Roof tile and tile composition of matter
Patent 4514947 Issued on May 7, 1985. Estimated Expiration Date: 
May 18, 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.
May 18, 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 816252 881700 1124001 Roofing panel Patent #: 4279106 InventorAssigneeApplicationNo. 06/495829 filed on 05/18/1983US Classes:525/36, At least one of said polycarboxylic acid reactants or anhydrides contains ethylenic unsaturation52/533, Joint with fluid-handling feature52/560, Tapered52/602, Slab type with integral ribs524/5Derived from carboxylic acid or derivativeExaminersPrimary: Raduazo, Henry E.Attorney, Agent or FirmInternational ClassesE04D 1/12 (20060101)E04D 1/16 (20060101) AbstractA roof tile made of a composition of matter comprising cement, silica sand, iron oxide pigment, acrylic polymer resin, an antifoaming agent and water, and formed into a shape having a top surface, a bottom surface, a top end, a butt end, and with a longitudinal side edge having a longitudinal flange, and another longitudinal side edge having a longitudinal concavity, with a plurality of ribs formed in the bottom surface, and reinforcing wire embedded in said ribs and the bottom perimeter of the tile. | |
