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US3232918A
Expired / Lapsed
US
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Polyolefines molecular weight reduction process
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1961-03-17
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Granted: 1966-02-01
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Expires: 1981-03-17
Abstract
No abstract record available.
Inventors
- 👤 Rayner Laurence Stephen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:08
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/50; Y; Y10; Y10S; Y10S526/00; Y10S526/914
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
32 words
A THERMAL DEGRADATION PROCESS COMPRISING HEATING A SLURRY IN WATER, CONTAINING OXYGEN, OF POWDERED SOLID CRYSTALLINE POLYMER OF AN ALIPHATIC MONO-ALPHA-OLEFIN, PREPARED BY A LOW PRESSURE PROCESS, AT A TEMPERATURE OF FROM
Claim 2
Dependent Claim
32 words
A THERMAL DEGRADATION PROCESS COMPRISING HEATING A SLURRY IN WATER, CONTAINING OXYGEN, OF POWDERED SOLID CRYSTALLINE POLYMER OF AN ALIPHATIC MONO-ALPHA-OLEFIN, PREPARED BY A LOW PRESSURE PROCESS, AT A TEMPERATURE OF FROM
References Cited (Backward Citations)
CA476476A
Cited
US3110708A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-31 | 1969-08-02 | 1970-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-31 | 1973-08-02 | 1974-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-31 | 1977-08-02 | 1978-02-01 | $7700.00 | Window Closed / Lapsed |