Water treatment/cleaning composition comprising polyaspartic acid or derivatives thereof and phosphonic acid
October 7, 2014. 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 References 3288846 3846380 3886204 Inhibition of inorganic or biological CaCO3 deposition by poly amino acid derivatives Membrane cleaning compositions containing phosphorous compounds Polyaspartic acid from maleic acid and ammonia Phosphate-free alkaline detergent for cleaning-in-place of food processing equipment Process for the manufacture of anhydro polyamino acids and polyamino acids Polyaspartic acid as a calcium sulfate and a barium sulfate inhibitor Polyaspartic acid as a calcium carbonate and a calcium phosphate inhibitor InventorsAssigneeApplicationNo. 319994 filed on 10/07/1994US Classes:510/219, For glass or synthetic resin equipment or container (e.g., bottle, jar, pipeline, etc., made of polycarbonate, etc.)252/180, Plant or organic material containing510/222, Wax or phosphorus or silicon containing organic component510/228, Phosphorus, silicon, or sulfoxy containing organic component (e.g., sulfate, sulfonate, etc.)510/434, Polycarboxylic acid component, or acid anhydride or salt thereof (e.g., acrylic acid polymer, maleic anhydride, sodium citrate, etc.)510/469, Carbon bonded directly to the phosphorus (e.g., phosphonic acid or salt or ester thereof, etc.)510/476Carboxylic acid anhydride, free carboxyl group, or salt thereof in the polymerExaminersPrimary: Lieberman, PaulAssistant: Hertzog, Ardith Attorney, Agent or FirmForeign Patent References
International ClassesC11D 003/37C11D 003/28 C11D 003/33 C11D 003/36 DIG. 10 Foreign Application Priority Data1994-03-14 DEAbstractAn improved composition for water treatment and for alkaline cleaning contains polyaspartic acid or a derivative thereof and a phosphonic acid.Other References
Field of SearchPlant or organic material containing | |
