US3652508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Viscosity stable aliphatic polyurethane compositions and method of preparation thereof
Assignee: General Latex and Chemical Corp
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Filing: 1969-04-07
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Granted: 1972-03-28
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Expires: 1989-04-07
Abstract
Abstract VISCOSITY-STABLE ALIPHATIC POLYURETHANE RESIN COMPOSITIONS ARE PREPARED BY REACTING AN ALKYLENE OXIDE WITH MOISTURE PRESENT IN THE ORGANIC POLYFUNCTIONAL COMPOUND PRIOR TO THE REACTION OF THE COMPOUND, SUCH AS A POLYOL, WITH THE ALIPHATIC POLYISOCYANATE COMPOUNDS TO PREPARE THE ALIPHATIC POLYURETHANE RESIN.
Inventors
- 👤 Donald L Segur
- 👤 Harold E Garey Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:28
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/088; C08G18/0885; Y; Y10; Y10S; Y10S528/00; Y10S528/903
Claims Analysis
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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) | 1975-03-28 | 1975-09-27 | 1976-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-28 | 1979-09-27 | 1980-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-28 | 1983-09-27 | 1984-03-28 | $7700.00 | Window Closed / Lapsed |