Patent US3553249A successfully refreshed from Google Patents.
US3553249A
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Novel cyclic unsaturated isocyanates
Assignee: Union Carbide Corp
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Filing: 1965-08-09
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Granted: 1971-01-05
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Expires: 1985-08-09
Abstract
Abstract ISOCYANATE COMPOSITION RESULTING FROM THE REACTION OF ISOCYANATES WITH COMPOUNDS HAVING AN ACTIVE HYDROGEN. THE POLYMER CONTAINS A PLURALITY OF PENDANT ISOCYANATO GROUPS.
Inventors
- 👤 Thomas K Brotherton
- 👤 John W Lynn
- 👤 Robert J Knopf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:13
CPC Classifications
C; C07; C07D; C07D493/00; C07D493/02; C07D493/08; C07C; C07C263/00; C07C263/16; C07C265/00; C07C265/02; C07C265/04; C08; C08F; C08F22/00; C08F22/10; C08F22/12; C08F22/22; C08G; C08G18/00; C08G18/02; C08G18/04; C08G18/06; C08G18/70; C08G18/72; C08G18/728; C08G18/74; C08G18/75; C08G18/758; C08G18/77; C08G18/771; C08G18/773; C08G18/81; C08G18/8125; C08G18/8141; C08J; C08J9/00; C08J9/04; D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/564; Y; Y10; Y10S; Y10S528/00; Y10S528/905; Y10S528/906
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |