US3522228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel method for polymerizing a vinyl compound in the presence of a carbon dioxide medium
Assignee: Sumitomo Chemical Co Ltd
•
Filing: 1967-05-15
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Granted: 1970-07-28
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Expires: 1987-05-15
Abstract
No abstract record available.
Inventors
- 👤 Kenichi Fukui
- 👤 Tsutomu Kagiya
- 👤 Hisao Yokota
- 👤 Yahiko Toriuchi
- 👤 Kuniyoshi Fujii
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:58
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/04; C08F2/06; B; B01; B01J; B01J3/00; B01J3/008; C08F14/00; C08F14/02; C08F14/04; C08F14/06; Y; Y10; Y10S; Y10S526/00; Y10S526/942
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB835121A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-27 | 1974-01-26 | 1974-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-27 | 1978-01-26 | 1978-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-27 | 1982-01-26 | 1982-07-28 | $7700.00 | Window Closed / Lapsed |