US2606892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerizable and polymerized isocyanate compositions
Assignee: Wyeth Holdings LLC
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Filing: 1946-08-30
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Granted: 1952-08-12
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Expires: 1966-08-30
Abstract
No abstract record available.
Inventors
- 👤 Edward L Kropa
- 👤 Arthur S Nyquist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:58
CPC Classifications
C; C07; C07C; C07C265/00; C08; C08F; C08F12/00; C08F12/02; C08F12/04; C08F12/14; C08F12/26; C08F26/00; C08F26/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A POLYMERIZABLE COMPOSITION COMPRISING A MIXTURE OF, BY WEIGHT, A MINOR PROPORTION OF (1) A PRIMARY ISOCYANATE REPRESENTED BY THE GENERAL FORMULA CH2=CR-(A)N-CH2-NCO WHERE R REPRESENTS A MEMBER OF THE CLASS CONSISTING OF HYDROGEN AND THE METHYL RADICAL, A REPRESENTS A MEMBER OF THE CLASS CONSISTING OF DIVALENT SATURATED ALIPHATIC HYDROCARBON RADICALS, DIVALENT AROMATIC HYDROCARBON RADICALS, DIVALENT SATURATED ALIPHATIC-SUBSTITUTED AROMATIC HYDROCARBON RADICALS AND DIVALENT AROMATIC-SUBSTITUTED SATURATED ALIPHATIC HYDROCARBON RADICALS, AND N REPRESENTS A VALUE SELECTED FROM THE CLASS CONSISTING OF 0 AND 1, THE METHYLENE RADICAL ATTACHED TO THE ISOCYANATE GROUPING BEING ATTACHED DIRECTLY, WHEN N IS 1, TO ANY CARBON ATOM OF THE DIVALENT RADICAL REPRESENTED BY A, AND A MAJOR PROPORTION OF (2) A DIFFERENT ORGANIC COMPOUND WHICH IS COPOLYMERIZABLE WITH THE ISOCYANATE OF (1), WHICH CONTAINS A SINGLE
Claim 2
Dependent Claim
131 words
A POLYMERIZABLE COMPOSITION COMPRISING A MIXTURE OF, BY WEIGHT, A MINOR PROPORTION OF (1) A PRIMARY ISOCYANATE REPRESENTED BY THE GENERAL FORMULA CH2=CR-(A)N-CH2-NCO WHERE R REPRESENTS A MEMBER OF THE CLASS CONSISTING OF HYDROGEN AND THE METHYL RADICAL, A REPRESENTS A MEMBER OF THE CLASS CONSISTING OF DIVALENT SATURATED ALIPHATIC HYDROCARBON RADICALS, DIVALENT AROMATIC HYDROCARBON RADICALS, DIVALENT SATURATED ALIPHATIC-SUBSTITUTED AROMATIC HYDROCARBON RADICALS AND DIVALENT AROMATIC-SUBSTITUTED SATURATED ALIPHATIC HYDROCARBON RADICALS, AND N REPRESENTS A VALUE SELECTED FROM THE CLASS CONSISTING OF 0 AND 1, THE METHYLENE RADICAL ATTACHED TO THE ISOCYANATE GROUPING BEING ATTACHED DIRECTLY, WHEN N IS 1, TO ANY CARBON ATOM OF THE DIVALENT RADICAL REPRESENTED BY A, AND A MAJOR PROPORTION OF (2) A DIFFERENT ORGANIC COMPOUND WHICH IS COPOLYMERIZABLE WITH THE ISOCYANATE OF (1), WHICH CONTAINS A SINGLE
References Cited (Backward Citations)
US2326287A
Cited
US2335582A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-12 | 1956-02-11 | 1956-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-12 | 1960-02-11 | 1960-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-12 | 1964-02-11 | 1964-08-12 | $7700.00 | Window Closed / Lapsed |