US3242159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of linear polyethylene
Assignee: Pullman Inc
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Filing: 1961-11-27
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Granted: 1966-03-22
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Expires: 1981-11-27
Abstract
No abstract record available.
Inventors
- 👤 Herman S Kaufman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:11
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/02; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/08; C08L23/0807; C08L23/0815; C08K5/00; C08K5/04; C08K5/14; C08L2205/00; C08L2205/02; C08L2312/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A METHOD WHICH COMPRISES CROSS-LINKING LINEAR POLYETHYLENE HAVING A DENSITY OF AT LEAST 0.93 G./CC. WITH A CROSS-LINKING AGENT SELECTED FROM THE GROUP CONSISTING OF OXYGEN AND AIR BY HEATING THE LINEAR POLYETHYLENE BELOW ITS TRANSITION TEMPERATURE IN AN ATMOSPHERE OF THE CROSSLINKING AGENT AND THEN REHEATING THE CROSS-LINKED POLYETHYLENE TO A TEMPERATURE ABOVE ITS TRANSITION TEMPERATURE TO PRODUCE A FLEXIBLE PRODUCT.
Claim 2
Independent Claim
62 words
A METHOD WHICH COMPRISES CROSS-LINKING LINEAR POLYETHYLENE HAVING A DENSITY OF AT LEAST 0.93 G./CC. WITH A CROSS-LINKING AGENT SELECTED FROM THE GROUP CONSISTING OF OXYGEN AND AIR BY HEATING THE LINEAR POLYETHYLENE BELOW ITS TRANSITION TEMPERATURE IN AN ATMOSPHERE OF THE CROSSLINKING AGENT AND THEN REHEATING THE CROSS-LINKED POLYETHYLENE TO A TEMPERATURE ABOVE ITS TRANSITION TEMPERATURE TO PRODUCE A FLEXIBLE PRODUCT.
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) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |