Patent US2955058A successfully refreshed from Google Patents.
US2955058A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spray application of foamable polyurethane materials
Assignee: EIDP Inc
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Filing: 1957-12-13
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Granted: 1960-10-04
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Expires: 1977-12-13
Abstract
No abstract record available.
Inventors
- 👤 Seymour R Foster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:14
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0061; B; B29; B29B; B29B7/00; B29B7/74; B29B7/7404; C08J2375/00; C08J2375/04; C08J2375/06; C08J2433/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
IN THE PROCESS OF FORMING A CELLULAR POLYURETHANE STRUCTURE ON A SURFACE BY SPRAYING SEPARATE STREAMS OF INGREDIENTS, WHICH ARE MIXED AFTER LEAVING THEIR RESPECTIVE ORIFICES, SAID STREAMS BEING (1) A STREAM COMPRISING 100 PARTS BY WEIGHT OF A FLUID POLYESTER POLYOL HAVING AT LEAST ONE HYDROXYL GROUP AS A CROSS-LINKING SITE FOR EACH 400 UNITS OF MOLECULAR WEIGHT OF SAID POLYESTER, 4.1 TO 5.8 WEIGHT PARTS OF WATER, AND 1.6 TO 3.4 WEIGHT PARTS OF A BASIC CATALYST, SAID CATALYST BEING SELECTED FROM THE GROUP CONSISTING OF A TRI LOWER ALKYL AMINE, A MIXTURE COMPRISING SAID TRI LOWER ALKYL AMINE AND SODIUM METHYL SILICONATE, AND A MIXTURE COMPRISING AN AMINE OF THE STRUCTURE, R2R''N, WHEREIN R IS A LOWER ALKYL RADICAL AND R'' IS LOWER ALKYL RADICAL SUBSTITUTED BY A HYDROXYL GROUP, AND SODIUM METHYL SILICONATE, AND (2) A STREAM COMPRISING A POLYISOCYANATE POLYURETHANE COMPOSITION MADE BY
Claim 2
Dependent Claim
148 words
IN THE PROCESS OF FORMING A CELLULAR POLYURETHANE STRUCTURE ON A SURFACE BY SPRAYING SEPARATE STREAMS OF INGREDIENTS, WHICH ARE MIXED AFTER LEAVING THEIR RESPECTIVE ORIFICES, SAID STREAMS BEING (1) A STREAM COMPRISING 100 PARTS BY WEIGHT OF A FLUID POLYESTER POLYOL HAVING AT LEAST ONE HYDROXYL GROUP AS A CROSS-LINKING SITE FOR EACH 400 UNITS OF MOLECULAR WEIGHT OF SAID POLYESTER, 4.1 TO 5.8 WEIGHT PARTS OF WATER, AND 1.6 TO 3.4 WEIGHT PARTS OF A BASIC CATALYST, SAID CATALYST BEING SELECTED FROM THE GROUP CONSISTING OF A TRI LOWER ALKYL AMINE, A MIXTURE COMPRISING SAID TRI LOWER ALKYL AMINE AND SODIUM METHYL SILICONATE, AND A MIXTURE COMPRISING AN AMINE OF THE STRUCTURE, R2R''N, WHEREIN R IS A LOWER ALKYL RADICAL AND R'' IS LOWER ALKYL RADICAL SUBSTITUTED BY A HYDROXYL GROUP, AND SODIUM METHYL SILICONATE, AND (2) A STREAM COMPRISING A POLYISOCYANATE POLYURETHANE COMPOSITION MADE BY
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-04 | 1964-04-04 | 1964-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-04 | 1968-04-04 | 1968-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-04 | 1972-04-04 | 1972-10-04 | $7700.00 | Window Closed / Lapsed |