US4176115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire-resistant construction material
Assignee: US PLYWOOD Corp A CORP OF
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Filing: 1977-05-06
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Granted: 1979-11-27
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Expires: 1997-05-06
Abstract
Abstract A fire-resistant construction material is disclosed. This construction material is composed of an incombustible component, ordinarily including flame-retardant and intumescent agents, intimately dispersed and fixed into a rigid panel by a binder of melamine formaldehyde resin.
Inventors
- 👤 Seymour Hartman
- 👤 Catherine M. Sheridan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:08
CPC Classifications
C; C04; C04B; C04B26/00; C04B26/02; C04B26/10; C04B26/12; C04B26/125; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
63 words
A method for producing a fire-resistant construction material comprising preparing an essentially anhydrous, powdered and homogenously admixed blend comprising at least one incombustible component and from about 30 to 70% by total weight of melamine formaldehyde resin and applying sufficient heat and pressure to cure said resin and transform said blend into a rigid, continuously adherent network having a predetermined construction material configuration.
Claim 2
Independent Claim
63 words
A method for producing a fire-resistant construction material comprising preparing an essentially anhydrous, powdered and homogenously admixed blend comprising at least one incombustible component and from about 30 to 70% by total weight of melamine formaldehyde resin and applying sufficient heat and pressure to cure said resin and transform said blend into a rigid, continuously adherent network having a predetermined construction material configuration.
Claim 3
Dependent Claim
26 words
The process of claim 1, wherein the incombustible component is selected from the group consisting of a non-flammable inorganic mineral, an intumescent agent and admixtures thereof.
Claim 4
Dependent Claim
25 words
The process of claim 1, wherein the incombustible component is selected from the group consisting of perlite, asbestos, ammonium phosphate, pentaerythritol, dicyandiamide and admixtures thereof.
Claim 5
Dependent Claim
38 words
The process of claim 1, wherein the blend comprises up to about 40% by total weight of a non-flammable inorganic mineral, an intumescent agent and from about 30 to about 70% by total weight of melamine formaldehyde resin.
Claim 6
Dependent Claim
11 words
The process of claim 4, wherein said blend additionally contains dicyandiamide.
Claim 7
Dependent Claim
40 words
A fire-resistant construction panel formed of an anhydrous homogeneously admixed blend of at least one incombustible component bound and cured with melamine formaldehyde resin present in an amount from about 30% to about 70% by total weight of the blend.
Claim 8
Dependent Claim
40 words
A fire-resistant construction panel formed of an anhydrous homogeneously admixed blend of at least one incombustible component bound and cured with melamine formaldehyde resin present in an amount from about 30% to about 70% by total weight of the blend.
Claim 9
Dependent Claim
31 words
The fire resistant construction panel as claimed in claim 6 wherein the incombustible component is selected from the group consisting of a non-flammable inorganic mineral, an intumescent agent and admixtures thereof.
Claim 10
Dependent Claim
30 words
The fire resistant construction panel as claimed in claim 6 wherein the incombustible component is selected from the group consisting of perlite, asbestos, ammonium phosphate, pentaerythritol, dicyandiamide, and admixtures thereof.
Claim 11
Dependent Claim
37 words
The fire resistant construction panel as claimed in claim 6 wherein the admixed blend further comprises up to about 40° by total weight of said incombustible component formed of a non-flammable inorganic mineral and an intumescent agent.
Claim 12
Dependent Claim
17 words
The fire resistant construction panel as claimed in claim 9 wherein said construction panel further includes dicyandiamide.
References Cited (Backward Citations)
US2600455A
Cited
US3008926A
Cited
US3037951A
Cited
US3792020A
Cited
US3789041A
Cited
US3934066A
Cited
US3955987A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-11-26 | 1983-05-28 | 1983-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-26 | 1987-05-28 | 1987-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-26 | 1991-05-28 | 1991-11-27 | $7700.00 | Window Closed / Lapsed |