Patent US2887464A successfully refreshed from Google Patents.
US2887464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition comprising copolymers of methyl methacrylate and alpha-methylstyrene with polymers of acrylic esters
Assignee: Eastman Kodak Co
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Filing: 1954-11-15
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Granted: 1959-05-19
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Expires: 1974-11-15
Abstract
No abstract record available.
Inventors
- 👤 Jr Harry W Coover
- 👤 Jr Willis C Wooten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:27
CPC Classifications
C; C08; C08L; C08L25/00; C08L25/02; C08L25/16; C08L33/00; C08L33/04; C08L33/06; C08L33/10; C08L33/12; C08L33/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
56 words
A RESINOUS COMPOSITION COMPRISING A MIXTURE OF FROM 80 TO 98% BY WEIGHT OF A COPOLYMER OF FROM 55 TO 90% BY WEIGHT OF METHYL METHACRLATE AND FROM 45 TO 10% BY WEIGHT OF A-METHYLSTYRENE, AND FROM 20 TO 2% BY WEIGHY OF A HOMOPOLYMER OF AN A PLATE COMPOUND REPRESENTED BY THE FOLLOWING GENERAL 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) | 1962-05-18 | 1962-11-17 | 1963-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-18 | 1966-11-17 | 1967-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-18 | 1970-11-17 | 1971-05-19 | $7700.00 | Window Closed / Lapsed |