US2912413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-electrostatic styrene polymer compositions
Assignee: Monsanto Chemicals Ltd
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Filing: 1955-12-19
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Granted: 1959-11-10
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Expires: 1975-12-19
Abstract
No abstract record available.
Inventors
- 👤 Baer Massimo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:46
CPC Classifications
C; C08; C08F; C08F212/00; C08F212/02; C08F212/04; C08F8/00; C08F8/14; Y; Y10; Y10S; Y10S260/00; Y10S260/21
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A HIGH MOLECULAR WEIGHT SOLID THERMOPLASTIC INTERPOLYMER OF AT LEAST 80 WEIGHT PERCENT OF MONOMERIC UNITS OF A VINYLIDIENE AROMATIC COMPOUND OF THE GROUP CONSISTING OF STYRENE, ALPHA-METHYLSTYRENE, NUCLEAR CHLOROSTYRENES, NUCLEAR ALKYLSTYRENES AND MIXTURES THEREOF AND LESS THAN 20 WEIGHT PERCENT OF MONOMERIC UNITS OF AN ACID MONOMER OF THE GROUP CONSISTING OF ALPHA-BETA ETHYLENICALLY UNSATURATED MONOCARBOXYLIC ACIDS, ALPHA-BETA ETHYLENICALLY UNSATURATED DICARBOXYLIC ACIDS, ANHYDRIDES OF ALPHA-BETA ETHYLENICALLY UNSATURATED ETHYLENICALLY ACIDS AND MIXTURES THEREOF, EACH MOLAR PORTION OF THE ACID MONOMER INCLUDED IN THE INTERPOLYMER BEING ESTERFIED WITH AT LEAST ABOUT 1 MOLAR PORTION OF A POLYHYDRIC ALCOHOL OF THE GROUP CONSISTING OF GLYCERIN, PENTAERYTHRITOL, SORBITOL, MANNITOL AND ALKYLENE GLYCOLS CONFORMING TO THE FORMULA:
Claim 2
Dependent Claim
113 words
A HIGH MOLECULAR WEIGHT SOLID THERMOPLASTIC INTERPOLYMER OF AT LEAST 80 WEIGHT PERCENT OF MONOMERIC UNITS OF A VINYLIDIENE AROMATIC COMPOUND OF THE GROUP CONSISTING OF STYRENE, ALPHA-METHYLSTYRENE, NUCLEAR CHLOROSTYRENES, NUCLEAR ALKYLSTYRENES AND MIXTURES THEREOF AND LESS THAN 20 WEIGHT PERCENT OF MONOMERIC UNITS OF AN ACID MONOMER OF THE GROUP CONSISTING OF ALPHA-BETA ETHYLENICALLY UNSATURATED MONOCARBOXYLIC ACIDS, ALPHA-BETA ETHYLENICALLY UNSATURATED DICARBOXYLIC ACIDS, ANHYDRIDES OF ALPHA-BETA ETHYLENICALLY UNSATURATED ETHYLENICALLY ACIDS AND MIXTURES THEREOF, EACH MOLAR PORTION OF THE ACID MONOMER INCLUDED IN THE INTERPOLYMER BEING ESTERFIED WITH AT LEAST ABOUT 1 MOLAR PORTION OF A POLYHYDRIC ALCOHOL OF THE GROUP CONSISTING OF GLYCERIN, PENTAERYTHRITOL, SORBITOL, MANNITOL AND ALKYLENE GLYCOLS CONFORMING TO THE FORMULA:
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-09 | 1963-05-11 | 1963-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-09 | 1967-05-11 | 1967-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-09 | 1971-05-11 | 1971-11-10 | $7700.00 | Window Closed / Lapsed |