Patent US3148163A successfully refreshed from Google Patents.
US3148163A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Whitened and stabilized polyurethane foams
Assignee: GAF Chemicals Corp
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Filing: 1960-12-12
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Granted: 1964-09-08
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Expires: 1980-12-12
Abstract
No abstract record available.
Inventors
- 👤 Harlan B Freyermuth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:39
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0014; C08J9/0028; C08J2375/00; C08J2375/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
A CURED POLYURETHANE FOAM PRODUCT WHITENED AND STABILIZED AGAINST DECOLORATION, SAID PODUCT HAVING INCORPORATED THEREIN FROM ABOUT 0.001 TO ABOUT 0.5% BY WEIGHT OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS HAVING THE STRUCTURES:
Claim 2
Dependent Claim
36 words
A CURED POLYURETHANE FOAM PRODUCT WHITENED AND STABILIZED AGAINST DECOLORATION, SAID PODUCT HAVING INCORPORATED THEREIN FROM ABOUT 0.001 TO ABOUT 0.5% BY WEIGHT OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS HAVING THE STRUCTURES:
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) | 1967-09-08 | 1968-03-09 | 1968-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-08 | 1972-03-09 | 1972-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-08 | 1976-03-09 | 1976-09-08 | $7700.00 | Window Closed / Lapsed |