Patent US2817643A successfully refreshed from Google Patents.
US2817643A
Expired / Lapsed
US
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Mixed polyurethane lacquer and method of coating therewith
Assignee: Bayer AG
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Filing: 1955-09-15
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Granted: 1957-12-24
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Expires: 1975-09-15
Abstract
No abstract record available.
Inventors
- 👤 Altner Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:58
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/32; C08G18/3203; C08G18/3206; C09; C09D; C09D175/00; C09D175/04; Y; Y10; Y10S; Y10S528/00; Y10S528/902
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A LACQUER COMPRISING AN ORGANIC SOLVENT SOLUBLE LINER POLYURETHANE PREPARED BY REACTING AN ORGANIC ALIPHATIC DIISCOCYANATE WITH A GLYCOL SELECTED FROM THE GROUP CONSISTING OF A GLYCOL IN WHICH THE HYDROXYL GROUPS ARE ATTACHED TO THE BETA AND OMEGA CATBON ATOMS AND A GLYCOL IN WHICH THE HYDROXYL GROUPS ARTE ATTACHED TO THE CARBON ATOMS NEXT ADJACENT TO THE TERMINALCARBON ATOMS DISSOLVED IN AN ORGANIC SOLVENT THEREFOR, AND PARTICLES OF A LINEAR POLYURETHANE PREPARED BY REACTING AN ORGANIC ALIPHATIC DIISOCYANATE WITH A GLYOL IN WHICH THE HYDROXYL GROUPS ARE ATTACHED TO THE ALPHA AND OMEGA CARBON ATOMS AND INSOLUBLE IN SAID SOLVENT.
Claim 2
Dependent Claim
102 words
A LACQUER COMPRISING AN ORGANIC SOLVENT SOLUBLE LINER POLYURETHANE PREPARED BY REACTING AN ORGANIC ALIPHATIC DIISCOCYANATE WITH A GLYCOL SELECTED FROM THE GROUP CONSISTING OF A GLYCOL IN WHICH THE HYDROXYL GROUPS ARE ATTACHED TO THE BETA AND OMEGA CATBON ATOMS AND A GLYCOL IN WHICH THE HYDROXYL GROUPS ARTE ATTACHED TO THE CARBON ATOMS NEXT ADJACENT TO THE TERMINALCARBON ATOMS DISSOLVED IN AN ORGANIC SOLVENT THEREFOR, AND PARTICLES OF A LINEAR POLYURETHANE PREPARED BY REACTING AN ORGANIC ALIPHATIC DIISOCYANATE WITH A GLYOL IN WHICH THE HYDROXYL GROUPS ARE ATTACHED TO THE ALPHA AND OMEGA CARBON ATOMS AND INSOLUBLE IN SAID SOLVENT.
References Cited (Backward Citations)
US2531392A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-23 | 1961-06-24 | 1961-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-23 | 1965-06-24 | 1965-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-23 | 1969-06-24 | 1969-12-24 | $7700.00 | Window Closed / Lapsed |