Patent US3340123A successfully refreshed from Google Patents.
US3340123A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extrusion coating with linear polypropylene and branched polyethylene blend
Assignee: EIDP Inc
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Filing: 1963-04-05
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Granted: 1967-09-05
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Expires: 1983-04-05
Abstract
No abstract record available.
Inventors
- 👤 Jr Frank Otho Kurt Osmon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:51
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/10; D21H19/14; D21H19/20; D21H19/22; B; B29; B29C; B29C48/00; B29C48/15; B32; B32B; B32B27/00; C; C08; C08L; C08L23/00; C08L23/02; C08L23/10; B29C48/03; B29C48/07; B29C48/08; C08L2207/00; C08L2207/06; C08L2207/07; C08L23/04; C08L23/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
117 words
IN A PROCESS FOR THE PREPARATION OF EXTRUSION-COATED OBJECTS IN WHICH MOLTEN RESIN IS EXTRUDED FROM A SLIT-TYPE ORIFICE ONTO A MOVING SHEET TO BE COATED, SAID SHEET MOVING AT A RATE SUFFICIENTLY HIGH TO DRAW THE RESIN EXTRUDED INTO A FILM THAT IS SUBSTANTIALLY THINNER THAN THE DISTANCE BETWEEN THE LIPS OF THE DIE, THE IMPROVEMENT WHICH COMPRISES EXTRUDING A BLEND OF NORMALLY SOLID LINEAR POLYPROPYLENE AND BRANCHED NORMALLY SOLID POLYETHYLENE, SAID BLEND CONSISTING ESSENTIALLY OF FROM 85 TO 95 PARTS BY WEIGHT LINEAR POLYPROPYLENE AND FROM 5 TO 15 PARTS BY WEIGHT BRANCHED POLYETHYLENE, SAID POLYETHYLENE HAVING A MELT INDEX OF BETWEEN 2 AND 10 GRAMS PER 10 MINUTES AS MEASURED BY ASTM METHOD D-1238-52T.
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) | 1970-09-04 | 1971-03-06 | 1971-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-04 | 1975-03-06 | 1975-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-04 | 1979-03-06 | 1979-09-05 | $7700.00 | Window Closed / Lapsed |