US2979471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaped articles of vinyl chloride resin and ethyl cellulose
Assignee: Okonite Co
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Filing: 1958-12-12
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Granted: 1961-04-11
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Expires: 1978-12-12
Abstract
No abstract record available.
Inventors
- 👤 John J Sweeney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:16
CPC Classifications
C; C08; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A SHAPED, DULL-SURFACED, PLASTIC ARTICLE OF MANUFACTURE THE BASE MATERIAL OF WHICH CONSISTS OF ETHYL CELLULOSE AND A POLYMER SELECTED FROM THE GROUP CONSISTING OF A HOMOPOLYMER OF VINYL CHLORIDE AND A COPOLYMER OF VINYL CHLORIDE AND VINYL ACETATE, THE ETHYL CELLULOSE RANGING IN AMOUNT FROM THREE TO TWENTY-FIVE PARTS BY WEIGHT TO EACH ONE HUNDRED PARTS BY WEIGHT OF POLYMER.
Claim 2
Dependent Claim
61 words
A SHAPED, DULL-SURFACED, PLASTIC ARTICLE OF MANUFACTURE THE BASE MATERIAL OF WHICH CONSISTS OF ETHYL CELLULOSE AND A POLYMER SELECTED FROM THE GROUP CONSISTING OF A HOMOPOLYMER OF VINYL CHLORIDE AND A COPOLYMER OF VINYL CHLORIDE AND VINYL ACETATE, THE ETHYL CELLULOSE RANGING IN AMOUNT FROM THREE TO TWENTY-FIVE PARTS BY WEIGHT TO EACH ONE HUNDRED PARTS BY WEIGHT OF POLYMER.
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) | 1964-04-10 | 1964-10-10 | 1965-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-10 | 1968-10-10 | 1969-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-10 | 1972-10-10 | 1973-04-11 | $7700.00 | Window Closed / Lapsed |