Sand, Clay, Or Crushed Rock Or Slate Patents (Class 428/150)
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Patent number: 4717614Abstract: A rectangular shingle sheet having a butt portion which is longitudinally divided into spaced apart tab segments and an undivided headlap portion which is 1.3 to 1.5 times higher than the outward extensions of said tab segments in said butt portion; said butt portion and headlap portion carrying an asphaltic backing of varying thickness Wherein the upper area of the headlap portion which is of a height approximately equal to that of the butt portion is coated with an asphaltic backing of between about 5 and about 15 mils thickness and the remaining lower area of the headlap portion and the entire butt portion is unifomly coated with an asphaltic backing of between about 20 and about 75 mils thickness. In one embodiment, the shingle is a composite roofing shingle comprising a shingle sheet having a butt portion which is longitudinally divided into tab segments spaced apart by between about 0.5 and about 1.5 their width and an undivided headlap portion which is between about 1.3 and about 1.Type: GrantFiled: February 14, 1986Date of Patent: January 5, 1988Assignee: GAF CorporationInventors: Alfredo A. Bondoc, Duane A. Davis, Stanley P. Frankoski, Bruno E. Magnus
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Patent number: 4699834Abstract: A intermediate floor which shields a cementitious or tile top floor from the cracking of the original floor and comprises an asphaltic layer having on its upper surface finely divided stone and an open mesh layer on the stone layer. Where the original floor is concrete, the mesh layer is flexible plastic. Where the original floor is wood, the mesh layer is galvanized metal, staples being provided to hold the asphalt and mesh layers on the original floor.Type: GrantFiled: October 20, 1986Date of Patent: October 13, 1987Inventor: Henry Schiffer
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Patent number: 4693923Abstract: A waterproofing sheet used to waterproof structures above and below grade has a single layer of non-degradable, water impermeable polymeric membrane that has layers of particles of non-hydrated sodium montmorillonite (sodium bentonite) adhering to the membrane in a uniform layered thickness. The layers of particles of sodium montmorillonite spaced from the membrane adhere to each other, with a coating material (adhesive) that is designed to provide the necessary performance for waterproofing under a high water head (hydrostatic pressure). The material is in sectioned sheet or roll form and can be easily applied on the job.Type: GrantFiled: November 22, 1985Date of Patent: September 15, 1987Inventors: Bryan M. McGroarty, Patrick J. McGroarty
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Patent number: 4680907Abstract: A building material for cement based facing such as stucco and brick facing. A thin layer of water impervious epoxy is applied to one side of a wallboard or plywood sheeting. Sand is imbedded in the epoxy in a manner to fully cover the epoxy. The sand surface provides a compatible bonding surface for stucco and mortar which are then applied in a conventional manner.Type: GrantFiled: October 28, 1985Date of Patent: July 21, 1987Inventor: Richard D. Williams
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Patent number: 4645703Abstract: A magnetic recording medium comprises steep mountain-shaped protrusions having heights ranging 50-600 .ANG. and distributed at a rate of 1.times.50.sup.5 -1.times.10.sup.8 protrusions/mm.sup.2 on a surface of ferromagnetic metal layer and further thereon a lubricant layer; the magnetic recording medium is suitable for VTR tape which has a satisfactory durability for repeated use and eliminates head clogging and squealing.Type: GrantFiled: October 10, 1985Date of Patent: February 24, 1987Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Takashi Suzuki, Kunio Hibino, Mikio Murai, Shigeki Kawase, Koichi Shinohara, Norimoto Nouchi
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Patent number: 4636409Abstract: An ink-jet recording medium is characterized in that the recording surface thereof is formed of a mixture of at least a filler and parts of a fibrous base material and that parts of the fiber composing the fibrous base material are laid very closely to the recording surface.Type: GrantFiled: September 13, 1984Date of Patent: January 13, 1987Assignee: Canon Kabushiki KaishaInventors: Ryuichi Arai, Shigeo Toganoh
