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US3494898A
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US
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Polymerization of olefinic compounds and polymerization catalyst
Assignee: HEINZ W MEYER
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Filing: 1969-04-10
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Granted: 1970-02-10
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Expires: 1989-04-10
Abstract
No abstract record available.
Inventors
- 👤 Heinz W Meyer
- 👤 Heinz Winter
- 👤 Dieter Schmid
- 👤 Hans Schwarzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:56
CPC Classifications
C; C08; C08F; C08F4/00; C08F4/28; C08F4/32; C07; C07C; C07C409/00; C07C409/38; C08F283/00; C08F283/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2567615A
Cited
US3138627A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-09 | 1973-08-11 | 1974-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-09 | 1977-08-11 | 1978-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-09 | 1981-08-11 | 1982-02-10 | $7700.00 | Window Closed / Lapsed |