Patent US398528A successfully refreshed from Google Patents.
Patent US2937151A successfully refreshed from Google Patents.
US2937151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for reclaiming cured cellular polyurethanes
Assignee: Goodyear Tire and Rubber Co
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Filing: 1955-06-27
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Granted: 1960-05-17
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Expires: 1975-06-27
Abstract
No abstract record available.
Inventors
- 👤 Broeck Theodore R Ten
- 👤 Donald W Peabody
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:33
CPC Classifications
C; C08; C08J; C08J11/00; C08J11/04; C08J11/10; C08J11/18; C08J2375/00; C08J2375/04; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/62
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
183 words
A METHOD FOR UTILIZING CURED SCRAP CELLULAR MATERIAL PRODUCED FROM THE REACTION OF WATER, AN ORGANIC POLYISOCYANATE AND A LIQUID ACTIVE-HYDROGEN-CONTAINING POLYMERIC MATERIAL WHICH COMPRISES DISSOLVING UP TO 50% BY WEIGHT OF SAID CURED SCRAP CELLULAR MATERIAL IN A LIQUID ACTIVE-HYDROGEN-CONTAINING POLYMERIC MATERIAL BY HEATING THE MIXTURE OF SAID SCRAP MATERIAL AND SAID LIQUID MATERIAL UNTIL THE SCRAP MATERIAL DISSOLVES IN THE LIQUID MATERIAL, THE LIQUID ACTIVE-HYDROGEN-CONTAINING POLYMERIC MATERIAL USED IN MAKING THE SCRAP MATERIAL AND IN DISSOLVING THE SCRAP MATERIAL BEING SELECTED FROM THE GROUP CONSISTING OF POLYALKYLENE ETHER GLYCOLS, POLYESTERS PREPARED FROM THE CONDENSATION REACTION BETWEEN AT LEAST ONE GLYCOL AND AT LEAST ONE DICARBOXYLIC ACID, POLYESTERAMIDES PREPARED FROM THE CONDENSATION REACTION BETWEEN AT LEAST ONE GLYCOL, AT LEAST ONE DICARBOXYLIC ACID, AND AT LEAST ONE BIFUNCTIONAL AMINO COMPOUND SELECTED FROM THE GROUP CONSISTING OF DIAMINES, AMINO ALCOHOLS, AND AMINO CARBOXYLIC ACIDS, SAID POLYESTERS AND POLYESTERAMIDES HAVING AN ACID NUMBER NOT GREATER THAN 5 AND SAID POLYESTERS, POL,YESTERAMIDES AND POLYALKYLENE ETHER GLYCOLS HAVING AN HYDROXYL NUMBER FROM 20 TO 110 AND AN AVERAGE MOLECULAR WEIGHT OF FROM APPROXIMATELY 1000 TO 5000.
Claim 2
Independent Claim
183 words
A METHOD FOR UTILIZING CURED SCRAP CELLULAR MATERIAL PRODUCED FROM THE REACTION OF WATER, AN ORGANIC POLYISOCYANATE AND A LIQUID ACTIVE-HYDROGEN-CONTAINING POLYMERIC MATERIAL WHICH COMPRISES DISSOLVING UP TO 50% BY WEIGHT OF SAID CURED SCRAP CELLULAR MATERIAL IN A LIQUID ACTIVE-HYDROGEN-CONTAINING POLYMERIC MATERIAL BY HEATING THE MIXTURE OF SAID SCRAP MATERIAL AND SAID LIQUID MATERIAL UNTIL THE SCRAP MATERIAL DISSOLVES IN THE LIQUID MATERIAL, THE LIQUID ACTIVE-HYDROGEN-CONTAINING POLYMERIC MATERIAL USED IN MAKING THE SCRAP MATERIAL AND IN DISSOLVING THE SCRAP MATERIAL BEING SELECTED FROM THE GROUP CONSISTING OF POLYALKYLENE ETHER GLYCOLS, POLYESTERS PREPARED FROM THE CONDENSATION REACTION BETWEEN AT LEAST ONE GLYCOL AND AT LEAST ONE DICARBOXYLIC ACID, POLYESTERAMIDES PREPARED FROM THE CONDENSATION REACTION BETWEEN AT LEAST ONE GLYCOL, AT LEAST ONE DICARBOXYLIC ACID, AND AT LEAST ONE BIFUNCTIONAL AMINO COMPOUND SELECTED FROM THE GROUP CONSISTING OF DIAMINES, AMINO ALCOHOLS, AND AMINO CARBOXYLIC ACIDS, SAID POLYESTERS AND POLYESTERAMIDES HAVING AN ACID NUMBER NOT GREATER THAN 5 AND SAID POLYESTERS, POL,YESTERAMIDES AND POLYALKYLENE ETHER GLYCOLS HAVING AN HYDROXYL NUMBER FROM 20 TO 110 AND AN AVERAGE MOLECULAR WEIGHT OF FROM APPROXIMATELY 1000 TO 5000.
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) | 1963-05-17 | 1963-11-16 | 1964-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-17 | 1967-11-16 | 1968-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-17 | 1971-11-16 | 1972-05-17 | $7700.00 | Window Closed / Lapsed |