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Patent number: 4606963Abstract: A synthetic clay court composition is provided having a first aggregate-containing elastomeric lamina applied to a substrate. Prior to the elastomer curing aggregate is broadcast over the elastomer in an amount sufficient to form a second free-flowing lamina.Type: GrantFiled: February 27, 1985Date of Patent: August 19, 1986Inventor: Dominic L. Farrell
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Patent number: 4585685Abstract: The present invention relates to acoustically porous building materials which are produced by disposing an aggregate material on the surface of a dry-formed web comprising a fibrous material and an organic binder, and consolidating the composite material such that the aggregate material is embedded in the web. The resulting product is acoustically porous but, in one preferred embodiment, the embedding process provides a substantially planar surface which is relatively non-friable.Type: GrantFiled: January 14, 1985Date of Patent: April 29, 1986Assignee: Armstrong World Industries, Inc.Inventors: John S. Forry, Karl B. Himmelberger
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Patent number: 4581090Abstract: A surface reconditioning arrangement characterized by the application of successive layers of an adhesive material, such as varnish, and a granular material, such as sand, onto an imperfect or weathered surface, as, for example, a vinyl automobile roof top, roofing and siding for building structures, and the like. The arrangement is such that the aforesaid surface becomes reconditioned for longer life and, as well, presents a like new appearance. Moreover, the finished surface affords optimum physical properties, including, oftentimes, a decorative glistening effect. The granular material is typically contained within a reservoir which, upon actuation of an air valve, is caused to pass from a portable distributor onto the desired surface, thus overlaying the latter by combining successive passes of granular material and adhesive material.Type: GrantFiled: August 15, 1983Date of Patent: April 8, 1986Inventor: Hal R. Snyder
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Patent number: 4567084Abstract: A multilayered corrugated roofing which comprises a corrugated heat proof substrate and an overlaying layer formed of a coherent substance constituted of dolomite, magnesite, white cement and water. Serpentine or calcite may also be incorporated with the above constituents. Either roasted or unroasted dolomite or magnesite can be used.Type: GrantFiled: March 12, 1984Date of Patent: January 28, 1986Inventor: Lin Juei Jse
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Patent number: 4542059Abstract: A recording medium made of a substrate coated with a layer containing both a filler and a binder is characterized in that irregular shapes of filler particles appear at the surface of the coating layer.Type: GrantFiled: August 17, 1983Date of Patent: September 17, 1985Assignee: Canon Kabushiki KaishaInventors: Shigeo Toganoh, Ryuichi Arai
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Patent number: 4529625Abstract: A light-weight, roofing membrane, for application upon building roofs, formed of a fibrous sheet having one of its surfaces coated with a thin, continuous layer of asphalt bonded only to the outermost portion of the surface of the sheet, with the voids and crevices between the fibers, within the body of the sheet, being substantially free of asphalt. The membrane is made by chilling one surface of a fibrous sheet while flowing heated asphalt upon the opposite surface of the sheet and rapidly cooling the deposited asphalt so that it solidifies and bonds to the surface portion only of the sheet fibers before it flows into the body of the sheet. A layer of fine particles of silica-like sand is applied to the exposed surface of the asphalt and bonded thereto by the asphalt.Type: GrantFiled: February 8, 1984Date of Patent: July 16, 1985Assignee: Northern Fibre Products CompanyInventors: Richard T. Reidenbach, Harry J. Rozek
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Patent number: 4521478Abstract: The invention comprises a built-up roof material that has a composite membrane that is formed and affixed to the roof substrate in a single step. The membrane comprises a sheet of heat-resistant, non-woven polyester sandwiched between layers of asphalt. The upper asphalt layer is caused to flow through the polyester and meld with the lower layer of asphalt to form a homogeneous composite.Type: GrantFiled: August 20, 1984Date of Patent: June 4, 1985Inventor: John P. Hageman
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Patent number: 4520062Abstract: Highly abrasion-resistant transfer coatings are provided on a wide variety of substrates, thermoplastic or thermosetting, by transfer coating from a mold surface or a flexible web, such as by use of a heat transfer tape, an ultra-thin coating consisting essentially of a non-resinous binder material such as microcrystalline cellulose together with mineral abrasive particles, preferably alumina or a mixture of silica and alumina which have been heated together at a temperature of at least 140.degree. F., the ultra-thin coating also preferably containing a silane and a small quantity of a sticking agent such as a thermoplastic or thermosetting resin.Type: GrantFiled: September 2, 1983Date of Patent: May 28, 1985Assignee: Nevamar CorporationInventors: Israel S. Ungar, Herbert I. Scher, Nelson L. O'Neill
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Patent number: 4518641Abstract: Rounded quartz sand particles (22) are each enclosed in a hardenable resin skin (23) which is integrated with the skins on adjacent particles and which creates a binding of the particles to a primed base (20, 21). A significant fraction of the particles may be remote from the base and only integrated with adjacent particles so that a contoured or embossed effect is created to provide a supplementary non-slip feature. In a process for forming such a surface coating the particles are wetted with a functional liquid, mixed with a binder related to the functional liquid and sprayed. The spraying process is powered by a progressive cavity pump (37) with a selection of particle/resin ratio such that the pump operates under a Sigma effect.Type: GrantFiled: February 16, 1983Date of Patent: May 21, 1985Assignee: Reed International P.L.C.Inventors: Bryan F. Shimmin, James B. Pollard
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Patent number: 4517235Abstract: Highly abrasion-resistant transfer coatings are provided on a wide variety of substrates, thermoplastic or thermosetting, by transfer coating from a mold surface or a flexible web, such as by use of a heat transfer tape, an ultra-thin coating consisting essentially of a non-resinous binder material such as microcrystalline cellulose together with mineral abrasive particles, preferably alumina or a mixture of silica and alumina which have been heated together at a temperature of at least 140.degree. F., the ultra-thin coating also preferably containing a silane and a small quantity of a sticking agent such as a thermoplastic or thermosetting resin.Type: GrantFiled: November 16, 1982Date of Patent: May 14, 1985Assignee: Nevamar CorporationInventors: Israel S. Ungar, Herbert I. Scher, Nelson L. O'Neill
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Patent number: 4473610Abstract: To a substrate is added a plurality of layers of materials comprising: a first layer of thermoplastic acrylic resin, to which is added a layer of aluminum foil. Over the aluminum foil is added a layer of the resin and to the top surface of the resin is added a layer of chopped strand fiber glass mat. Over the fiber glass mat is added a layer of the resin and on top of the resin is added a finish coat of paint.In some applications aggregate material is added to the finish coat of paint.Type: GrantFiled: April 13, 1983Date of Patent: September 25, 1984Inventor: Lester Davis
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Patent number: 4460635Abstract: A method of coating articles, a coating and a coated article wherein a bitumen primer layer is applied to a base sheet material and while the bitumen primer layer is still wet a layer of a barrier material of a consistency, composition and thickness is applied to the primer layer such that the bitumen primer layer does not bleed through the barrier layer and the barrier layer adheres to the bitumen primer layer. A coating of stone chips is then applied to the barrier layer in a manner such that the stone chips are partially embedded at least in the barrier layer so that the stone chips are held in position on curing of the bitumen primer and barrier layer but the stone chips are not completely covered by the barrier layer.Type: GrantFiled: July 22, 1983Date of Patent: July 17, 1984Assignee: AHI Operations LimitedInventors: Graham T. Jones, Warren S. Dow, Geoffrey L. Wearne
