US2537015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for polymerizing unsaturated compounds
Assignee: Monsanto Chemicals Ltd
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Filing: 1946-12-28
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Granted: 1951-01-09
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Expires: 1966-12-28
Abstract
No abstract record available.
Inventors
- 👤 Gerald R Barrett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:06
CPC Classifications
C; C08; C08F; C08F226/00; C08F226/02; C08F2/00; C08F2/36; C08F22/00; C08F220/00; C08F220/02; C08F220/10; C08F220/12; C08F220/14; C08F246/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A PROCESS OF POLYMERIZING POLYMERIZABLE UNSATURATED COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF STYRENE, METHYL ACRYLATE AND MIXTURES OF STYRENE WITH UNSATURATED COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF MALEIC ANHYDRIDE AND THE MONO-FUNCTIONAL ALKYL HALF ESTERS OF MALEIC, FUMARIC, CIRTRACONIC, PHENYL, MALEIC, BENZYL MALEIC AND ETHYL MALEIC ACIDS WHICH COMPRISES INCORPORATING THEREWITH FROM 0.01 TO 1.0%, ON THE WEIGHT OF SAID COMPOUNDS, OF A COMPOUND POSSESSING THE STRUCTURAL FORMULA;
Claim 2
Dependent Claim
70 words
A PROCESS OF POLYMERIZING POLYMERIZABLE UNSATURATED COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF STYRENE, METHYL ACRYLATE AND MIXTURES OF STYRENE WITH UNSATURATED COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF MALEIC ANHYDRIDE AND THE MONO-FUNCTIONAL ALKYL HALF ESTERS OF MALEIC, FUMARIC, CIRTRACONIC, PHENYL, MALEIC, BENZYL MALEIC AND ETHYL MALEIC ACIDS WHICH COMPRISES INCORPORATING THEREWITH FROM 0.01 TO 1.0%, ON THE WEIGHT OF SAID COMPOUNDS, OF A COMPOUND POSSESSING THE STRUCTURAL 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) | 1954-01-08 | 1954-07-10 | 1955-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-08 | 1958-07-10 | 1959-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-08 | 1962-07-10 | 1963-01-09 | $7700.00 | Window Closed / Lapsed |