US3036981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for rendering a cross-linked carbon black-containing polyethylene extrudableand resulting product
Assignee: Hercules Powder Co
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Filing: 1957-12-31
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Granted: 1962-05-29
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Expires: 1977-12-31
Abstract
No abstract record available.
Inventors
- 👤 Walter S Ropp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:17
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/02; C08K3/04; C08K5/00; C08K5/04; C08K5/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
THE PROCESS WHICH COMPRISES MECHANICALLY WORKING A CROSS-LINKED POLYETHYLENE COMPOSITION COMPRISING POLYETHYLENE, CARBON BLACK IN AN AMOUNT IN THE RANGE OF 1030% OF THE WEIGHT OF THE POLYETHYLENE, AND A PEROXIDE IN AN AMOUNT IN THE RANGE OF 0.1-20% OF THE WEIGHT OF THE POLYETHYLENE, SAID PEROXIDE HAVING THE FORMULA
Claim 2
Dependent Claim
50 words
THE PROCESS WHICH COMPRISES MECHANICALLY WORKING A CROSS-LINKED POLYETHYLENE COMPOSITION COMPRISING POLYETHYLENE, CARBON BLACK IN AN AMOUNT IN THE RANGE OF 1030% OF THE WEIGHT OF THE POLYETHYLENE, AND A PEROXIDE IN AN AMOUNT IN THE RANGE OF 0.1-20% OF THE WEIGHT OF THE POLYETHYLENE, SAID PEROXIDE HAVING THE FORMULA
References Cited (Backward Citations)
GB635912A
Cited
GB564514A
Cited
US2461193A
Cited
US2876133A
Cited
US2888424A
Cited
US2826570A
Cited
US2832748A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-28 | 1965-11-27 | 1966-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-28 | 1969-11-27 | 1970-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-28 | 1973-11-27 | 1974-05-29 | $7700.00 | Window Closed / Lapsed |