US2953542A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized polymer compositions
Assignee: Hoechst AG
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Filing: 1956-12-11
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Granted: 1960-09-20
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Expires: 1976-12-11
Abstract
No abstract record available.
Inventors
- 👤 Stark Ernst
- 👤 Albrecht Manfred
- 👤 Keicher Georg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:15
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/09; C08K5/098; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K5/36; C08K5/37
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
37 words
AS A NEW COMPOSITION OF MATTER, POLYETHYLENE CONTAINING AS AN ADDITIVE BETWEEN 0.003-4% BY WEIGHT OF ISOBORNYL-BETA-THIONAPHTHOL, THE LATTER SERVING TO INHIBIT THE EMBRITTLEMENT OF THE POLYETHYLENE DUE TO AGEING WITHOUT IMPAIRING ITS ELECTRICAL PROPERTIES OR COLOR.
Claim 2
Dependent Claim
37 words
AS A NEW COMPOSITION OF MATTER, POLYETHYLENE CONTAINING AS AN ADDITIVE BETWEEN 0.003-4% BY WEIGHT OF ISOBORNYL-BETA-THIONAPHTHOL, THE LATTER SERVING TO INHIBIT THE EMBRITTLEMENT OF THE POLYETHYLENE DUE TO AGEING WITHOUT IMPAIRING ITS ELECTRICAL PROPERTIES OR COLOR.
Claim 3
Dependent Claim
37 words
AS A NEW COMPOSITION OF MATTER, POLYETHYLNE CONTAINING 0.003-4% ISOBORNYL-BETA-THIONAPHTOL AND 0.011% BY WEIGHT OF CALCIUM OXIDE, THESE ADDITIVES SERVING TO INHIBIT THE EMBRITTLEMENT OF THE POLYETHYLENE DUE TO AGEING WITHOUT IMPAIRING ITS ELECTRICAL PROPERTIES OR COLOR.
Claim 4
Dependent Claim
37 words
AS A NEW COMPOSITION OF MATTER, POLYETHYLNE CONTAINING 0.003-4% ISOBORNYL-BETA-THIONAPHTOL AND 0.011% BY WEIGHT OF CALCIUM OXIDE, THESE ADDITIVES SERVING TO INHIBIT THE EMBRITTLEMENT OF THE POLYETHYLENE DUE TO AGEING WITHOUT IMPAIRING ITS ELECTRICAL PROPERTIES OR COLOR.
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) | 1963-09-20 | 1964-03-21 | 1964-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-20 | 1968-03-21 | 1968-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-20 | 1972-03-21 | 1972-09-20 | $7700.00 | Window Closed / Lapsed |