US3215556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxidized polyethylene coated cellulosic materials
Assignee: WR Grace and Co
•
Filing: 1962-06-05
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Granted: 1965-11-02
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Expires: 1982-06-05
Abstract
No abstract record available.
Inventors
- 👤 Clifton L Kehr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:04
CPC Classifications
C; C09; C09D; C09D123/00; C09D123/26; C09D123/30; B; B32; B32B; B32B27/00; C08; C08F; C08F8/00; C08F8/50; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31899; Y10T428/31902
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
AN ARTICLE OF MANUFACTURE COMPRISING A CELLULOSIC MATERIAL COATED WITH A STRONGLY ADHERENT LAYER CONSISTING ESSENTIALLY OF AN OXIDIZED POLYETHYLENE HAVING A DENSITY OF FROM ABOUT 0.930 TO ABOUT 0.990, A CRYSTALLINE MELTING POINT OF FROM ABOUT 125*C. TO ABOUT 150*C., A CARBONYL CONTENT OF FROM ABOUT 0.05 TO ABOUT 5.0% AND A MELT INDEX OF FROM ABOUT 0.1 TO ABOUT 50 WITH THE RATIO OF THE CARBONYL CONTENT IN % /(MELT INDEX)(**1/2) BEING AT LEAST ABOUT 0.08.
Claim 2
Dependent Claim
78 words
AN ARTICLE OF MANUFACTURE COMPRISING A CELLULOSIC MATERIAL COATED WITH A STRONGLY ADHERENT LAYER CONSISTING ESSENTIALLY OF AN OXIDIZED POLYETHYLENE HAVING A DENSITY OF FROM ABOUT 0.930 TO ABOUT 0.990, A CRYSTALLINE MELTING POINT OF FROM ABOUT 125*C. TO ABOUT 150*C., A CARBONYL CONTENT OF FROM ABOUT 0.05 TO ABOUT 5.0% AND A MELT INDEX OF FROM ABOUT 0.1 TO ABOUT 50 WITH THE RATIO OF THE CARBONYL CONTENT IN % /(MELT INDEX)(**1/2) BEING AT LEAST ABOUT 0.08.
References Cited (Backward Citations)
US3103459A
Cited
US3076720A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-01 | 1969-05-03 | 1969-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-01 | 1973-05-03 | 1973-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-01 | 1977-05-03 | 1977-11-02 | $7700.00 | Window Closed / Lapsed |