Patent US3245924A successfully refreshed from Google Patents.
US3245924A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethane compositions
Assignee: Union Carbide Corp
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Filing: 1962-05-01
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Granted: 1966-04-12
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Expires: 1982-05-01
Abstract
No abstract record available.
Inventors
- 👤 Eugene F Cox
- 👤 William H Cook
- 👤 Hostettler Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:01
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/54; C08G18/546
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
32 words
A POLYURETHANE FOAM WHICH COMPRISES THE FOAMED REACTION PRODUCT OF AN ORGANIC POLYISOCYANATE, A BLOWING AGENT AND AN ALKYLENE OXIDE ADDUCT OF THE CONDENSATION PRODUCT OF (A) A PHENOL OF THE FORMULA
References Cited (Backward Citations)
US2499365A
Cited
US3075927A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |