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Patent US3466251A successfully refreshed from Google Patents.
US3466251A
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US
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Process for polymerizing an epoxy compound in the presence of carbon dioxide
Assignee: Sumitomo Seika Chemicals Co Ltd
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Filing: 1966-09-02
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Granted: 1969-09-09
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Expires: 1986-09-02
Abstract
No abstract record available.
Inventors
- 👤 Kenichi Fukui
- 👤 Tsutomu Kagiya
- 👤 Hisao Yokota
- 👤 Misato Horie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:06
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/04; C08G65/06; C08G65/08; C08G65/10; C08G65/12; C08G65/26; C08G65/2642; C08G65/2645
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3100750A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-08 | 1973-03-10 | 1973-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-08 | 1977-03-10 | 1977-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-08 | 1981-03-10 | 1981-09-09 | $7700.00 | Window Closed / Lapsed |