US2772253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Terpolymers
Assignee: Monsanto Chemicals Ltd
•
Filing: 1953-08-03
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Granted: 1956-11-27
•
Expires: 1973-08-03
Abstract
No abstract record available.
Inventors
- 👤 Earl C Chapin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:39
CPC Classifications
C; C08; C08F; C08F212/00; C08F212/02; C08F212/04; C08F212/06; C08F220/00; C08F220/02; C08F220/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A MULTIPOLYMER COMPRISING THE COPOLYMERIZATION PRODUCT OF FROM 2-50 PARTS OF ACENAPHTHYLENE, FROM 2-96 PARTS OF A COMPOUND TAKEN FROM THE GROUP CONSISTING OF ACRYLONITRILE AND METHACRYLONITRILE AND MIXTURES THEREOF AND FROM 2-69 PARTS OF A COMPOUND TAKEN FROM THE GROUP CONSISTING OF STYRENE, O-METHYLSTYRENE, MMETHYLSTYRENE, P-METHYLSTYRENE AND MIXTURES THEREOF, THE SUM OF THE PARTS OF EACH COMPONENT EQUALLING 100 PARTS.
Claim 2
Dependent Claim
61 words
A MULTIPOLYMER COMPRISING THE COPOLYMERIZATION PRODUCT OF FROM 2-50 PARTS OF ACENAPHTHYLENE, FROM 2-96 PARTS OF A COMPOUND TAKEN FROM THE GROUP CONSISTING OF ACRYLONITRILE AND METHACRYLONITRILE AND MIXTURES THEREOF AND FROM 2-69 PARTS OF A COMPOUND TAKEN FROM THE GROUP CONSISTING OF STYRENE, O-METHYLSTYRENE, MMETHYLSTYRENE, P-METHYLSTYRENE AND MIXTURES THEREOF, THE SUM OF THE PARTS OF EACH COMPONENT EQUALLING 100 PARTS.
References Cited (Backward Citations)
US2445181A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-27 | 1960-05-28 | 1960-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-27 | 1964-05-28 | 1964-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-27 | 1968-05-28 | 1968-11-27 | $7700.00 | Window Closed / Lapsed |