# US 12,180,702 B2 · Fire-resistant composite structural building panels > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,180,702 B2 - Document ID: US12180702B2 - Status: Granted - Kind: B2 - Application number: 17/517,377 - Filed: 2021-11-02 - Published: 2022-05-05 - Granted: 2024-12-31 - Earliest claimed: 2020-11-04 - Assignees: ROM Development Corp. - Applicants: ROM Development Corp. - Inventors: Richard O'Meara - Web page: https://patentgrep.com/patent/US12180702B2 ## CPC - E04B 1/942: {slab-shaped} - B32B 3/06: for securing layers together; for attaching the product to another member, e.g. to a support {, or to another product, e.g. groove/tongue, interlocking} - B32B 5/024: {Woven fabric} - B32B 5/18: characterised by features of a layer {of} foamed material - B32B 5/245: {another layer next to it being a foam layer} - B32B 5/263: {next to one or more woven fabric layers} - B32B 9/02: comprising animal or vegetable substances {, e.g. cork, bamboo, starch} - B32B 9/046: {of foam} - B32B 9/047: {made of fibres or filaments} - B32B 13/14: next to a fibrous or filamentary layer - E04B 1/6116: {by locking means on lateral surfaces} - B32B 2250/05: 5 or more layers - B32B 2250/40: Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA - B32B 2255/02: on fibrous or filamentary layer - B32B 2255/26: Polymeric coating - B32B 2255/28: Multiple coating on one surface - B32B 2260/021: Fibrous or filamentary layer - B32B 2260/023: Two or more layers - B32B 2260/046: Synthetic resin - B32B 2262/0269: Aromatic polyamide fibres - B32B 2262/101: Glass fibres - B32B 2262/106: Carbon fibres, e.g. graphite fibres - B32B 2266/0264: Polyester - B32B 2307/304: Insulating - B32B 2307/3065: Flame resistant or retardant, fire resistant or retardant - B32B 2307/4023: on the layer surface, e.g. ink - B32B 2307/734: Dimensional stability - B32B 2419/00: Buildings or parts thereof - B32B 2451/00: Decorative or ornamental articles - B32B 2607/00: Walls, panels - E04B 1/6125: {with protrusions on the one frontal surface co-operating with recesses in the other frontal surface} - E04B 2103/02: of ceramics, concrete or other stone-like material - E04C 2/288: composed of insulating material and concrete, stone or stone-like material - E04C 2/528: {Impervious or hermetic panels not otherwise provided for} - E04C 2002/004: {Panels with profiled edges, e.g. stepped, serrated} - E04B: GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS (border constructions of opening in walls, floors or ceilings E06B1/00; {electromagnetic shielding H05K9/0001}) - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM - E04C: STRUCTURAL ELEMENTS; BUILDING MATERIALS (for bridges E01D; specially designed for insulation or other protection E04B; elements used as building aids E04G; for mining E21; for tunnels E21D; structural elements with broader range of application than for building engineering F16, particularly F16S) ## Abstract A composite skinned panel is disclosed which uses, in some embodiments, a combination of cementitious, insulative and ablative core materials to provide a building panel which can effectively meet a variety of different commercial, residential and marine fire codes. For example, one such fire test is an A60 fire rating (International Marine Organization (IMO) A60 Class A Bulkhead), which establishes that the panel provide 60 minutes of protection from a front side temperature of 1750° F. without raising the internal temperature more than 250° F. ## Claims ### Claim 1 A fire-resistant panel comprising: a central structural core having an inside face and an outside face; a first inner reinforcement layer adjacent said inside face of said structural core and a first outer reinforcement layer adjacent said outside face of said structural core; an inner insulative layer adjacent said first inner reinforcement layer and an outer insulative layer adjacent said first outer reinforcement layer; an inner ablative core layer adjacent said first inner insulative layer; and a second inner reinforcement layer adjacent said inner ablative core layer and a second outer reinforcement layer adjacent said outer insulative layer. ### Claim 2 (depends on 1) The fire-resistant panel of claim 1, further comprising: an outer intumescent coating applied to said second outer reinforcement layer and an inner intumescent coating applied to said second inner reinforcement layer. ### Claim 3 (depends on 1) The fire-resistant panel of claim 1, further comprising: an outer ablative core layer adjacent said inner insulative layer. ### Claim 4 (depends on 3) The fire-resistant panel of claim 3, further comprising: an outer intumescent coating applied to said second outer reinforcement layer and an inner intumescent coating applied to said second inner reinforcement layer. ### Claim 5 (depends on 3) The fire-resistant panel of claim 3, wherein an internal temperature of said panel does not exceed 250° F. after said inside and outside faces are exposed to a 1750° F. heat source for 60 minutes. ### Claim 6 (depends on 3) The fire-resistant panel of claim 3, wherein said outer ablative core layer is cork. ### Claim 7 (depends on 1) The fire-resistant panel of claim 1, wherein said central structural core is a cementitious material. ### Claim 8 (depends on 7) The fire-resistant panel of claim 7, wherein said central structural core is a cement board with said first inner and outer reinforcement layers being integrated therewith. ### Claim 9 (depends on 1) The fire-resistant panel of claim 1, wherein said inner and outer insulative layers are PET foam board. ### Claim 10 (depends on 1) The fire-resistant panel of claim 1, wherein said inner ablative core layer is cork. ### Claim 11 (depends on 1) The fire-resistant panel of claim 1, wherein said first and second, inner and outer reinforcement layers are formed from reinforcing fabric and resin. ### Claim 12 (depends on 11) The fire-resistant panel of claim 11, wherein said reinforcing fabric is selected from the group consisting of: glass fiber, carbon fiber and para-amid synthetic fiber. ### Claim 13 (depends on 1) The fire-resistant panel of claim 1, wherein an internal temperature of said panel does not exceed 250° F. after said inside face is exposed to a 1750° F. heat source for 60 minutes. ### Claim 14 (depends on 1) The fire-resistant panel of claim 1, said panel having a rectangular shape with at least two opposing edges, wherein one of said edges has a mortise joint formed therein and said opposing edge has a corresponding tenon formed therein. ### Claim 15 A fire-resistant panel comprising: a central reinforcement layer having an inside face and an outside face, said central reinforcement layer being formed from a reinforcing fabric and resin; an inner foam insulative layer adjacent said inside face of said central reinforcement layer and an outer foam insulative layer adjacent said outside face of said central reinforcement layer, wherein said inner and outer insulative layers are PET foam board; an outer reinforcement layer adjacent said outer foam insulative layer, and an inner reinforcement layer adjacent said inner foam insulative layer; and an outer intumescent coating applied to said outer reinforcement layer and an inner intumescent coating applied to said inner reinforcement layer. ### Claim 16 (depends on 15) The fire-resistant panel of claim 15, wherein said central and inner and outer reinforcement layers are formed from reinforcing fabric and resin. ### Claim 17 (depends on 16) The fire-resistant panel of claim 16, wherein said reinforcing fabric is selected from the group consisting of: glass fiber, carbon fiber and para-amid synthetic fiber. ### Claim 18 (depends on 15) The fire-resistant panel of claim 15, wherein an internal temperature of said panel does not exceed 250° F. after said inside and outside faces are exposed to a 1750° F. heat source for 60 minutes. ### Claim 19 (depends on 15) The fire-resistant panel of claim 15, said panel having a rectangular shape with at least two opposing edges, wherein one of said edges has a mortise joint formed therein and said opposing edge has a corresponding tenon formed therein.