Patent US4432750A successfully refreshed from Google Patents.
Patent US3639355A successfully refreshed from Google Patents.
US3639355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethane coating compositions having improved viscosity characteristics
Assignee: Honeywell International Inc
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Filing: 1968-10-08
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Granted: 1972-02-01
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Expires: 1988-10-08
Abstract
Abstract NOVEL POLYURETHANE COATING COMPOSITIONS CHARACTERIZED BY EXCELLENT CURING PROPERTIES AND LOW VISCOSITIES ARE PREPARED FROM 4,4''-METHYLENE BIS (CYCLOHEXYL ISOCYANATE) AND MIXTURES OF POLYETHER TRIOLS.
Inventors
- 👤 George S Wooster
- 👤 Frank M Delgado
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:30
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/46; H01R13/502; A; A61; A61L; A61L29/00; A61L29/08; A61L29/085; C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/4804; C08G18/4816; C08G18/70; C08G18/72; C08G18/74; C08G18/75; C08G18/758
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-31 | 1975-08-02 | 1976-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-31 | 1979-08-02 | 1980-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-31 | 1983-08-02 | 1984-02-01 | $7700.00 | Window Closed / Lapsed |