US2520083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blended olefinic copolymers
Assignee: Monsanto Chemicals Ltd
•
Filing: 1948-07-29
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Granted: 1950-08-22
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Expires: 1968-07-29
Abstract
No abstract record available.
Inventors
- 👤 Earl C Chapin
- 👤 George E Ham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:54
CPC Classifications
C; C08; C08L; C08L31/00; C08L31/02; C08L31/04; C08L33/00; C08L33/04; C08L33/06; C08L33/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A HOMOGENEOUS TRANSPARENT POLYMERIC COMPOSITION WHICH COMPRISES A BLEND OF 35 TO 65 PARTS BY WEIGHT OF A COPOLYMER OF A MIXTURE OF MONOMERS CONSISTING OF 5 TO 30 PERCENT ACYLONITRILE. 50 TO 75 PERCENT VINYL ACETATE, AND 20 TO 50 PERCENT OF BUTYL ACRYLATE, AND FROM 65 TO 35 PARTS BY WEIGHT OF A COPOLYMER OF A MIXTURE OF MONOMERS CONSISTING OF 25 TO 60 PERCENT VINYL ACETATE AND 40 TO 75 PERCENT OF BUTYLE ACRYLATE.
Claim 2
Dependent Claim
77 words
A HOMOGENEOUS TRANSPARENT POLYMERIC COMPOSITION WHICH COMPRISES A BLEND OF 35 TO 65 PARTS BY WEIGHT OF A COPOLYMER OF A MIXTURE OF MONOMERS CONSISTING OF 5 TO 30 PERCENT ACYLONITRILE. 50 TO 75 PERCENT VINYL ACETATE, AND 20 TO 50 PERCENT OF BUTYL ACRYLATE, AND FROM 65 TO 35 PARTS BY WEIGHT OF A COPOLYMER OF A MIXTURE OF MONOMERS CONSISTING OF 25 TO 60 PERCENT VINYL ACETATE AND 40 TO 75 PERCENT OF BUTYLE ACRYLATE.
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) | 1953-08-21 | 1954-02-20 | 1954-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-21 | 1958-02-20 | 1958-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-21 | 1962-02-20 | 1962-08-22 | $7700.00 | Window Closed / Lapsed |