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US2543329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyethylene stabilized with diphenylamine
Assignee: Union Carbide Corp
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Filing: 1945-03-17
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Granted: 1951-02-27
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Expires: 1965-03-17
Abstract
No abstract record available.
Inventors
- 👤 Clayton S Myers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:59
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/17; C08K5/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
COMPOUND OF POLYMERIZED ETHYLENE AND A FRACTION OF ONE PER CENT OF DIPHENYLAMINE, SAID COMPOSITION BEING CHARACTERIZED BY SUBSTANTIAL STABILITY AS MEASURED BY POWER FACTOR UPON AGING IN AN ATMOSPHERE CONTAINING OXYGEN AND BY SUBSTANTIAL ABSENCE OF COLOR AND OF COLOR CHANGE UNDER THERMAL TREATMENT.
Claim 2
Dependent Claim
45 words
COMPOUND OF POLYMERIZED ETHYLENE AND A FRACTION OF ONE PER CENT OF DIPHENYLAMINE, SAID COMPOSITION BEING CHARACTERIZED BY SUBSTANTIAL STABILITY AS MEASURED BY POWER FACTOR UPON AGING IN AN ATMOSPHERE CONTAINING OXYGEN AND BY SUBSTANTIAL ABSENCE OF COLOR AND OF COLOR CHANGE UNDER THERMAL TREATMENT.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-26 | 1954-08-28 | 1955-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-26 | 1958-08-28 | 1959-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-26 | 1962-08-28 | 1963-02-27 | $7700.00 | Window Closed / Lapsed |