US3280220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blend of high density polyethylene-1-butene copolymer
Assignee: Phillips Petroleum Co
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Filing: 1963-04-29
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Granted: 1966-10-18
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Expires: 1983-04-29
Abstract
No abstract record available.
Inventors
- 👤 William M Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:31
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/06; C08L23/08; C08L23/0807; C08L23/0815
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A BLEND CONSITING ESSENTIALLY OF: (A) 20-60 WEIGHT PERCENT OF A COPOLYMER OF ETHYLENE AND BUTENE-1 HAVING A DENSITY IN THE RANGE OF 0.920 TO 0.950 GRAMS PER CC., A HIGH LOAD MELT INDEX OF 0.1 TO 20, AND AN ESC (ASTM D 1693-60T) GREATER THAN 500 HOURS AND (B) 40-80 WEIGHT PERCENT OF A HOMOPOLYMER OF ETHYLENE HAVING A DENSITY IN THE RANGE OF 0.955 TO 0.9270 GRAMS PER CC., A MELT INDEX OF 1.0-20, AND AN ESC (ASTM D 1693-60T) LESS THAN 10, SAID RESULTING BLEND HAVING A DENSITY IN THE RANGE OF 0.934 TO 0.966 GRAM PER CC., A MELT INDEX IN THE RANGE OF 0.1 TO 1.0, AND AN ESC (ASTM D 1693-6DT) GREATER THAN 60 HOURS.
Claim 2
Dependent Claim
121 words
A BLEND CONSITING ESSENTIALLY OF: (A) 20-60 WEIGHT PERCENT OF A COPOLYMER OF ETHYLENE AND BUTENE-1 HAVING A DENSITY IN THE RANGE OF 0.920 TO 0.950 GRAMS PER CC., A HIGH LOAD MELT INDEX OF 0.1 TO 20, AND AN ESC (ASTM D 1693-60T) GREATER THAN 500 HOURS AND (B) 40-80 WEIGHT PERCENT OF A HOMOPOLYMER OF ETHYLENE HAVING A DENSITY IN THE RANGE OF 0.955 TO 0.9270 GRAMS PER CC., A MELT INDEX OF 1.0-20, AND AN ESC (ASTM D 1693-60T) LESS THAN 10, SAID RESULTING BLEND HAVING A DENSITY IN THE RANGE OF 0.934 TO 0.966 GRAM PER CC., A MELT INDEX IN THE RANGE OF 0.1 TO 1.0, AND AN ESC (ASTM D 1693-6DT) GREATER THAN 60 HOURS.
References Cited (Backward Citations)
CA641321A
Cited
US3183283A
Cited
FR1240852A
Cited
US3086958A
Cited
US3176051A
Cited
US3179719A
Cited
US3179720A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |