US3202629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cross-linked composition of polyethylene with pigment of the group consisting of lithopone and antimony oxide
Assignee: Ericsson Inc
•
Filing: 1959-04-17
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Granted: 1965-08-24
•
Expires: 1979-04-17
Abstract
No abstract record available.
Inventors
- 👤 Ling Ting Hung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:57
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/30; C08K3/18; C08K3/20; C08K5/00; C08K5/04; C08K5/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
THE PROCESS OF PREPARING A COMPOSITION OF POLYETHYLENE AND A PIGMENT OF THE GROUP CONSISTING OF LITHOPONE AND ANTIMONY OXIDE IN WHICH THE POLYETHYLENE CHAINS ARE CROSS-LINKED BOTH WITH THEMSELVES AND WITH SAID PIGMENT WHICH COMPRISES INTIMATELY MIXING TOGETHER FROM ABOUT 20% TO ABOUT 80% BY WEIGHT OF POLYETHYLENE, CORRESPONDINGLY FROM ABOUT 20% TO ABOUT 80% BY WEIGHT OF SAID PIGMENT, AND FROM ABOUT 0.5% TO ABOUT 5% BY WEIGHT OF AN ORGANIC FREE RADICAL GENERATING PEROXIDE, AND HEATING THE RESULTING MIXTURE TO A TEMPERATURE ABOVE THE DECOMPOSITION TEMPERATURE OF SAID PEROXIDE, WHEREBY FREE RRRADICALS ARE GENERATED WITHIN THE MIXTURE AND CROSSLINKING OF THE POLYETHYLENE CHAINS BOTH WITH THEMSELVES AND WITH THE PIGMENT ENSURES AND A COMPOSITION WHICH IS THERMALLY STABLE FOR A SUBSTANTIAL PERIOD OF TIME AT 260*C. IS PRODUCED.
Claim 2
Dependent Claim
131 words
THE PROCESS OF PREPARING A COMPOSITION OF POLYETHYLENE AND A PIGMENT OF THE GROUP CONSISTING OF LITHOPONE AND ANTIMONY OXIDE IN WHICH THE POLYETHYLENE CHAINS ARE CROSS-LINKED BOTH WITH THEMSELVES AND WITH SAID PIGMENT WHICH COMPRISES INTIMATELY MIXING TOGETHER FROM ABOUT 20% TO ABOUT 80% BY WEIGHT OF POLYETHYLENE, CORRESPONDINGLY FROM ABOUT 20% TO ABOUT 80% BY WEIGHT OF SAID PIGMENT, AND FROM ABOUT 0.5% TO ABOUT 5% BY WEIGHT OF AN ORGANIC FREE RADICAL GENERATING PEROXIDE, AND HEATING THE RESULTING MIXTURE TO A TEMPERATURE ABOVE THE DECOMPOSITION TEMPERATURE OF SAID PEROXIDE, WHEREBY FREE RRRADICALS ARE GENERATED WITHIN THE MIXTURE AND CROSSLINKING OF THE POLYETHYLENE CHAINS BOTH WITH THEMSELVES AND WITH THE PIGMENT ENSURES AND A COMPOSITION WHICH IS THERMALLY STABLE FOR A SUBSTANTIAL PERIOD OF TIME AT 260*C. IS PRODUCED.
References Cited (Backward Citations)
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Cited
US2561063A
Cited
US2480298A
Cited
US2876133A
Cited
US2888424A
Cited
US2830919A
Cited
US2997452A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |