US3073788A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethane foams
Assignee: Union Carbide Corp
•
Filing: 1959-11-17
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Granted: 1963-01-15
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Expires: 1979-11-17
Abstract
No abstract record available.
Inventors
- 👤 Hostettler Fritz
- 👤 Robert K Barnes
- 👤 Robert W Mclaughlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:14
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/487; C08G18/4883; C08G18/08; C08G18/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
29 words
A CELLULAR POLYURETHANE FOAM PREPARED BY THE CATALYTIC REACTION OF AN ORGANIC POLYISOCYANATE AND POLYETHER IN THE PRESENCE OF A BLOWING AGENT WHEREIN SAID ETHER CORRESPONDS TO THE FORMULA:
Claim 2
Dependent Claim
29 words
A CELLULAR POLYURETHANE FOAM PREPARED BY THE CATALYTIC REACTION OF AN ORGANIC POLYISOCYANATE AND POLYETHER IN THE PRESENCE OF A BLOWING AGENT WHEREIN SAID ETHER CORRESPONDS TO THE FORMULA:
References Cited (Backward Citations)
FR1212252A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-14 | 1966-07-16 | 1967-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-14 | 1970-07-16 | 1971-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-14 | 1974-07-16 | 1975-01-15 | $7700.00 | Window Closed / Lapsed |