Patent US3110686A successfully refreshed from Google Patents.
US3110686A
Expired / Lapsed
US
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Foamed elastomeric material which is the reaction product of a linear polycarbonate, an organic diisocyanate and water
Assignee: PPG Industries Inc
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Filing: 1954-12-16
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Granted: 1963-11-12
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Expires: 1974-12-16
Abstract
No abstract record available.
Inventors
- 👤 Wilbert F Newton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:10
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/42; C08G18/44; C08G2110/00; C08G2110/0008; C08G2110/0041; C08G2110/005; C08G2110/0058; C08G2110/0083
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
AN ELASTIC, CELLULAR FOAM COMPRISING THE REACTION PRODUCT OBTAINED BY REACTING IN THE PRESENCE OF WATER FROM 1 TO 6 MOLES OF AN ORGANIC DIISOCYANATE WITH ONE MOLE OF A LINEAR POLYCARBONATE HAVING A MOLECULAR WEIGHT BETWEEN 800 AND 5000, A HYDROXYL NUMBER OF FROM 20 TO 100 AND OF THE FORMULA:
Claim 2
Dependent Claim
52 words
AN ELASTIC, CELLULAR FOAM COMPRISING THE REACTION PRODUCT OBTAINED BY REACTING IN THE PRESENCE OF WATER FROM 1 TO 6 MOLES OF AN ORGANIC DIISOCYANATE WITH ONE MOLE OF A LINEAR POLYCARBONATE HAVING A MOLECULAR WEIGHT BETWEEN 800 AND 5000, A HYDROXYL NUMBER OF FROM 20 TO 100 AND OF THE FORMULA:
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) | 1966-11-11 | 1967-05-13 | 1967-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-11 | 1971-05-13 | 1971-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-11 | 1975-05-13 | 1975-11-12 | $7700.00 | Window Closed / Lapsed |