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Patent number: 4447485Abstract: An adhesive tape comprises a base sheet of a polypropylene resin, an adhesive layer formed on one side of the base sheet and a roughened surface layer formed on the other side of the base sheet and composed of a polypropylene resin containing fine inorganic filler particles, in which the roughened surface layer has a thickness of not more than the maximum particle diameter of said fine inorganic filler particles and is substantially free from voids or cracks, and the total percent light transmittance of the tape is at least 90%.Type: GrantFiled: July 12, 1982Date of Patent: May 8, 1984Assignee: Mitsubishi Plastics Industries LimitedInventor: Toshiyuki Aritake
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Patent number: 4430375Abstract: An abrasion-resistant laminate is prepared by providing an ultra thin coating of mineral particles and micro crystalline cellulose on the surface of conventional printed paper, followed by impregnating the paper with a conventional laminating resin, and then using the print paper so obtained in a laminating process without the necessity of using an overlay sheet.Type: GrantFiled: April 15, 1983Date of Patent: February 7, 1984Assignee: Nevamar CorporationInventors: Herbert I. Scher, Israel S. Ungar
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Patent number: 4418111Abstract: A composition is disclosed, which when applied to the surface of a paper product, such as a corrugated board, improves the slip-angle. The composition, consisting of an aqueous suspension of colloidal silica and urea, finds particular utility in products resulting from recycled paper.Type: GrantFiled: August 9, 1982Date of Patent: November 29, 1983Assignee: Key Tech CorporationInventor: Ronald Carstens
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Patent number: 4396686Abstract: A roofing element for roofs of civil and industrial buildings comprising a layer of expanded polyurethane having high thermal insulation capacity, a support made of zinc-plated sheet steel overlying said layer of expanded polyurethane and adhering thereto at all points, a thin layer of a bituminous compound and a continuous layer of stone material in fine scales caused to adhere to said thin layer of bituminous compound.Type: GrantFiled: October 8, 1982Date of Patent: August 2, 1983Inventor: Guido Fiorio
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Patent number: 4395452Abstract: An abrasion-resistant laminate is prepared by providing an ultra thin coating of mineral particles and micro crystalline cellulose on the surface of conventional printed paper, followed by impregnating the paper with a conventional laminating resin, and then using the print paper so obtained in a laminating process without the necessity of using an overlay sheet.Type: GrantFiled: September 2, 1981Date of Patent: July 26, 1983Assignee: Nevamar CorporationInventors: Herbert I. Scher, Israel S. Ungar
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Patent number: 4378408Abstract: Roofing granules coated with insolubilized reaction product of a coating composition comprising water, kaolin clay, sodium silicate, pigment, and gas forming compound such as hydrogen peroxide or sodium perborate.Type: GrantFiled: February 11, 1981Date of Patent: March 29, 1983Assignee: GAF CorporationInventor: Ingo B. Joedicke
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Patent number: 4374167Abstract: Disclosed is a coating composition rapidly curable at room temperature in presence of a vaporous tertiary amine catalyst and possessing a flexibility sufficient for a zero-T bend on metal and a mar resistance of at least about 2,000 grams as borne by the edge of a nickel passed on said film. The coating composition is a phenolic-terminated-polyester and multi-isocyanate curing agent (at least about 10% aromatic isocyanate content) dispersed in a fugitive organic solvent, and a mar-resisting aid of an organic compound physically incompatible in said coating composition and having an effective chain length of at least about 12 carbon atoms. Application of the coating composition preferably is on a flexible substrate such as a thermoplastic substrate.Type: GrantFiled: April 5, 1982Date of Patent: February 15, 1983Assignee: Ashland Oil, Inc.Inventor: James R. Blegen
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Patent number: 4348446Abstract: A biaxially oriented polyester film containing fine particles of insoluble inert substance, has a kinetic coefficient of friction of not more than 0.3, and has microscopic protrusions integrated thereto, said protrusion having an peak-to-valley height of not more than 1 micron mostly range of 0.2 to 0.5 micron. The film having improved slipperiness is useful as the base film of magnetic recording tape for a video tape recorder or a computer data storage.Type: GrantFiled: September 4, 1980Date of Patent: September 7, 1982Assignee: Teijin LimitedInventors: Yukio Mitsuishi, Shigeru Shiozaki, Takao Chujo, Takeyuki Yokoyama
