Compositions and methods for cleaning hard surfaces
Patent 4971631 Issued on November 20, 1990. Estimated Expiration Date: 
March 7, 2008. Estimated 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.
March 7, 2008. Estimated 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.Patent ReferencesInventorsAssigneeApplicationNo. 164920 filed on 03/07/1988US Classes:510/100, WITH SAFETY OR INDICATOR FEATURE134/3, Including acidic agent134/41, Metal base work, acid treating252/190, With absorbents510/199, For removing fungal or algal growth from a substrate (e.g., removing mold, mildew, algae, etc.)510/238, For grouted tile, bathtub, or procelain or ceramic surface (e.g., ceramic bathroom tile, etc.)510/240, For stonework, brickwork, or cementitious material (e.g., marble, granite, concrete, alabaster, etc.)510/257, With inorganic fluorine containing component (e.g., HF, etc.)510/269, Inorganic acid component (e.g., sodium bisulfate, etc.)510/363, For removing stains caused by iron, aluminum, or protein containing material (e.g., rust, aluminum marks, blood, food, etc.)510/405Liquid compositionExaminersPrimary: Pal, AsokAssistant: Ojan, Ourmazd S. Attorney, Agent or FirmForeign Patent References
International ClassesC23G 001/02B08B 003/08 C11D 007/08 AbstractThis disclosure relates to a process for the removal of mineral deposits, water stains, rust, algae and other marine residue from hard surfaces, both porous and nonporous, such as ceramics, acrylics, fiberglass, plastics, marble, stainless steel, glass, aluminum, steel and other ferrous and non ferrous metals. Cleaning is effected by applying to said surfaces a viscous or gelled fluid composition containing a mineral-dissolving acid, a lubricant such as glycerin or mineral oil, and a thickening agent such as gelatin or silicon dioxide or mixtures thereof. Optional ingredients may also be present. | |
