Patent US5684173A successfully refreshed from Google Patents.
US5684173A
Expired / Lapsed
US
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Organosilicon compound and ziegler-natta catalyst containing the same
Assignee: Toho Titanium Co Ltd
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Filing: 1995-01-31
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Granted: 1997-11-04
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Expires: 2015-01-31
Abstract
Abstract An organosilicon compound represented by formula (I) ##STR1## wherein R 1 and R 2 which may be the same or different, each represents an alkyl group having 1 to 3 carbon atoms. The organosilicon compound is used as en effective electron donor ingredient of a Ziegler-Natta catalyst for olefin polymerization.
Inventors
- 👤 Motoki Hosaka
- 👤 Kenji Goto
- 👤 Masahiko Matsuo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:39
CPC Classifications
C; C08; C08F; C08F10/00; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1804; C08F110/00; C08F110/04; C08F110/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
1 words
Cyclohexylcyclopentyldimethoxysilane.
Claim 2
Dependent Claim
1 words
Cyclohexylcyclopentyldimethoxysilane.
References Cited (Backward Citations)
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Cited
US4906695A
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US5248803A
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US5175332A
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US5494872A
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US5308818A
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US5498770A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-11-03 | 2001-05-05 | 2001-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-11-03 | 2005-05-05 | 2005-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-11-03 | 2009-05-05 | 2009-11-04 | $7700.00 | Window Closed / Lapsed |