAVING FROM SIX TO EIGHTEEN CARBON ATOMS.
References Cited (Backward Citations)
US2280256A
Cited
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 |