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Patent number: 4342804Abstract: This under-roofing material for roofs to be covered with tiles, slates and the like consists of a sheet of agglomerated fibres coated on one face with a layer of bitumen just sufficient for constituting when cooled a micro-perforated structure preventing the passage of liquid by capillarity while permitting the passage or air or vapor, this material having a strength sufficient to withstand the fall of objects or personnel during its use, and being essentially liquid-tight and pervious to air and vapors.Type: GrantFiled: September 25, 1980Date of Patent: August 3, 1982Assignee: Siplast S.A.Inventor: Jean-Yves Meynard
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Patent number: 4327141Abstract: An abrasion-resistant laminate is prepared by providing an ultra thin coating of micro-crystalline cellulose overcoated with an ultra thin layer of mineral particles and micro crystalline cellulose on the surface of conventional printed paper, followed by impregnating the paper with a conventional laminating resin, and then using the print paper so obtained in a laminating process without the necessity of using an overlay sheet.Type: GrantFiled: April 1, 1980Date of Patent: April 27, 1982Assignee: Nevamar CorporationInventors: Herbert I. Scher, Israel S. Ungar
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Patent number: 4318950Abstract: A laminated structure forming a synthetic paper made of a base or backing film layer made of a thermoplastic resin in a biaxially oriented state. A paper-like film layer is laminated to the base film layer and comprises a thermoplastic resin having 0.5 to 65% by weight of particles of a fine, inorganic filler dispersed in the resin thereof substantially uniformly. The paper-like film layer is in an uniaxially oriented state and has microvoids dispersed therein formed by stretching the laminated films in a heated state. The microvoids comprise microvoids open to a surface of the paper-like film layer free of the base film layer and include microvoids, open and closed, distributed in the paper-like film layer defining therein a cellular, fibrous structure.Type: GrantFiled: August 14, 1978Date of Patent: March 9, 1982Assignee: Mitsubishi Petrochemical Co., Ltd.Inventors: Masanori Takashi, Mitsuo Yoshiyasu
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Patent number: 4309471Abstract: A magnetic audio-recording tapes based on finely-divided ferromagnetic alloy materials are disclosed which have improved surface characteristics. The improvement of recording and playback characteristics is specifically exhibited in a reduction in modulation noise.Type: GrantFiled: June 7, 1979Date of Patent: January 5, 1982Assignee: Fuji Photo Film Co., Ltd.Inventors: Masaaki Suzuki, Masashi Aonuma, Yasuo Tamai
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Patent number: 4305987Abstract: An abrasion-resistant laminate is prepared by providing an ultra thin coating of mineral particles and micro crystalline cellulose on the surface of conventional printed paper, followed by impregnating the paper with a conventional laminating resin, and then using the print paper so obtained in a laminating process without the necessity of using an overlay sheet.Type: GrantFiled: April 1, 1980Date of Patent: December 15, 1981Assignee: Nevamar CorporationInventors: Herbert I. Scher, Israel S. Ungar
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Patent number: 4304807Abstract: A magnetic recording tape comprising a polyethylene terephthalate substrate and a magnetic material-containing layer closely adhered onto the substrate, which tape exhibits a reduced envelope variation. The polyethylene terephthalate substrate satisfies the formula:0.051H.sub.1 -0.59A+0.14 .DELTA.n+0.0015 (H.sub.2 -66.67).sup.2 +50.92.ltoreq.20wherein A is the average particle size of the polyethylene terephthalate crystals as determined from the half height width by X-ray diffractometry, and H.sub.1 is the average number of projections present in a unit area of 1 mm.sup.2 on the surface of the substrate, which projections have a height falling within the range of from 0.27 to 0.53 micron, H.sub.2 is the average number of projections similar to H.sub.1 above but having a height falling within the range of from 0.54 to 0.80 micron, rather than 0.27 to 0.53 micron, and .DELTA.n is the birefringence of the substrate.Type: GrantFiled: June 19, 1979Date of Patent: December 8, 1981Assignee: TDK Electronics Co. Ltd.Inventors: Yoshio Kawakami, Yoneo Matsuzawa
