US3137661A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethane foam prepared from an adduct of chloral and a polyhydric compound
Assignee: Olin Corp
•
Filing: 1962-01-05
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Granted: 1964-06-16
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Expires: 1982-01-05
Abstract
No abstract record available.
Inventors
- 👤 James S Rose
- 👤 Shine D Robert
- 👤 Joseph V Karabinos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:05
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/38; C08G18/3802; C08G18/3804; C08G18/3806; C08G18/3808
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A POLYURETHANE FOAM PREPARED BY THE PROCESS WHICH COMPRISES REACTING TOGETHER (1) THE ADDUCT OF THE CHLORAL AND A MONOMERIC POLYHYRIC COMPOUND, SAID ADDUCT HAVING A HYDROXYL NUMBER BETWEEN 30 AND 800, (2) AN ORGANIC POLYISOCYANATE IN AN AMOUNT AT LEAST 0.7 NCO GROUPS BASED ON THE NUMBER OF HYDROXYL GROUPS PRESENT IN THE PRESENCE OF (3) A FOAMING AGENT AND (4) A REACTION CATALYST.
Claim 2
Dependent Claim
65 words
A POLYURETHANE FOAM PREPARED BY THE PROCESS WHICH COMPRISES REACTING TOGETHER (1) THE ADDUCT OF THE CHLORAL AND A MONOMERIC POLYHYRIC COMPOUND, SAID ADDUCT HAVING A HYDROXYL NUMBER BETWEEN 30 AND 800, (2) AN ORGANIC POLYISOCYANATE IN AN AMOUNT AT LEAST 0.7 NCO GROUPS BASED ON THE NUMBER OF HYDROXYL GROUPS PRESENT IN THE PRESENCE OF (3) A FOAMING AGENT AND (4) A REACTION CATALYST.
References Cited (Backward Citations)
US2784237A
Cited
US2961428A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-16 | 1967-12-16 | 1968-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-16 | 1971-12-16 | 1972-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-16 | 1975-12-16 | 1976-06-16 | $7700.00 | Window Closed / Lapsed |