US2866730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminated panel and process for producing same
Assignee: Haskelite Manufacturing Corp
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Filing: 1955-05-11
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Granted: 1958-12-30
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Expires: 1975-05-11
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Potchen
- 👤 George E Kloote
- 👤 George D Meier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:36
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/20; B29C44/22; B32; B32B; B32B27/00; B29L; B29L2007/00; B29L2009/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/24496; Y10T428/24504; Y10T428/24595; Y10T442/00; Y10T442/60; Y10T442/647; Y10T442/651
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
86 words
A SANDWICH PANEL COMPRISING A LIGHTWEIGHT CORE AND FACING SHEETS INTEGRALLY BONDED TO AT LEAST TWO SIDES OF SAID CORE, SAID FACING SHEETS COMPRISING A THERMOSET POLYESTER RESEINOUS COMPOSITION AND SAID CORE BEING A POLYISOCYANATE FOAMED RESINOUS COMPOSITION, SAID CORE VARYING IN DENSITY FROM THE INNER SURFACE OF EACH SAID FACING SHEET TOWARD EACH OTHER FROM A REGION OF GREATER DENSITY IMMEDIATELY ADJACENT TO THE INNER SURFACE OF EACH SAID SHEET TO A REGION OF LEAST DENSITY IN AN AREA SPACED INWARDLY FROM EACH SAID SHEET.
Claim 2
Dependent Claim
86 words
A SANDWICH PANEL COMPRISING A LIGHTWEIGHT CORE AND FACING SHEETS INTEGRALLY BONDED TO AT LEAST TWO SIDES OF SAID CORE, SAID FACING SHEETS COMPRISING A THERMOSET POLYESTER RESEINOUS COMPOSITION AND SAID CORE BEING A POLYISOCYANATE FOAMED RESINOUS COMPOSITION, SAID CORE VARYING IN DENSITY FROM THE INNER SURFACE OF EACH SAID FACING SHEET TOWARD EACH OTHER FROM A REGION OF GREATER DENSITY IMMEDIATELY ADJACENT TO THE INNER SURFACE OF EACH SAID SHEET TO A REGION OF LEAST DENSITY IN AN AREA SPACED INWARDLY FROM EACH SAID SHEET.
Claim 3
Independent Claim
123 words
A METHOD FOR FORMING A MULTILAMINAR PANEL WHICH COMPRISES THE STEPS OF COATING A SURFACE OF EACH OF A PAIR OF FACING SHEETS WITH A LAYER OF A VISCOUS LIQUID FOAMFORMING POLYISOCYANATE-RESIN MIXUTRE, PARTIALLY FOAMING THE SAID MIXTURE ON EACH OF THE SAID FACING SHEETS TO ESTABLISH A PARTIALLY FOAMED RESINOUS LAYER THEREON, SAID RESINOUS LAYERS EACH HAVING A GREATER DENSITY IN THE REGION ADJACENT ITS FACING SHEET THAN IN THE REGION MORE REMOTE FROM EACH SAID FACING SHEET, PLACING THE SAID FACING SHEETS BETWEEN CONFINING SURFACES WITH TE SAID PARTIALLY FOAMED LAYERS FACING ONE ANOTHER, EFFECTING FURTHER FOAMING OF THE SAID PARTIALLY FOAMED LAYERS UNTIL THE SPACE BETWEEN SAID CONFINING SURFACES IS OCCUPIED BY THE EXPANDING FORM, AND CURING THE SAID FOAM.
Claim 4
Independent Claim
123 words
A METHOD FOR FORMING A MULTILAMINAR PANEL WHICH COMPRISES THE STEPS OF COATING A SURFACE OF EACH OF A PAIR OF FACING SHEETS WITH A LAYER OF A VISCOUS LIQUID FOAMFORMING POLYISOCYANATE-RESIN MIXUTRE, PARTIALLY FOAMING THE SAID MIXTURE ON EACH OF THE SAID FACING SHEETS TO ESTABLISH A PARTIALLY FOAMED RESINOUS LAYER THEREON, SAID RESINOUS LAYERS EACH HAVING A GREATER DENSITY IN THE REGION ADJACENT ITS FACING SHEET THAN IN THE REGION MORE REMOTE FROM EACH SAID FACING SHEET, PLACING THE SAID FACING SHEETS BETWEEN CONFINING SURFACES WITH TE SAID PARTIALLY FOAMED LAYERS FACING ONE ANOTHER, EFFECTING FURTHER FOAMING OF THE SAID PARTIALLY FOAMED LAYERS UNTIL THE SPACE BETWEEN SAID CONFINING SURFACES IS OCCUPIED BY THE EXPANDING FORM, AND CURING THE SAID FOAM.
References Cited (Backward Citations)
US752147A
Cited
US1895731A
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US2434527A
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US2639252A
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DE842267C
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US2690987A
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US2744042A
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US2753642A
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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) | 1961-12-29 | 1962-06-30 | 1962-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-29 | 1966-06-30 | 1966-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-29 | 1970-06-30 | 1970-12-30 | $7700.00 | Window Closed / Lapsed |