Patent US2998395A successfully refreshed from Google Patents.
US2998395A
Expired / Lapsed
US
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Method for reclaiming scrap polyurethane resin
Assignee: Reeves Brothers Inc
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Filing: 1955-11-28
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Granted: 1961-08-29
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Expires: 1975-11-28
Abstract
No abstract record available.
Inventors
- 👤 Albert Heinz
- 👤 Tacke Wilfried
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:33
CPC Classifications
C; C08; C08J; C08J11/00; C08J11/04; C08J11/10; C08J11/12; C08J2375/00; C08J2375/04; C08J2375/06; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/62; Y10; Y10S; Y10S521/00; Y10S521/917; Y10S521/918
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A METHOD OF DECOMPOSING A POLYURETHANE RESIN WITH THE PRODUCTION OF A USEFUL LIQUID RESIDUE WHICH COMPRISES IGNITING AND BURNING IN AIR A COMBUSTIBLE, CELLULAR POLYURETHANE RESIN BEING THE REACTION PRODUCTION OF A POLYESTER, A DIISOCYANATE AND WATER, SAID POLYESTER BEING THE REACTION PRODUCTION OF A POLYCARBOXYLIC ACID AND A POLYBASIS ALCOHOL, THUS FORMING A BURNING LIQUID PRODUCTION, COOLING SAID ING THE LIQUID RESDUE.
Claim 2
Independent Claim
64 words
A METHOD OF DECOMPOSING A POLYURETHANE RESIN WITH THE PRODUCTION OF A USEFUL LIQUID RESIDUE WHICH COMPRISES IGNITING AND BURNING IN AIR A COMBUSTIBLE, CELLULAR POLYURETHANE RESIN BEING THE REACTION PRODUCTION OF A POLYESTER, A DIISOCYANATE AND WATER, SAID POLYESTER BEING THE REACTION PRODUCTION OF A POLYCARBOXYLIC ACID AND A POLYBASIS ALCOHOL, THUS FORMING A BURNING LIQUID PRODUCTION, COOLING SAID ING THE LIQUID RESDUE.
References Cited (Backward Citations)
US2543530A
Cited
US2729618A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-28 | 1965-02-27 | 1965-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-28 | 1969-02-27 | 1969-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-28 | 1973-02-27 | 1973-08-29 | $7700.00 | Window Closed / Lapsed |