US3015644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilizing polypropylene with organictin-mercapto compounds
Assignee: Argus Chemical Corp
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Filing: 1958-01-31
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Granted: 1962-01-02
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Expires: 1978-01-31
Abstract
No abstract record available.
Inventors
- 👤 William E Leistner
- 👤 Olga H Knoepker
- 👤 Arthur C Hecker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:07
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/56; C08K5/57; C08K5/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
POLYPORPYLENE SUBSTANTIALLY FREE FROM HALIDE COMBINED WITH A STABILIZING AMOUNT OF A TIM MERCAPTO COMPOUND WHICH IS NONVOLATILE AND COMPATIBLE WITH POLYPROYLENE, HAVING THE FORMULA:
Claim 2
Dependent Claim
25 words
POLYPORPYLENE SUBSTANTIALLY FREE FROM HALIDE COMBINED WITH A STABILIZING AMOUNT OF A TIM MERCAPTO COMPOUND WHICH IS NONVOLATILE AND COMPATIBLE WITH POLYPROYLENE, HAVING THE FORMULA:
References Cited (Backward Citations)
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US2759906A
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Cited
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US2834768A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-01 | 1965-07-03 | 1966-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-01 | 1969-07-03 | 1970-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-01 | 1973-07-03 | 1974-01-02 | $7700.00 | Window Closed / Lapsed |