US3206416A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethane foams prepared from halogenated castor oil
Assignee: Bayer AG
•
Filing: 1961-06-06
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Granted: 1965-09-14
•
Expires: 1981-06-06
Abstract
No abstract record available.
Inventors
- 👤 Dahm Manfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:55
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/36; C08G18/38; C08G18/3802; C08G18/3817; C08G18/40; C08G18/48; C08G18/50; C08G18/5075; C08G18/5081; C08G18/65; C08G18/66; C08G18/6666; C08G18/6696; C08G2110/00; C08G2110/0041; C08G2110/005; C08G2110/0058; C08G2110/0083
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
A POLYURETHANE FOAM PREPARED BY A PROCESS WHICH COMPRISES REACTING AN ORGANIC POLYISOCYANATE WITH A HALOGENATED CASTOR OIL HAVING A VISCOSITY OF FROM ABOUT 800 TO ABOUT 2000 CP./25*C. IN A REACTION MIXTURE CONTAINING A BLOWING AGENT.
Claim 2
Dependent Claim
37 words
A POLYURETHANE FOAM PREPARED BY A PROCESS WHICH COMPRISES REACTING AN ORGANIC POLYISOCYANATE WITH A HALOGENATED CASTOR OIL HAVING A VISCOSITY OF FROM ABOUT 800 TO ABOUT 2000 CP./25*C. IN A REACTION MIXTURE CONTAINING A BLOWING AGENT.
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) | 1968-09-13 | 1969-03-15 | 1969-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-13 | 1973-03-15 | 1973-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-13 | 1977-03-15 | 1977-09-14 | $7700.00 | Window Closed / Lapsed |