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US3457197A
Expired / Lapsed
US
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Polymerization of epihalohydrins alone or with oxirane compounds
Assignee: Phillips Petroleum Co
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Filing: 1968-02-23
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Granted: 1969-07-22
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Expires: 1988-02-23
Abstract
No abstract record available.
Inventors
- 👤 Henry L Hsieh
- 👤 Francis X Mueller Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:48
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/04; C08G65/22; C08G65/24; C08G65/06; C08G65/08; C08G65/10; C08G65/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3135705A
Cited
US3379660A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-21 | 1973-01-20 | 1973-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-21 | 1977-01-20 | 1977-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-21 | 1981-01-20 | 1981-07-22 | $7700.00 | Window Closed / Lapsed |