US3296188A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyolefin compositions stabilized with hydrazones
Assignee: Shell USA Inc
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Filing: 1964-01-10
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Granted: 1967-01-03
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Expires: 1984-01-10
Abstract
No abstract record available.
Inventors
- 👤 Kurt W Leu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:16
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/29; C08K5/30; C08K5/04; C08K5/13; C08K5/36; C08K5/37; C08K5/372
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A POLYOLEFIN COMPOSITION STABILIZED AGAINST DEGRADATION WHEN IN CONTACT WITH COPPER COMPRISING (1) A SOLID POLYMER OF AN ALPHA-MONOOLEFIN OF FROM 2 TO 8 CARBON ATOMS PER MOLECULE COMBINED WITH (2) A COMBINATION OF INHIBITORS AGAINST DEGRADATION THEREOF CONSISTING OF; (A) FROM 0.01% TO 5% BY WEIGHT WITH REFERENCE TO THE POLYMER OF A HYDRAZONE HAVING THE FORMULA
Claim 2
Dependent Claim
58 words
A POLYOLEFIN COMPOSITION STABILIZED AGAINST DEGRADATION WHEN IN CONTACT WITH COPPER COMPRISING (1) A SOLID POLYMER OF AN ALPHA-MONOOLEFIN OF FROM 2 TO 8 CARBON ATOMS PER MOLECULE COMBINED WITH (2) A COMBINATION OF INHIBITORS AGAINST DEGRADATION THEREOF CONSISTING OF; (A) FROM 0.01% TO 5% BY WEIGHT WITH REFERENCE TO THE POLYMER OF A HYDRAZONE HAVING THE FORMULA
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) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |