US3230288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of pyrolyzing, blending and extruding a 1-olefin polymer
Assignee: Phillips Petroleum Co
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Filing: 1961-09-01
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Granted: 1966-01-18
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Expires: 1981-09-01
Abstract
No abstract record available.
Inventors
- 👤 Eulas W Henderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:07
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; B; B29; B29C; B29C48/00; B29C48/25; B29C48/36; B29C48/395; C08F; C08F8/00; C08F8/50; B29C48/03; B29C48/05; B29C48/07; B29C48/08; B29C48/09; C08F2810/00; C08F2810/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A PROCESS FOR EXTRUDING A POLYMER OF A 1-OLEFIN HAVING A MOLECLAR WEIGHT ABOVE 25,000, SAID PROCESS COMPRISING THE STEPS OF INTRODUCING SAID POLYMER INTO A PYROLYSIS ZONE; ELEVATING THE TEMPERATURE OF SAID POLYMER TO A TEMPERATURE IN A RANGE OF 600-900*F. WITHIN SAID PROLYSIS ZONE; MAINTAINING SAID TEMPERATURE FOR A PERIOD OF TIME SUFFICIENT TO REDUCE THE MOLECULAR WEIGHT OF SAID POLYMER TO A RANGE OF 2,000-12,000; ADMIXING WITH SAID
Claim 2
Dependent Claim
71 words
A PROCESS FOR EXTRUDING A POLYMER OF A 1-OLEFIN HAVING A MOLECLAR WEIGHT ABOVE 25,000, SAID PROCESS COMPRISING THE STEPS OF INTRODUCING SAID POLYMER INTO A PYROLYSIS ZONE; ELEVATING THE TEMPERATURE OF SAID POLYMER TO A TEMPERATURE IN A RANGE OF 600-900*F. WITHIN SAID PROLYSIS ZONE; MAINTAINING SAID TEMPERATURE FOR A PERIOD OF TIME SUFFICIENT TO REDUCE THE MOLECULAR WEIGHT OF SAID POLYMER TO A RANGE OF 2,000-12,000; ADMIXING WITH SAID
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) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |