Patent US3506633A successfully refreshed from Google Patents.
US3506633A
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US
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Catalysts in olefin polymerization
Assignee: Mitsubishi Chemical Corp
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Filing: 1966-03-08
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Granted: 1970-04-14
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Expires: 1986-03-08
Abstract
No abstract record available.
Inventors
- 👤 Ryo Matsuura
- 👤 Shigeo Kamimura
- 👤 Koichiro Iwasaki
- 👤 Kazuo Yamaguchi
- 👤 Jihei Inomata
- 👤 Genjiro Kakogawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:16
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/06; B01J21/063; B01J21/02; B01J21/04; C; C01; C01F; C01F7/00; C01F7/02; C01F7/34; C01F7/36; C01F7/44; C01F7/441; C01F7/442; C08; C08F; C08F10/00; C01P; C01P2002/00; C01P2002/02; C01P2004/00; C01P2004/60; C01P2004/61; C01P2006/00; C01P2006/12; C01P2006/14
Claims Analysis
Total Claims: 0
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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) | 1973-04-13 | 1973-10-13 | 1974-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-13 | 1977-10-13 | 1978-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-13 | 1981-10-13 | 1982-04-14 | $7700.00 | Window Closed / Lapsed |