US3539636A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat- and light-stabilized molding composition based on vinyl chloride polymers containing organotin stabilizers and process for making said stabilizers
Assignee: Hoechst AG
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Filing: 1967-06-14
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Granted: 1970-11-10
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Expires: 1987-06-14
Abstract
No abstract record available.
Inventors
- 👤 Christoph Dorfelt
- 👤 Hans-Joachim Andraschek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:30
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/22; C08; C08K; C08K5/00; C08K5/56; C08K5/57; C08K5/58
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2628211A
Cited
US2763632A
Cited
US3021302A
Cited
US3198757A
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US3213119A
Cited
US3413264A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-09 | 1974-05-11 | 1974-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-09 | 1978-05-11 | 1978-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-09 | 1982-05-11 | 1982-11-10 | $7700.00 | Window Closed / Lapsed |