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US3730823A Expired / Lapsed US ⏱️ 0.0 years remaining

Edging material for application to the edges of substrates

Assignee: Westvaco Corp
•
Filing: 1971-08-30
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Granted: 1973-05-01
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Expires: 1991-08-30
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Abstract

Abstract A DECORATIVE, FUNCTIONAL EDGING MATERIAL FOR APPLICTION TO THE EDGES OF PANELS OR SUBSTRATES. THE EDGING MATERIAL IS A POLYESTER RESIN IMPREGNATED PAPER SHEET COATED ON THE BACK SIDE WITH A HIGH VISCOSITY THERMOSETTING HOT-MELT GLUE. THE BASE OF THE EDGING MATERIAL IS A SINGLE SHEET OF PAPER, PREFERABLY AN ALPHA CELLULOSE OR KRAFT SATURATING PAPER HAVING A BASIS WEIGHT OF AT LEAST 65 POUNDS, IMPREGNATED WITH A POLYMERIZABLE UNSATURATED POLYESTER RESIN. THE HOT-MELT GLUE IS AN ETHYLENE-VINYL ACETATE COPOLYMER, HAVING CERTAIN DEFINITE CHARACTERISITCS WHICH ENABLE THE EDGING TO ECOME PERMANENTLY BONDED TO THE EDGE PANEL SURFACE UNDER TEMPERATURE AND PRESSURE. THE SHEET, IMPREGNATED WITH A POLYMERIZABLE POLYESTER RESIN, IS SUITABLY CURED TO GIVE A NON-CRACKING EDGING MATERIAL, COATED WITH THE HOT-MELT GLUE, AND CUT INTO STRIPS OF SUITABLE WIDTHS AND WOUND INTO ROLLS.

Inventors

  • 👤 L Veneziale

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 15:29
CPC Classifications
B; B44; B44C; B44C5/00; B44C5/04; B05; B05B; B05B12/00; B05B12/16; B05B12/20; B05B12/24; C; C09; C09J; C09J7/00; C09J7/20; C09J7/21; C09J7/30; C09J7/35; Y; Y10; Y10T; Y10T428/00; Y10T428/27; Y10T428/273; Y10T428/277

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

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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) 1976-04-30 1976-10-30 1977-05-01 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-04-30 1980-10-30 1981-05-01 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-04-30 1984-10-30 1985-05-01 $7700.00 Window Closed / Lapsed

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