US3211704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ether linked polyisocyanurate prepared from an organic diisocyanate and an organic monoisocyanate in presence of a cocatalyst system
Assignee: Monsanto Research Corp
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Filing: 1962-10-31
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Granted: 1965-10-12
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Expires: 1982-10-31
Abstract
No abstract record available.
Inventors
- 👤 Lucius G Gilman
- 👤 Morton H Gollis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:29
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/02; C08G18/022; Y; Y10; Y10S; Y10S521/00; Y10S521/902; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31547; Y10T442/00; Y10T442/30; Y10T442/3472; Y10T442/3528; Y10T442/3594
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A SOLID, TOUGH POLYISOCYANURATE WITH OXIDATIVE THERMAL STABILITY, CONTAINING AT LEAST ABOUT 25 DIFUNCTIONAL ORGANIC SUBSTITUTED ISOCYANURATE RINGS JOINED IN A CONTINUOUS STRUCTURE BY DIVALENT PHENOXYPHENYL RADICALS AND HAVING A MONOVALENT ARYL RADICAL SUBSTITUENT, AND CONTAINING TRIFUNCTIONAL ORGANIC SUBSTITUTED ISOCYANURATE RINGS IN AN AMOUNT OF UP TO 10 TIMES THE AMOUNT OF SAID DIFUNCTIONAL RINGS, WHEREIN THE ORGANIC SUBSTITUENTS OF THE SAID TRIFUNCTIONAL RINGS ARE DIVALENT PHENOXYPHENYL RADICALS, SAID POLYMER CONTAINING THE STRUCTURAL UNITS
Claim 2
Dependent Claim
74 words
A SOLID, TOUGH POLYISOCYANURATE WITH OXIDATIVE THERMAL STABILITY, CONTAINING AT LEAST ABOUT 25 DIFUNCTIONAL ORGANIC SUBSTITUTED ISOCYANURATE RINGS JOINED IN A CONTINUOUS STRUCTURE BY DIVALENT PHENOXYPHENYL RADICALS AND HAVING A MONOVALENT ARYL RADICAL SUBSTITUENT, AND CONTAINING TRIFUNCTIONAL ORGANIC SUBSTITUTED ISOCYANURATE RINGS IN AN AMOUNT OF UP TO 10 TIMES THE AMOUNT OF SAID DIFUNCTIONAL RINGS, WHEREIN THE ORGANIC SUBSTITUENTS OF THE SAID TRIFUNCTIONAL RINGS ARE DIVALENT PHENOXYPHENYL RADICALS, SAID POLYMER CONTAINING THE STRUCTURAL UNITS
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |