US2531392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethan coating compositions
Assignee: Hercules Powder Co
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Filing: 1948-09-08
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Granted: 1950-11-28
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Expires: 1968-09-08
Abstract
No abstract record available.
Inventors
- 👤 David S Breslow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:52
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/32; C08G18/3203; C08G18/3206; Y; Y10; Y10S; Y10S273/00; Y10S273/08; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/31504; Y10T428/31678; Y10T428/31692
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A COATING COMPOSITION COMPRISING THE REACTION PRODUCT OF A MIXTURE OF ISOCYANATES, COMPRISING TOLUENE TRIISOCYANATE AND AN ORGANIC DIISOCYANATE IN A MOLAR RATIO OF ABOUT 1:9 TO ABOUT 9:1, WITH THE THEORETICAL AMOUNT OF A GLYCOL, SAID GLYCOL AND ORGANIC DIISOCYANATE CONTAINING HYDROXYL AND ISOCYANATE GROUPS, RESPECTIVELY, AS THE SOLE REACTIVE SUBSTITUENTS.
Claim 2
Dependent Claim
52 words
A COATING COMPOSITION COMPRISING THE REACTION PRODUCT OF A MIXTURE OF ISOCYANATES, COMPRISING TOLUENE TRIISOCYANATE AND AN ORGANIC DIISOCYANATE IN A MOLAR RATIO OF ABOUT 1:9 TO ABOUT 9:1, WITH THE THEORETICAL AMOUNT OF A GLYCOL, SAID GLYCOL AND ORGANIC DIISOCYANATE CONTAINING HYDROXYL AND ISOCYANATE GROUPS, RESPECTIVELY, AS THE SOLE REACTIVE SUBSTITUENTS.
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) | 1953-11-27 | 1954-05-29 | 1954-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-27 | 1958-05-29 | 1958-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-27 | 1962-05-29 | 1962-11-28 | $7700.00 | Window Closed / Lapsed |