Patent US2744098A successfully refreshed from Google Patents.
US2744098A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymers of vinyl compounds with alpha, beta-unsaturated dicarboxylic acids
Assignee: GAF Chemicals Corp
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Filing: 1951-10-25
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Granted: 1956-05-01
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Expires: 1971-10-25
Abstract
No abstract record available.
Inventors
- 👤 Richard S Towne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:45
CPC Classifications
C; C08; C08F; C08F22/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
THE PROCESS OF PREPARING LOW MOLECULAR WEIGHT COPOLYMERS OF VINYL COMPOUNDS WITH POLYMERIZABLE DICARBOXYLIC ACID COMPOUNDS WHICH COMPRISES HEATING TO REFLUX A SOLUTION OF AN A,B-UNSATURATED DICARBOXYLIC ACID COMPOUND SELECTED FROM THE CLASS CONSISTING OF THOSE CORRESPONDING TO THE GENERAL FORMULAE:
Claim 2
Dependent Claim
41 words
THE PROCESS OF PREPARING LOW MOLECULAR WEIGHT COPOLYMERS OF VINYL COMPOUNDS WITH POLYMERIZABLE DICARBOXYLIC ACID COMPOUNDS WHICH COMPRISES HEATING TO REFLUX A SOLUTION OF AN A,B-UNSATURATED DICARBOXYLIC ACID COMPOUND SELECTED FROM THE CLASS CONSISTING OF THOSE CORRESPONDING TO THE GENERAL FORMULAE:
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) | 1959-05-01 | 1959-10-31 | 1960-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-01 | 1963-10-31 | 1964-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-01 | 1967-10-31 | 1968-05-01 | $7700.00 | Window Closed / Lapsed |