| Patent Number |
Title Of Patent |
Date Issued |
| 5002696 |
Expanded mineral particles and apparatus and method of production |
March 26, 1991 |
| A non-porous, substantially hollow, expanded mineral product, such as expanded perlite, is produced by uniformly and indirectly heating ore for about 1 to 30 seconds in an expansion chamber maintained at about 1400.degree. F.-2100.degree. F. to produce uncoated particles which exhibi |
| 4671973 |
Method for the treatment of mineral extender fillers |
June 9, 1987 |
| This invention provides a method for the treatment of mineral extender fillers. The mineral extender filler is treated essentially simultaneously with a halogenated organosilane and a compound containing an active hydrogen, preferably ammonia. The reaction is conducted at atmospheric |
| 4521182 |
Method and apparatus for heating particulate material |
June 4, 1985 |
| Particulate material is heated by directing a flame downwardly along the central axis of a vertically disposed furnace. The particulate material is introduced at a number of locations distributed radially around the flame at the upper end of the furnace. The particulate material is direc |
| 4313997 |
Perlite boards and method for making same |
February 2, 1982 |
| Perlite board made from expanded perlite and a binder having the property of permanent tackiness in the dry state. The board may be made by expanding the perlite, adding a tacky resin emulsion to the perlite, drying the mixture and forming it into a board-like product. |
| 4302344 |
Loose-fill, thermal insulation |
November 24, 1981 |
| Fire resistant, loose-fill, thermal insulation made of a mixture of particulate expanded perlite and cellulose fiber. The mixture is rendered non-settling and resistant to separation by applying a permanently tacky material to the particulate expanded perlite. |
| 4255489 |
Perlite filler |
March 10, 1981 |
| Expanded perlite is coated with polysiloxane, the coating dried, and subsequently strengthened by heating to form an attrition-resistant, non-porous, particulate filler suitable for inclusion in polymeric materials to reduce their bulk density. |
| 4212755 |
Settle resistant loose-fill perlite insulation comprising particles rendered slightly tacky by a |
July 15, 1980 |
| Thermal insulation of particulate expanded perlite that forms a low density, settle-resistant mass due to the coating of the perlite particles with a material rendering the individual particles slightly tacky. |
| 4187174 |
Diatomaceous earth filteraid and method for its manufacture |
February 5, 1980 |
| A method is provided for treating diatomaceous earth filteraids having a beer-soluble iron content of less than about 0.01% to further reduce the beer-soluble iron content by maintaining the filteraids in contact with a relatively small volume of an acid. In the filteraids so produced, t |
| 4183980 |
Perlite filler coated with polydimethylsiloxane |
January 15, 1980 |
| Expanded perlite is coated with polysiloxane, the coating dried, and subsequently strengthened by heating to form an attrition-resistant, non-porous, particulate filler suitable for inclusion in polymeric materials to reduce their bulk density. |
| 4145284 |
Method for making polymeric filter aids and products thereof |
March 20, 1979 |
| Improved, low-cost filter aid materials are made from polyurethane and related polymers. A foam of the polymeric material is comminuted to eliminate substantially all closed cells. The resulting particles are graded to a desired average particle size. |
| 4142968 |
Diatomaceous earth filteraid and method for its manufacture |
March 6, 1979 |
| A method is provided for treating diatomaceous earth filteraids having a beer-soluble iron content of less than about 0.01% to further reduce the beer-soluble iron content by maintaining the filteraids in contact with a relatively small volume of an acid. In the filteraids so produced, t |
| 4110501 |
Splicing strip |
August 29, 1978 |
| A splicing strip is provided comprising a pair of mastic layers and a porous, flexible reinforcing sheet with the mastic layers in adherent contact through openings in the reinforcing sheet. A release sheet is attached to at least the outside face of one of the mastic layers, and a s |
| 4073673 |
Process for producing an expansion joint cover |
February 14, 1978 |
| A process for producing an expansion joint cover is provided for structures which comprises a substantially planar strip of flexible material with an insulating material affixed thereto, wherein the flexible planar strip has lateral portions extending beyond the insulating material with |
| 4071993 |
Construction material in sheet form and method of joining sheets edge-to-edge |
February 7, 1978 |
| A construction material in sheet form having at least two water barriers including a water-impermeable foamed intermediate layer, a mineral-based interior layer, and a prefinished, weatherable, water-impermeable non-asphaltic outer layer, with adjoining layers firmly adhered. Sheets of |
| 4067155 |
Sealing system |
January 10, 1978 |
| A system for joining and adhering a pair of abutting panels to a rigid substrate and providing a seal against thermal and moisture transfer. The system is comprised of an elongated receptacle member with a base and a pair of spaced vertical elements extending upwardly from the base and |
| 4063395 |
Twin membrane, self sealing, mechanically fastened insulated roof deck system |
December 20, 1977 |
| A roofing system comprising a fire resistant rigid class A fire rated board as a substrate having bonded thereto a sheet of foamed, insulating resin and having a tough weather resistant membrane bonded to the upper surface. A ledge of substrate about 1/2 inch wide protrudes beyond the fo |
| 4059933 |
Strip for fastening and sealing sheets of construction material |
November 29, 1977 |
| Apparatus for sealingly joining sheets of construction material laid with edges abutting over an underlying frame and having edges rabbeted to form a joint channel including a pad for lying in the channel, a cap permanently adhered to the pad member and having edges extending past the |
| 4059231 |
Method and apparatus for selectively comminuting particles of a frangible material |
November 22, 1977 |
| A method and apparatus for selectively comminuting particles of a frangible material for the production of filter aid, the apparatus including an air-conveying system for carrying entrained particles of varying masses, a venturi for accelerating the air stream and entrained particles, a |
| 4057908 |
Method and apparatus for drying damp powder |
November 15, 1977 |
| To dry fragile low density materials without damage, gas assisted injection and suspension of damp powder to a low velocity stream of heated gas followed by cyclone drying assures long residence time and produces a free-flowing product. |
| 4011183 |
Building board products and process for producing same |
March 8, 1977 |
| Shaped articles for construction and insulation which are water repellent are prepared by dry blending expanded perlite particles and fibers, applying to the resulting mixture a solution of a reactive synthetic organic binder in a low boiling organic solvent. The binder is capable of |
| 3978264 |
Coating for porous surfaces |
August 31, 1976 |
| When a porous substrate such as perlite insulation board is surfaced with a foamed polymer layer formed in place from liquid components, the liquid components will often partially penetrate the surface, resulting in loss of materials and uneven foaming. A barrier coating which can preven |
| 3958373 |
Twin membrane, self sealing, mechanically fastened insulated roof deck system |
May 25, 1976 |
| A roofing system comprising a fire resistant rigid class, a fire rated board as a substrate having bonded thereto a sheet of foamed, insulating resin and having a tough weather resistant membrane bonded to the upper surface. A ledge of substrate about 1/2 inch wide protrudes beyond the |
| 3952830 |
Mineral aggregate (perlite) acoustical board |
April 27, 1976 |
| Monolithic acoustical panels are provided including relatively coarse particles of expanded volcanic glass, such as perlite, and mineral fiber. The panel provides a highly porous structure that possesses desirable noise suppression characteristics, and comprises by weight 45 to 75% of an |
