US2600783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymers of dimethylstyrenes and vinyl acyclic compounds
Assignee: Wyeth Holdings LLC
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Filing: 1948-07-20
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Granted: 1952-06-17
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Expires: 1968-07-20
Abstract
No abstract record available.
Inventors
- 👤 Edward L Kropa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:33
CPC Classifications
C; C08; C08F; C08F212/00; C08F212/02; C08F212/04; C08F212/06; C08F212/12; C08F220/00; C08F220/02; C08F220/42; C08F220/44; C08F222/00; C08F222/10; C08F222/12; C08F222/14; C08F222/04; C08F222/06; C08F222/08; Y; Y10; Y10S; Y10S36/00; Y10S36/02; Y10S526/00; Y10S526/911
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A SOLUBLE, THERMOPLASTIC, SOLID COPOLYMER OF AT LEAST TWO COPOLYMERIZABLE MATERIALS, ONE OF WHICH IS A DIMETHYLSTYRENE SELECTED FROM THE GROUP CONSISTING OF 2,4-DIMETHYLSTYRENE, 2,5-DIMETHYLSTYRENE, AND 3,4-DIMETHYLSTYRENE, AND ANOTHER IS AN ACYCLIC COMPOUND CONTAINING A SINGLE ETHYLENIC DOUBLE BOND, EACH COPOLYMERIZABLE MATERIAL BEING PRESENT IN AN AMOUNT EQUIVALENT TO AT LEAST 10% OF THE TOTAL WEIGHT OF ALL OF SAID COPLYMERIZABLE MATERIALS, SAID COPOLYMER HAVING AN INTERINSIC VISCOSITY OF AT LEAST 0.1.
Claim 2
Dependent Claim
72 words
A SOLUBLE, THERMOPLASTIC, SOLID COPOLYMER OF AT LEAST TWO COPOLYMERIZABLE MATERIALS, ONE OF WHICH IS A DIMETHYLSTYRENE SELECTED FROM THE GROUP CONSISTING OF 2,4-DIMETHYLSTYRENE, 2,5-DIMETHYLSTYRENE, AND 3,4-DIMETHYLSTYRENE, AND ANOTHER IS AN ACYCLIC COMPOUND CONTAINING A SINGLE ETHYLENIC DOUBLE BOND, EACH COPOLYMERIZABLE MATERIAL BEING PRESENT IN AN AMOUNT EQUIVALENT TO AT LEAST 10% OF THE TOTAL WEIGHT OF ALL OF SAID COPLYMERIZABLE MATERIALS, SAID COPOLYMER HAVING AN INTERINSIC VISCOSITY OF AT LEAST 0.1.
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) | 1955-06-17 | 1955-12-17 | 1956-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-17 | 1959-12-17 | 1960-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-17 | 1963-12-17 | 1964-06-17 | $7700.00 | Window Closed / Lapsed |