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Class Information
Number: 52/656.3
Name: Static structures (e.g., buildings) > Openwork; e.g., truss, trellis, grille, screen, frame, or rebar chair > Outside corner or peripherally bordered (i.e., framing, etc.) > Portal frame or closure frame > Fireproof
Description: Subject matter wherein the frame or associated door comprises material, or is constructed in a fashion, which specifically serves as a block to extreme heat or flame.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6705047 |
Door and door closer assembly |
Mar. 16, 2004 |
| 6425221 |
Method of fabricating muntin bars for simulated divided lite windows |
Jul. 30, 2002 |
| 5943824 |
Fire rated, hinged, swinging door |
Aug. 31, 1999 |
| 5860268 |
Light-weight concrete door |
Jan. 19, 1999 |
| 5694731 |
Fire resistant frame structure for windows, doors, facades or glass roofs |
Dec. 9, 1997 |
| 5687532 |
Fire endurance rated plastic articles for use in fire rated assemblies |
Nov. 18, 1997 |
| 4993203 |
Fireproof frame structure in a building opening portion |
Feb. 19, 1991 |
| 4603524 |
Fire resistant glazing system |
Aug. 5, 1986 |
| 4550542 |
Vision panel frame |
Nov. 5, 1985 |
| 4513552 |
Sheet aluminum fireproof construction element |
Apr. 30, 1985 |
| 4397116 |
Fire resistant door |
Aug. 9, 1983 |
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