Patent US3183283A successfully refreshed from Google Patents.
US3183283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blends of low molecular weight, highly branched polyethylenes with high molecular weight, sparsely branched polyethylenes
Assignee: Union Carbide Corp
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Filing: 1958-01-08
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Granted: 1965-05-11
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Expires: 1978-01-08
Abstract
No abstract record available.
Inventors
- 👤 Frederick P Reding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:33
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/06; C08L2205/00; C08L2205/02; C08L2205/025; C08L2207/00; C08L2207/06; C08L2207/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
A COMPOSITION OF MATTER HAVING IMPROVED ENVIRONMENTAL STRESS CRACKING RESISTANCE AND EXTRUDABILITY PROPERTIES, WHICH CONSISTS ESSENTIALLY OF A HOMOGENEOUS MIXTURE OF FROM ABOUT 5 TO ABOUT 25 PARTS BY WEIGHT OF A LOW MOLECULAR WEIGHT, HIGHLY BRANCHED POLYETHYLENE HAVING A MELT INDEX OF FROM ABOUT 120 TO ABOUT 20,000 DECIGRAMS PER MINUTEAND A DEGREE OF BRANCHING ABOVE ABOUT 2 METHYL GROUPS PER 100 CARBON ATOMS WITH FROM ABOUT 75 TO ABOUT 95 PARTS BY WEIGHT OF A SPARSELY BRANCHED, HIGH MOLECULAR WEIGHT POLYETHYLENE HAVING A MELT INDEX BELOW ABOUT 4 DECIGRAMS PER MINUTE AND A DEGREE OF BRANCHING BELOW ABOUT 2 METHYL GROUPS PER 100 CARBON ATOMS, PER 100 PARTS BY WEIGHT OF SAID COMPOSITION, SAID COMPOSITION HAVING A MELT INDEX OF FROM ABOUT 0.1 TO ABOUT 18 DECIGRAMS PER MINUTE AND A DENSITY OF FROM ABOUT 0.915 TO ABOUT 0.935 GRAM PER CC.
Claim 2
Dependent Claim
144 words
A COMPOSITION OF MATTER HAVING IMPROVED ENVIRONMENTAL STRESS CRACKING RESISTANCE AND EXTRUDABILITY PROPERTIES, WHICH CONSISTS ESSENTIALLY OF A HOMOGENEOUS MIXTURE OF FROM ABOUT 5 TO ABOUT 25 PARTS BY WEIGHT OF A LOW MOLECULAR WEIGHT, HIGHLY BRANCHED POLYETHYLENE HAVING A MELT INDEX OF FROM ABOUT 120 TO ABOUT 20,000 DECIGRAMS PER MINUTEAND A DEGREE OF BRANCHING ABOVE ABOUT 2 METHYL GROUPS PER 100 CARBON ATOMS WITH FROM ABOUT 75 TO ABOUT 95 PARTS BY WEIGHT OF A SPARSELY BRANCHED, HIGH MOLECULAR WEIGHT POLYETHYLENE HAVING A MELT INDEX BELOW ABOUT 4 DECIGRAMS PER MINUTE AND A DEGREE OF BRANCHING BELOW ABOUT 2 METHYL GROUPS PER 100 CARBON ATOMS, PER 100 PARTS BY WEIGHT OF SAID COMPOSITION, SAID COMPOSITION HAVING A MELT INDEX OF FROM ABOUT 0.1 TO ABOUT 18 DECIGRAMS PER MINUTE AND A DENSITY OF FROM ABOUT 0.915 TO ABOUT 0.935 GRAM PER CC.
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) | 1968-05-10 | 1968-11-09 | 1969-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-10 | 1972-11-09 | 1973-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-10 | 1976-11-09 | 1977-05-11 | $7700.00 | Window Closed / Lapsed |