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Patent number: 4296167Abstract: A seal coat for use in a traffic surface is formed by reacting a first component comprising a liquid epoxy resin and a blocked polyisocyanate prepolymer with a second component comprising an aliphatic or cycloaliphatic polyamine, and allowing the mixture to cure. Advantageous results are achieved if the mixture, before curing, is allowed to impregnate a matrix, e.g. a non-woven synthetic material.Type: GrantFiled: March 10, 1980Date of Patent: October 20, 1981Inventor: Marcel Ceintrey
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Patent number: 4267221Abstract: An architectural panel produced by forming a raised or depressed pattern in the surface of a base plate and sprinkling and sticking particulate material to both or either of the depressions and protrusions to provide the architectural panel with an excellent three-dimensional effect by virtue of the combined effect of the pattern and the particulate material. According to one form of the invention, an architectural panel having an excellent three-dimensional effect and massiveness is produced by using a metallic base plate and overcoming the feeling of smoothness and lightness peculiar to metallic material with the combined effect of such pattern and particulate material. According to another form of the invention, an architectural panel is produced by applying a base coat layer and/or an overcoat layer to a base plate to provide an excellent design quality and protection against fall-off of the particulate material.Type: GrantFiled: April 9, 1980Date of Patent: May 12, 1981Inventor: Takashi Ishikawa
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Patent number: 4267222Abstract: A building panel comprising, when completed, a substantially rigid polyester resin building mass in sheet form having molded therein a plurality of closely compacted porous scoria rock particles of varied size in range of 1/4 to 11/4 inch diameter size and each comprising vesicules of varied size in range of 0.1 to 0.5 millimeters diameter that occupy the major portion of the volume of each such particle, such particles being compacted to form a substantially incompressible mass, said polyester resin being of substantial tensile strength and extending between the rock particles and including fingerlike intrusions extending into the larger vesicules of the rock particles and holding the rock particles together, said compacted rock particles substantially filling the entire volume of the polyester resinous mass, and including portions extending beyond the volume occupied by such polyester resin mass.Type: GrantFiled: June 14, 1978Date of Patent: May 12, 1981Inventor: Eugene D. Sanders
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Patent number: 4205109Abstract: A flexible anti-skid material for application to various outdoor and indoor surfaces to produce a long lasting, low-cost, non-skid waterproof surface is formed of a smooth layer of paint adhered to one side of a flexible carrier material and one or more layers of paint each having particles of sand embedded therein adhered to the other side of the flexible carrier material, the anti-skid material being applied to desired surfaces with the use of an adhesive. A method of making the flexible anti-skid material includes coating a hard, smooth substrate with paint, placing a flexible carrier material on the coating of paint, coating the flexible carrier material with paint, distributing sand on the coating of paint, repeating the latter two steps to produce a desired thickness for the anti-skid material, allowing the anti-skid material to dry, and removing the substrate.Type: GrantFiled: November 14, 1978Date of Patent: May 27, 1980Inventors: Jerry France, James P. Morgan
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Patent number: 4160761Abstract: Plastic articles of the type utilized in floor and highway markings and in constructing industrial flooring for the support of heavy machinery and vehicle traffic among others are provided. These articles are filled resinous articles fabricated of recycled thermoplastic resinous materials which may contain impurities.Type: GrantFiled: May 4, 1978Date of Patent: July 10, 1979Assignee: Architectural Research CorporationInventors: Richard C. Prusinski, Jan R. Prusinski
