US3234176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stress-crack resistant polyethylene compositions
Assignee: Union Carbide Canada Ltd
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Filing: 1959-12-03
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Granted: 1966-02-08
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Expires: 1979-12-03
Abstract
No abstract record available.
Inventors
- 👤 George L Bata
- 👤 Jack W Donaghy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:14
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/02; C08K3/04; C08K7/00; C08K7/16; C08K7/18; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/06; C08L61/00; C08L61/04; C08L61/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
POLYETHYLENE CHARACTERIZED BY RESISTANCE TO STRESSCRACKING CONSISTING ESSENTIALLY OF A NORMALLY SOLID POLYETHYLENE IN ADMIXTURE WITH FROM 1.5 THROUGH 12 PERCENT BY WEIGHT OF SAID POLYETHYLENE OF A DRYING OIL SOLUBLE PHENOL-FORMALDEHYDE RESINOUS CONDENSATION PRODUCT AND IN FURTHER ADMIXTURE WITH A LEAST ONE ADDITIVE SELECTED FROM THE GROUP CONSISTING OF A QUANTITY OF CARBON BLACK EQUAL TO FROM 1 THROUGH 6 PERCENT BY WEIGHT OF THE QUANTITY OF SAID POLYETHYLENE AND A QUANTITY OF A DIPHENYL AMINE EQUAL TO AT LEAST 0.001 PERCENT BY WEIGHT OF THE QUANTITY OF SAID POLYETHYLENE.
Claim 2
Dependent Claim
91 words
POLYETHYLENE CHARACTERIZED BY RESISTANCE TO STRESSCRACKING CONSISTING ESSENTIALLY OF A NORMALLY SOLID POLYETHYLENE IN ADMIXTURE WITH FROM 1.5 THROUGH 12 PERCENT BY WEIGHT OF SAID POLYETHYLENE OF A DRYING OIL SOLUBLE PHENOL-FORMALDEHYDE RESINOUS CONDENSATION PRODUCT AND IN FURTHER ADMIXTURE WITH A LEAST ONE ADDITIVE SELECTED FROM THE GROUP CONSISTING OF A QUANTITY OF CARBON BLACK EQUAL TO FROM 1 THROUGH 6 PERCENT BY WEIGHT OF THE QUANTITY OF SAID POLYETHYLENE AND A QUANTITY OF A DIPHENYL AMINE EQUAL TO AT LEAST 0.001 PERCENT BY WEIGHT OF THE QUANTITY OF SAID POLYETHYLENE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |