US3261804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions comprising unirradiated and irradiated mixtures of a polyolefin and a thiophosphate ester and the method of irradiating the composition
Assignee: WR Grace and Co
•
Filing: 1959-01-30
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Granted: 1966-07-19
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Expires: 1979-01-30
Abstract
No abstract record available.
Inventors
- 👤 Graham Bruce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:09
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/5398; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/06; C08L2207/00; C08L2207/06; C08L2207/066
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
37 words
A COMPOSITION COMPRISING A MIXTURE OF A SOLID POLYMER OF AN OLEFIN HAVING 2 TO 3 CARBON ATOMS AND A MINOR AMOUNT OF A THIOPHOSPHATE ESTER, THE AMOUNT OF SAID ESTER BEING SUFFICIENT TO STABILIZE SAID POLYMER.
Claim 2
Dependent Claim
37 words
A COMPOSITION COMPRISING A MIXTURE OF A SOLID POLYMER OF AN OLEFIN HAVING 2 TO 3 CARBON ATOMS AND A MINOR AMOUNT OF A THIOPHOSPHATE ESTER, THE AMOUNT OF SAID ESTER BEING SUFFICIENT TO STABILIZE SAID POLYMER.
Claim 3
Dependent Claim
26 words
A COMPOSITION COMPRISING IRRADIATED POLYETHYLENE AND A TRIARYL THIOPHOSPHATE IN AN AMOUNT OF 0.001% TO 10% BY WEIGHT OF THE TOTAL OF THE POLYETHYLENE AND THIO-
Claim 4
Dependent Claim
26 words
A COMPOSITION COMPRISING IRRADIATED POLYETHYLENE AND A TRIARYL THIOPHOSPHATE IN AN AMOUNT OF 0.001% TO 10% BY WEIGHT OF THE TOTAL OF THE POLYETHYLENE AND THIO-
Claim 5
Dependent Claim
41 words
A PROCESS COMPRISING IRRADIATING POLYETHYLENE AND A TRIARYL THIOPHOSPHATE IN AN AMOUNT OF 0.001% TO 10% BY WEIGHT OF THE TOTAL OF THE POLYETHYLENE AND THE THIOPHOSPHATE WITH A DOSAGE OF BETWEEN 1 X 10**5 REP AND 1 X 10**8 REP.
Claim 6
Dependent Claim
41 words
A PROCESS COMPRISING IRRADIATING POLYETHYLENE AND A TRIARYL THIOPHOSPHATE IN AN AMOUNT OF 0.001% TO 10% BY WEIGHT OF THE TOTAL OF THE POLYETHYLENE AND THE THIOPHOSPHATE WITH A DOSAGE OF BETWEEN 1 X 10**5 REP AND 1 X 10**8 REP.
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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) | 1969-07-18 | 1970-01-17 | 1970-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-18 | 1974-01-17 | 1974-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-18 | 1978-01-17 | 1978-07-19 | $7700.00 | Window Closed / Lapsed |