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Patent number: 4136215Abstract: The invention disclosed is a process for the production of a cellular thermosetting foam provided on at least one surface with a reinforcing and fire resisting layer of particulate material. A foamable composition is distributed on a suitable substrate surface and a layer of particulate material is evenly distributed on the surface of said composition prior to complete curing. As inexpensive material such as sand or gravel may be used, the process is economic and easy to apply. It can be used for the production of slabs of cellular plastic or of foam layers with a protective coating on e.g. wall panels, roofs, insulating material and the like.Type: GrantFiled: January 15, 1976Date of Patent: January 23, 1979Assignee: Stamicarbon, B.V.Inventors: Marinus J. A. M. den Otter, Anne TE Nijenhuis
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Patent number: 4091135Abstract: A novel self-adhesive type multi-layer laminated bituminous roofing membrane suitable for the formation of the roofing or waterproofing layer on roofs, floors and the like is provided. It comprises a base sheet of a sheet-like material, one or more bitumen layers coated on all or part of one or both faces of the base sheet, at least one layer of compound bitumen including both bitumen and rubber and/or resin laminated on all or part of the surface of said bitumen-coated layer on the base sheet and at least one release sheet laid over the whole surface of said compound bitumen layer.This roofing membrane is produced by uniting the bitumen-coated base sheet and the compound bitumen-coated release sheet, and can be applied over a substrate in a simple manner, without the step of melting or liquefying bitumen as in the conventional application process.Type: GrantFiled: May 12, 1977Date of Patent: May 23, 1978Assignee: Tajima Roofing Co., Ltd.Inventors: Eiichi Tajima, Kaname Yamamoto, Takayoshi Imai
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Patent number: 4039706Abstract: A novel self-adhesive type multi-layer laminated bituminous roofing membrane suitable for the formation of the roofing or waterproofing layer on roofs, floors and the like is provided. It comprises a base sheet of a sheet-like material, one or more bitumen layers coated on all or part of one or both faces of the base sheet, at least one layer of compound bitumen including both bitumen and rubber and/or resin laminated on all or part of the surface of said bitumen-coated layer on the base sheet and at least one release sheet laid over the whole surface of said compound bitumen layer.This roofing membrane is produced by uniting the bitumen-coated base sheet and the compound bitumen-coated release sheet, and can be applied over a substrate in a simple manner, without the step of melting or liquefying bitumen as in the conventional application process.Type: GrantFiled: May 8, 1975Date of Patent: August 2, 1977Assignee: Tajima Roofing Co., Ltd.Inventors: Eiichi Tajima, Kaname Yamamoto, Takayoshi Imai
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Patent number: 3973510Abstract: A submersible object having a drag reducing coating thereon, and a method r its preparation, which comprises applying to the object a binding agent and sufficient hydrophobic silica to provide the object with a nonuniform coating, the function of the binding agent being merely to fix the hydrophobic silica on the submersible object.Type: GrantFiled: September 9, 1974Date of Patent: August 10, 1976Assignee: The United States of America as represented by the Secretary of the NavyInventors: Charles R. McCulloch, Robert C. Gill
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Patent number: 3952129Abstract: A color-forming composition and recording sheets embodying the composition are disclosed, wherein the color-forming composition comprises: (a) a leuco dye, (b) an aromatic secondary amine or derivative thereof and (c) an organic solvent.Type: GrantFiled: December 17, 1973Date of Patent: April 20, 1976Assignee: Fuji Photo Film Co., Ltd.Inventors: Hiroharu Matsukawa, Takao Hayashi
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Patent number: RE32152Abstract: An abrasion-resistant laminate is prepared by providing an ultra thin coating of mineral particles and micro crystalline cellulose on the surface of conventional printed paper, followed by impregnating the paper with a conventional laminating resin, and then using the print paper so obtained in a laminating process without the necessity of using an overlay sheet.Type: GrantFiled: November 4, 1983Date of Patent: May 20, 1986Assignee: Nevamar CorporationInventors: Herbert I. Scher, Israel S. Ungar