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US3846203A Expired / Lapsed US ⏱️ 0.0 years remaining

Method of making a sandwich panel construction

Assignee: Ethyl Corp
•
Filing: 1972-08-23
•
Granted: 1974-11-05
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Expires: 1992-08-23
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Abstract

Abstract 1. A METHOD OF MANFACTURING IMPROVED SANDWICH PANEL CONSTRUCTION WHICH COMPRISES (A) CUTTING ALUMINUM FOAM SLAB, HAVING A METAL SHEET BONDED TO AT LEAST ONE SIDE, INTO PIECES OF SUBSTANTIALLY EQUAL DIMENSIONS SAID CUTTING BEING IN A UNIDIRECTION PLANE PASSING THROUGH SAID METAL SHEET, (B) PREPARING A LAMINATE OF SAID PIECES BY BONDING SAID PIECES WITH A THERMOST ADHESIVE, SO THAT SAID METAL SHEET BONDED SIDES ARE SUBTANTIALLY PARALLEL AND (C) PREPARING A SANDWICH PANEL CONSTRUCTION BY BONDING TWO OUTER METAL LAYERS TO OPPOSITE SIDES OF SAID LAMINATE SUCH THAT SAID LAYERS ARE SUBSTANTIALLY NORMAL TO SAID METAL SHEET SIDES AND SAID METAL SHEET SIDES EXTEND FULLY BETWEEN SAID OUTER LAYERS.

Inventors

  • 👤 P Immethun

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 09:20
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/02; E04C2/26; E04C2/284; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1062; Y10T156/1075; Y10T156/1077; Y10T156/1089; Y10T156/1092

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 110 words
A METHOD OF MANFACTURING IMPROVED SANDWICH PANEL CONSTRUCTION WHICH COMPRISES (A) CUTTING ALUMINUM FOAM SLAB, HAVING A METAL SHEET BONDED TO AT LEAST ONE SIDE, INTO PIECES OF SUBSTANTIALLY EQUAL DIMENSIONS SAID CUTTING BEING IN A UNIDIRECTION PLANE PASSING THROUGH SAID METAL SHEET, (B) PREPARING A LAMINATE OF SAID PIECES BY BONDING SAID PIECES WITH A THERMOST ADHESIVE, SO THAT SAID METAL SHEET BONDED SIDES ARE SUBTANTIALLY PARALLEL AND (C) PREPARING A SANDWICH PANEL CONSTRUCTION BY BONDING TWO OUTER METAL LAYERS TO OPPOSITE SIDES OF SAID LAMINATE SUCH THAT SAID LAYERS ARE SUBSTANTIALLY NORMAL TO SAID METAL SHEET SIDES AND SAID METAL SHEET SIDES EXTEND FULLY BETWEEN SAID OUTER LAYERS.
Claim 2
Independent Claim 110 words
A METHOD OF MANFACTURING IMPROVED SANDWICH PANEL CONSTRUCTION WHICH COMPRISES (A) CUTTING ALUMINUM FOAM SLAB, HAVING A METAL SHEET BONDED TO AT LEAST ONE SIDE, INTO PIECES OF SUBSTANTIALLY EQUAL DIMENSIONS SAID CUTTING BEING IN A UNIDIRECTION PLANE PASSING THROUGH SAID METAL SHEET, (B) PREPARING A LAMINATE OF SAID PIECES BY BONDING SAID PIECES WITH A THERMOST ADHESIVE, SO THAT SAID METAL SHEET BONDED SIDES ARE SUBTANTIALLY PARALLEL AND (C) PREPARING A SANDWICH PANEL CONSTRUCTION BY BONDING TWO OUTER METAL LAYERS TO OPPOSITE SIDES OF SAID LAMINATE SUCH THAT SAID LAYERS ARE SUBSTANTIALLY NORMAL TO SAID METAL SHEET SIDES AND SAID METAL SHEET SIDES EXTEND FULLY BETWEEN SAID OUTER LAYERS.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-11-04 1978-05-06 1978-11-05 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-11-04 1982-05-06 1982-11-05 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-11-04 1986-05-06 1986-11-05 $7700.00 Window Closed / Lapsed

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