Patent US3003577A successfully refreshed from Google Patents.
Patent US2930771A successfully refreshed from Google Patents.
US2930771A
Expired / Lapsed
US
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Foamable heat insulating resinous composition containing a borohydride blowing agent
Assignee: Metal Hydrides Inc
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Filing: 1957-03-18
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Granted: 1960-03-29
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Expires: 1977-03-18
Abstract
No abstract record available.
Inventors
- 👤 Robert C Wade
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:10
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/06; C08J9/065
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A HOMOGENEOUS LIQUID COMPOSITION CAPABLE OF BEING DRIED TO FORM A HARD TOUGH CELLULAR PRODUCT SUITABLE FOR HEAT INSULATION AT TEMPERATURES UP TO ABOUT 500$ C., SAID COMPOSITION CONSISTING ESSENTIALLY OF ABOUT 40 PARTS BY WEIGHT OF SODIUM SILICATE, ABOUT 4 TO 12 PARTS BY WEIGHT OF A RESIN SELECTED FROM THE GROUP CONSISTING OF WATER SOLUBLE POLYVINYL ALCOHOL, A WATER SOLUBLE RESIN OF MELAMINE AND FORMALDEHYDE, A WATER DISPERSIBLE POLYVINYL ACETATE AND MIXTURES THEREOF, ABOUT 0.1 TO 0.5 PART BY WEIGHT OF A BOROHYDRIDE SELECTED FROM THE GROUP CONSISTING OF SODIUM BOROHYDRIDE AND POTASSIUM BOROHYDRIDE, AND FROM ABOUT 60 TO 65 PARTS BY WEIGHT OF WATER.
Claim 2
Dependent Claim
107 words
A HOMOGENEOUS LIQUID COMPOSITION CAPABLE OF BEING DRIED TO FORM A HARD TOUGH CELLULAR PRODUCT SUITABLE FOR HEAT INSULATION AT TEMPERATURES UP TO ABOUT 500$ C., SAID COMPOSITION CONSISTING ESSENTIALLY OF ABOUT 40 PARTS BY WEIGHT OF SODIUM SILICATE, ABOUT 4 TO 12 PARTS BY WEIGHT OF A RESIN SELECTED FROM THE GROUP CONSISTING OF WATER SOLUBLE POLYVINYL ALCOHOL, A WATER SOLUBLE RESIN OF MELAMINE AND FORMALDEHYDE, A WATER DISPERSIBLE POLYVINYL ACETATE AND MIXTURES THEREOF, ABOUT 0.1 TO 0.5 PART BY WEIGHT OF A BOROHYDRIDE SELECTED FROM THE GROUP CONSISTING OF SODIUM BOROHYDRIDE AND POTASSIUM BOROHYDRIDE, AND FROM ABOUT 60 TO 65 PARTS BY WEIGHT OF WATER.
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) | 1963-03-29 | 1963-09-28 | 1964-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-29 | 1967-09-28 | 1968-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-29 | 1971-09-28 | 1972-03-29 | $7700.00 | Window Closed / Lapsed |