US2727693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for converting fused polyethylene into a powder
Assignee: Monsanto Chemicals Ltd
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Filing: 1954-01-22
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Granted: 1955-12-20
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Expires: 1974-01-22
Abstract
No abstract record available.
Inventors
- 👤 Robert E Cairns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:06
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/12; B; B29; B29B; B29B9/00; C08J2323/00; C08J2323/02; C08J2323/04; C08J2323/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A PROCESS FOR CONVERTING FUSED POLYETHYLENE INTO A POWDER WHICH COMPRISES SUBJECTING THE POLYETHYLENE TO INTENSIVE MIXING IN A CLOSED CHAMBER UNDER POSITIVE PRESSURE, THE MIXING ACTION BEING APPLIED BY A PLURALITY OF ROTATING MEMBERS TURNING AT DIFFERENT PERIPHERAL SPEEDS, SAID INTENSIVE MIXING BEING CONTROLLED BY THE FOLLOWING CYCLE DURING WHICH THE ROTATING MEMBERS AND THE WALLS OF THE CHAMBER ARE KEPT COOL BY CIRCULATING WATER AT TEMPERATURES OF FROM 35 TO 80* F. WITHIN SAID ROTATING MEMBERS AND WALLS;
Claim 2
Dependent Claim
80 words
A PROCESS FOR CONVERTING FUSED POLYETHYLENE INTO A POWDER WHICH COMPRISES SUBJECTING THE POLYETHYLENE TO INTENSIVE MIXING IN A CLOSED CHAMBER UNDER POSITIVE PRESSURE, THE MIXING ACTION BEING APPLIED BY A PLURALITY OF ROTATING MEMBERS TURNING AT DIFFERENT PERIPHERAL SPEEDS, SAID INTENSIVE MIXING BEING CONTROLLED BY THE FOLLOWING CYCLE DURING WHICH THE ROTATING MEMBERS AND THE WALLS OF THE CHAMBER ARE KEPT COOL BY CIRCULATING WATER AT TEMPERATURES OF FROM 35 TO 80* F. WITHIN SAID ROTATING MEMBERS AND WALLS;
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) | 1958-12-19 | 1959-06-20 | 1959-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-19 | 1963-06-20 | 1963-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-19 | 1967-06-20 | 1967-12-20 | $7700.00 | Window Closed / Lapsed |