US3054760A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethane foam containing ethylene glycol antimonite or 1, 2-propylene glycol antimonite or mixtures thereof
Assignee: Hooker Chemical Corp
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Filing: 1960-04-22
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Granted: 1962-09-18
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Expires: 1980-04-22
Abstract
No abstract record available.
Inventors
- 👤 Worsley Michael
- 👤 Blaine O Schoepfle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:43
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0014; C08J9/0057; C08J2375/00; C08J2375/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
AFIRE-RESISTANT CELLULAR REACTION PRODUCT COMPRISING THE REACTION PRODUCT OF (1) A HYDROXYL-CONTAINING POLYMER HAVING A HYDROXYL NUMBER OF BETWEEN ANOUT TWENTYFIVE AND NINE HUNDERED, (2) AN ORGANIC POLYISOCYANATE, (3) FROM ABOUT FIVE TO FITY PERCENT BY WEIGHT OF AN ANTIMONY COMPOUND SELECTED FROM THE GROUP CONSISTING OF ETHYLENE GLYCOL ANTIMONITE, 1,2-PROPYLENE GLYCOL ANTIMONITE, AND MIXTURES THEREOF, AND (4) A FOAMING AGENT
Claim 2
Dependent Claim
61 words
AFIRE-RESISTANT CELLULAR REACTION PRODUCT COMPRISING THE REACTION PRODUCT OF (1) A HYDROXYL-CONTAINING POLYMER HAVING A HYDROXYL NUMBER OF BETWEEN ANOUT TWENTYFIVE AND NINE HUNDERED, (2) AN ORGANIC POLYISOCYANATE, (3) FROM ABOUT FIVE TO FITY PERCENT BY WEIGHT OF AN ANTIMONY COMPOUND SELECTED FROM THE GROUP CONSISTING OF ETHYLENE GLYCOL ANTIMONITE, 1,2-PROPYLENE GLYCOL ANTIMONITE, AND MIXTURES THEREOF, AND (4) A FOAMING AGENT
References Cited (Backward Citations)
US2577281A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-17 | 1966-03-19 | 1966-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-17 | 1970-03-19 | 1970-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-17 | 1974-03-19 | 1974-09-18 | $7700.00 | Window Closed / Lapsed |