US3061559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Urethane polymer prepared from an organic polyisocyanate and 2, 2-bis(4-cyclohexanol)propane
Assignee: Dow Chemical Co
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Filing: 1960-03-21
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Granted: 1962-10-30
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Expires: 1980-03-21
Abstract
No abstract record available.
Inventors
- 👤 Walter A Henson
- 👤 Robert F Helmreich
- 👤 Wilbur E Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:12
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/32; C08G18/3203; C08G18/3212
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
49 words
A HIGH MOLECULAR WEIGHT SOLID SYNTHETIC URETHANE POLYMER FOAM COMPRISING THE POLYMERIZATION PRODUCT OF ABOUT 31 MOL PERCENT 2,2-BIS(4-CYCLOHEXANIL) POPANE, ABOUT MOL PERCENT TOLYLENE DIISOCYANATE AND ABOUT 8 MOL PERCENT OF A POLYPROPYLENE ETHER GLYCOL HAVING AN AVERAGE MOLECULAR WEIGHT ABOUT 2000 AND ABOUT 11 MOL PERCENT OF WATER.
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) | 1965-10-29 | 1966-04-30 | 1966-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-29 | 1970-04-30 | 1970-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-29 | 1974-04-30 | 1974-10-30 | $7700.00 | Window Closed / Lapsed |