US3619338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass fabric sheets bonded together with polyisocyanurates prepared from an organic diisocyanate and a monoisocyanate using ionic polymerization catalysts
Assignee: Monsanto Research Corp
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Filing: 1968-05-14
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Granted: 1971-11-09
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Expires: 1988-05-14
Abstract
Abstract Polyisocyanurates made by reacting diisocyanates and monoisocyanates, process for making the polyisocyanurates using ionic polymerization catalysts, and laminates made fusing the polyisocyanurates as laminating resins.
Inventors
- 👤 Lucius G Gilman
- 👤 Morton H Gollis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:55
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/26; C; C03; C03C; C03C25/00; C03C25/10; C03C25/24; C03C25/26; B32B7/00; B32B7/04; B32B7/12; C08; C08G; C08G18/00; C08G18/02; C08G18/022; B32B2262/00; B32B2262/10; B32B2262/101; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31547; Y10T428/31551; Y10T428/31598; Y10T428/31601; Y10T442/00; Y10T442/30; Y10T442/3472; Y10T442/3528; Y10T442/3569
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
18 words
The article of claim 17 wherein said diisocyanate is 4,4''-diphenyl methane diisocyanate and said monoisocyanate is m-chlorophenyl isocyanate.
References Cited (Backward Citations)
US2977360A
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US2952576A
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US2978449A
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US3367934A
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US3044913A
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US3206352A
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US3211703A
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US3211704A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |