US3178300A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Skeletal polyurethane foam and method of making same
Assignee: Bayer Corp
•
Filing: 1964-04-06
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Granted: 1965-04-13
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Expires: 1984-04-06
Abstract
No abstract record available.
Inventors
- 👤 Paul G Gemeinhardt
- 👤 Stanley A Bingham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:58
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/2805; C08G18/2815; C08G18/281; C08G18/30; C08G18/36; C08G2101/00; C08G2110/00; C08G2110/0041
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
THE METHOD OF MAKING A SKELETAL CELLULAR POLYURETHANE PLASTIC WHICH COMPRISES REACTING AN ORGANIC POLYISOCYANATE WITH CASTOR OIL IN THE PRESENCE OF A BLOWING AGENT, AN ALKLY SILANE OXYALKYLENE BLOCK COPOLYMER AND FROM ABOUT 5 TO ABOUT 40 PARTS PER 100 PARTS OF CASTOR OIL OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF MONOHYDRIC ALCOHOLS HAVING 1 TO 18 CARBON ATOMS AND MONOCARBOXYLIC ACIDS HAVING 2 TO 18 CARBON ATOMS, THE ALCOHOLIC HYDROXYL RADICAL AND THE CARBOXYLIC ACID RADICAL OF SAID RESPECTIVE GROUP MEMBERS BEING THE SOLE ACTIVE HYDROGEN CONTAINING RADICAL IN THE RESPECTIVE GROUP MEMBERS.
Claim 2
Independent Claim
97 words
THE METHOD OF MAKING A SKELETAL CELLULAR POLYURETHANE PLASTIC WHICH COMPRISES REACTING AN ORGANIC POLYISOCYANATE WITH CASTOR OIL IN THE PRESENCE OF A BLOWING AGENT, AN ALKLY SILANE OXYALKYLENE BLOCK COPOLYMER AND FROM ABOUT 5 TO ABOUT 40 PARTS PER 100 PARTS OF CASTOR OIL OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF MONOHYDRIC ALCOHOLS HAVING 1 TO 18 CARBON ATOMS AND MONOCARBOXYLIC ACIDS HAVING 2 TO 18 CARBON ATOMS, THE ALCOHOLIC HYDROXYL RADICAL AND THE CARBOXYLIC ACID RADICAL OF SAID RESPECTIVE GROUP MEMBERS BEING THE SOLE ACTIVE HYDROGEN CONTAINING RADICAL IN THE RESPECTIVE GROUP MEMBERS.
References Cited (Backward Citations)
US2772245A
Cited
FR1176044A
Cited
US2961710A
Cited
GB852379A
Cited
FR1212252A
Cited
US2956031A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |