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...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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US Patent 4146510 - Flake- or sliver-like porous structure of polymeric material and process of producing same, and process of producing sheet-like structure therefrom
US Patent Issued on March 27, 1979
Estimated Patent Expiration Date:
March 27, 1996Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
Estimated Patent Expiration Date:
March 27, 1996Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.AbstractFlake- or sliver-like porous structures of a polymeric material heavily loaded with a finely divided inorganic substance are prepared by spurting a mixture of the polymeric and finely divided inorganic components in a solvent. The products have many fine, irregular voids. The thickness of walls forming such voids is 5μ or less. The products are especially useful for producing sheet-like structures therefrom by beating and/or refining them followed by general paper making procedures. The sheets, when calendered, have a high initial modulus and improved dimensional stability. | Inventors
AssigneeApplicationNo. 05/609442 filed on 09/02/1975US Classes:521/64, Removing a liquid to form a cellular product264/45.3, Incorporating particulate material, fibers, or batts in a random distribution within a foamed body264/53, Liquid to gas phase change521/143, From acyclic mono-unsaturated hydrocarbon as only reactant521/55, Treating a cellular solid polymer by adding a material thereto which forms a composition therewith521/80Including solid polymer formation in or during extruding stepField of Search264/45.3, Incorporating particulate material, fibers, or batts in a random distribution within a foamed body264/53Liquid to gas phase changeExaminersPrimary: Anderson, PhilipAttorney, Agent or FirmUS Patent References2810646, 3003304, 3210239, 3785919, 3884030, 3911070, 3912665, 3912666, 3931762, Method for preparing a plastic relief printing plateIssued on: 01/13/1976 Inventor: Fukushima , et al.4049593Inorganic substance composition and process for producing same Issued on: 09/20/1977 Inventor: Sato , et al. International ClassesC08J 9/00 (20060101)D01D 5/11 (20060101) D01D 5/00 (20060101) Foreign Application Priority Data1971-11-12 JP |
