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US 4,303,732 AGranted
Hollow microspheres
OwnerLeonard B. Torobininventor
Life of this patent
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OwnerLeonard B. Torobininventor
Estimating the term…
Hollow glass microspheres made from a low heat conductivity glass composition containing a high vacuum and a thin metal coating deposited on the inner wall surface of the microspheres are described. The hollow glass microspheres are used to make superior insulation materials in the construction of highly efficient solar energy collectors. The hollow glass microspheres can also be made to contain a thin transparent or reflective metal coating deposited on the inner wall surface of the microspheres by adding to the blowing gas small dispersed metal particles and/or gases of organo metal compounds and decomposing the organo metal compounds. The hollow glass microspheres can be made from low heat conductivity glass compositions. The microspheres can be used to make improved insulation materials and composites and insulating systems. The hollow glass microspheres can be used as filler materials in plastics, in plastic foam compositions and in concrete and asphalt compositions. The hollow glass microspheres can also be made in the form of filamented glass microspheres with a thin glass filament connecting adjacent glass microspheres.
Hollow inorganic film forming material microspheres of substantially uniform diameter of 200 to 10,000 microns and of substantially uniform wall thickness of 0.1 to 1,000 microns, wherein said microspheres are free of latent solid or liquid blowing gas materials or gases and the walls of said microspheres are substantially free of holes, relatively thinned wall portions or sections, sealing tips and bubbles.
Hollow inorganic film forming material microspheres of substantially uniform diameter of 500 to 6,000 microns and of substantially uniform wall thickness of 0.5 to 400 microns, wherein said microspheres are free of latent solid or liquid blowing gas materials or gases and the walls of said microspheres are substantially free of holes, relatively thinned wall portions or sections, sealing tips and bubbles.
Filamented, hollow inorganic film forming material microspheres of substantially uniform diameter of 200 to 10,000 microns and of substantially uniform wall thickness of 0.1 to 1000 microns, wherein said microspheres are connected to each other by filament portions which are continuous with the microspheres and are of the same inorganic film forming material from which the microspheres are made, and said microspheres are free of latent solid or liquid blowing gas materials or gases, and the walls of said microspheres are substantially free of holes, relatively thinned wall portions or sections and bubbles.
Filamented, hollow inorganic film forming material microspheres of substantially uniform diameter of 500 to 6000 microns and of substantially uniform wall thickness of 0.5 to 400 microns, wherein said microspheres are connected to each other by filament portions which are continuous with the microspheres and are of the same inorganic film forming material from which the microspheres are made, and said microspheres are free of latent solid or liquid blowing gas materials or gases, and the walls of said microspheres are substantially free of holes, relatively thinned wall portions or sections and bubbles.
Hollow glass microspheres of substantially uniform diameter of 200 to 10,000 microns and of substantially uniform wall thickness of 0.1 to 1,000 microns, wherein said microspheres are free of latent solid or liquid blowing gas materials or gases and the walls of said microspheres are substantially free of holes, relatively thinned wall portions or sections, sealing tips and bubbles.
Hollow glass microspheres of substantially uniform diameter of 500 to 6,000 microns and of substantially uniform wall thickness of 0.5 to 400 microns, wherein said microspheres are free of latent solid or liquid blowing gas materials or gases and the walls of said microspheres are substantially free of holes, relatively thinned wall portions or sections, sealing tips and bubbles.
Filamented, hollow glass microspheres of substantially uniform diameter of 200 to 10,000 microns and of substantially uniform wall thickness of 0.1 to 1000 microns, wherein said microspheres are connected to each other by filament portions which are continuous with the microspheres and are of the same inorganic film forming material from which the microspheres are made, and said microspheres are free of latent solid or liquid blowing gas materials or gases and the walls of said microspheres are substantially free of holes, relatively thinned wall portions or sections and bubbles.
Filamented, hollow glass microspheres of substantially uniform diameter of 500 to 6000 microns and of substantially uniform wall thickness of 0.5 to 400 microns, wherein said microspheres are connected to each other by filament portions which are continuous with the microspheres and are of the same inorganic film forming material from which the microspheres are made, and said microspheres are free of latent solid or liquid blowing gas materials or gases, and the walls of said microspheres are substantially free of holes, relatively thinned wall portions or sections and bubbles.
Filamented, hollow inorganic film forming material microspheres having a diameter of 200 to 10,000 microns and having a wall thickness of 0.1 to 1000 microns, wherein said microspheres are connected to each other by filament portions which are continuous with the microspheres and are the same inorganic film forming material from which the microspheres are made.
Filamented, hollow inorganic film forming material microspheres having a diameter of 500 to 6000 microns and having a wall thickness of 0.5 to 400 microns, wherein said microspheres are connected to each other by filament portions which are continuous with the microspheres and are of the same inorganic film forming material from which the microspheres are made.
Filamented, hollow glass microspheres having a diameter of 200 to 10,000 microns and having a wall thickness of 0.1 to 1,000 microns, wherein said microspheres are connected to each other by filament portions which are continuous with the microspheres and are of the same inorganic film forming material from which the microspheres are made.
Filamented, hollow glass microspheres having a uniform diameter of 500 to 6,000 microns and having a wall thickness of 0.5 to 400 microns, wherein said microspheres are connected to each other by filament portions which are continuous with the microspheres and are of the same inorganic film forming material from which the microspheres are made.
Dependencies are inferred from the claim text.