Patent US3028355A successfully refreshed from Google Patents.
US3028355A
Expired / Lapsed
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Process of blending polyethylene and diatomaceous earth and product thereof
Assignee: Union Carbide Corp
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Filing: 1957-08-21
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Granted: 1962-04-03
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Expires: 1977-08-21
Abstract
No abstract record available.
Inventors
- 👤 Gerald R Toy
- 👤 Marvin E Krasnow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:11
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A COMPOSITION FOR PRODUCING, BY HOT MELT EXTRUSION, POLYETHYLENE FILM CHARACTERIZED BY CLARITY AND IMPROVED ANTI-BLKOCING CHARACTERISTICS, SAID COMPOSITION COMPRISING POLYETHYLENES AND AN ANTI-BLOCKING AGENT CONSISTING OF DIATOMACEOUS EARTH IN AN AMOUNT FROM 0.2 TO 0.4 PART BY WEIGHT PER 100 PARTS BY WEIGHT OF THE POLYETHYLENE AND HAVING AN AVERAGE PARTICLE SIZE FROM 2 TO 6 MICRONS.
Claim 2
Dependent Claim
58 words
A COMPOSITION FOR PRODUCING, BY HOT MELT EXTRUSION, POLYETHYLENE FILM CHARACTERIZED BY CLARITY AND IMPROVED ANTI-BLKOCING CHARACTERISTICS, SAID COMPOSITION COMPRISING POLYETHYLENES AND AN ANTI-BLOCKING AGENT CONSISTING OF DIATOMACEOUS EARTH IN AN AMOUNT FROM 0.2 TO 0.4 PART BY WEIGHT PER 100 PARTS BY WEIGHT OF THE POLYETHYLENE AND HAVING AN AVERAGE PARTICLE SIZE FROM 2 TO 6 MICRONS.
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) | 1965-04-02 | 1965-10-02 | 1966-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-02 | 1969-10-02 | 1970-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-02 | 1973-10-02 | 1974-04-03 | $7700.00 | Window Closed / Lapsed |