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Actor Marlon Brando has four patents, all named "Drumhead tensioning device and method."
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| Number | Title | Issue Date |
| 7044688 | Roof bolts for use in mines, a method for their production and method for their installation A roof bolt comprises a shaft for insertion in a hole drilled in a mine roof and a head whereby the bolt may be rotated, the head being offset with respect to the longitudinal axis of the shaft so that when the bolt is rotated by means of its head the shaft is cause... | 05/16/2006 |
| 7033430 | Cement-containing compositions and method of use A settable fluid cementitious composition which is fluid for sufficient time to be suitable for use in a flexible container to provide support in a mine said composition comprises (i) Portland cement in an amount from at least about 8% preferably 10%, (ii) a water s... | 04/25/2006 |
| 6991547 | Roof bolts for use in mines, a method for their production and method for their installation A roof bolt comprises a shaft for insertion in a hole drilled in a mine roof and a head whereby the bolt may be rotated, the head being offset with respect to the longitudinal axis of the shaft so that when the bolt is rotated by means of its head the shaft is cause... | 01/31/2006 |
| 6966610 | Treatment of rock surfaces A method for providing a protective coating in a mine comprising spraying onto the rock surfaces of the mine a hot melt adhesive in an amount to form a coating at least 1 mm, preferably at least 2 mm in thickness and allowing the coating to solidify. The hot melt ad... | 11/22/2005 |
