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| Number | Title | Issue Date |
| 6807836 | Method of applying a surface finish on a metal substrate and method of preparing work rolls for applying the surface finish The method of preparing cold mill work rolls for forming a surface finish on a metal substrate includes the steps of placing a work roll on a grinder, truing the work roll, roughening the work roll, and performing at least one finishing pass on the work roll. The me... | 10/26/2004 |
| 5948985 | Method and apparatus for ultrasonic testing of aluminum billet An ultrasonic inspection apparatus and method tests elongated, cylindrical aluminum billets. The apparatus includes a frame supporting a movable carriage having at least one ultrasonic detector assembly mounted thereon. Each ultrasonic detector assembly i... | 09/07/1999 |
| 5853573 | Groundwater total cyanide treatment apparatus A method and apparatus for the removal of total cyanide from aqueous solution. The method includes the steps of placing the aqueous solution into a reaction tank, adding lime, ferrous sulfate, and acid to the solution in the reaction tank and agitating th... | 12/29/1998 |
| 5711785 | Method and apparatus for controlling the cleaning cycle of air filter elements and for predicting the useful life thereof A method and apparatus are disclosed for cleaning filter elements, such as filter bags in a plurality of baghouses and for predicting the useful life of such filter elements in individual baghouses. The volumetric flow rate of air from each baghouse is co... | 01/27/1998 |
| 5647996 | Groundwater total cyanide treatment method A method and apparatus for the removal of total cyanide from aqueous solution. The method includes the steps of placing the aqueous solution into a reaction tank, adding lime, ferrous sulfate, and acid to the solution in the reaction tank and agitating th... | 07/15/1997 |
| 5607598 | Treatment and disposal of red mud generated in the Bayer Process Red mud bauxite residue produced in the Bayer Process is treated in a plurality of centrifuges and repulp tanks to successively wash and dewater the red mud. A final centrate liquor is obtained in a first upstream centrifuge stage which is rich in alumina... | 03/04/1997 |
