Modifying glass bead surfaces
Patent 4542066 Issued on September 17, 1985. Estimated Expiration Date: 
September 12, 2003. 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.
September 12, 2003. 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 3061495 3291633 3837892 Carrier bead coating compositions Strengthening of glass Silane coated silicate minerals and method for preparing same Patent #: 4233366 InventorAssigneeApplicationNo. 06/531453 filed on 09/12/1983US Classes:428/406, Glass particles or spheres427/220, Organic coating65/30.1, With chemically reactive treatment of glass preform65/60.8, Silicon containing coating65/61With wearing away of surface material (e.g., abrading or grinding)ExaminersPrimary: Lusignan, Michael R.Attorney, Agent or FirmInternational ClassesC03C 17/30 (20060101)C03C 11/00 (20060101) C03C 17/28 (20060101) C03C 23/00 (20060101) Foreign Application Priority Data1982-09-14 GBAbstractA method of modifying the surface of hollow glass beads including the step of treating the beads with a solution containing at least one of an organic acid selected from beta-hydroxy acids, oxalic acid and ethylene diamine tetraacetic acid, and a salt of said organic acid. | |
