Patent US3595838A successfully refreshed from Google Patents.
US3595838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethane coating compositions
Assignee: Takeda Pharmaceutical Co Ltd
•
Filing: 1968-05-22
•
Granted: 1971-07-27
•
Expires: 1988-05-22
Abstract
Abstract THE COMPOSITIONS OF THE DISCLOSURE COMPRISES (1) A POLYESTER POLYOL AND (2) AN ISOCYANATE COMPONENT. BY USING, AS ISOCYANATE COMPONENT, AN ADDUCT OF TRIMETHYLOLPROPANE AND DIMETHYLBENZENE-W,W''-DIISOCYANATE (XDI) IN SPECIFIED MOLAR RATIO (1:7 TO 1:16) AND ESSENTIALLY FREE FROM UNREACTED XDI, IT IS POSSIBLE TO PRODUCE A TWOCAN TYPE POLYURETHANE COATING COMPOSITION HAVING SUPERIOR WEATHERING RESISTANCE AND EXCELLENT MECHANICAL PROPERTIES. DETAILS OF DESIRABLE POLYESTER POLYOL COMPONENTS, WHICH CONTRIBUTE IMPROVED CORROSION RESISTANCE TO THE COATING, ARE ALSO DISCLOSED.
Inventors
- 👤 Akira Ogino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:35
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/62; C08G18/6216; C08G18/622; C08G18/6225; C08G18/6229; C08G18/42; C08G18/4288; C08G18/70; C08G18/72; C08G18/80; C08G18/8003; C08G18/8006; C08G18/8009; C08G18/8022; C08G18/8029; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |