US2596937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intumescing composition composed of a nitrogen phosphorus compound with an aldehyde resin
Assignee: Monsanto Chemicals Ltd
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Filing: 1948-12-30
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Granted: 1952-05-13
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Expires: 1968-12-30
Abstract
No abstract record available.
Inventors
- 👤 Morris L Nielsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:05
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
AN INTUMESCING COMPOSITION COMPOSED OF THE WATER-INSOLUBLE REACTION PRODUCT OF PHOSPHORYL CHLORIDE AND ANHYDROUS AMMONIA, AND WATER-INSOLUBLE PRODUCT HAVIANG A NITROGEN/PHOSPHOURUS RATIO BETWEEN 1.72:1 AND 1.80:1, IN COMBINATION WITH A RESIN SELECTED FROM THE GROUP CONSISTING OF THE REACTION PRODUCTS OF AN ALDEHYDE WITH A MEMBER OF THE CLASS CONSISTING OF UREA, MELAMIE AND DICYANIDIAMIDE.
Claim 2
Dependent Claim
55 words
AN INTUMESCING COMPOSITION COMPOSED OF THE WATER-INSOLUBLE REACTION PRODUCT OF PHOSPHORYL CHLORIDE AND ANHYDROUS AMMONIA, AND WATER-INSOLUBLE PRODUCT HAVIANG A NITROGEN/PHOSPHOURUS RATIO BETWEEN 1.72:1 AND 1.80:1, IN COMBINATION WITH A RESIN SELECTED FROM THE GROUP CONSISTING OF THE REACTION PRODUCTS OF AN ALDEHYDE WITH A MEMBER OF THE CLASS CONSISTING OF UREA, MELAMIE AND DICYANIDIAMIDE.
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) | 1955-05-13 | 1955-11-12 | 1956-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-13 | 1959-11-12 | 1960-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-13 | 1963-11-12 | 1964-05-13 | $7700.00 | Window Closed / Lapsed |