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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 |
| 4076546 | Method for production of expansive cement A method for the production of an expanding cement which includes the steps n which so-called "Portland cement" is dry-mixed with an expanding additive which comprises 6 to 30% of the total weight of the cement. The expanding additive contains 2 to 8% dial... | 02/28/1978 |
| 4043825 | Production of foamed gypsum moldings In the production of a gypsum-based porous body of high strength by foaming a gypsum-water mixture containing alkali, hydrogen peroxide and a decomposition catalyst therefor, the improvement which comprises including in said mixture an acid-reacting compo... | 08/23/1977 |
| 4040850 | Production of porous gypsum moldings In the production of a gypsum-based porous body of high strength by foaming a gypsum-water mixture, the improvement which comprises including in said mixture about 0.1 to 1 part of a water-soluble aluminum compound per 100 parts by weight of gypsum, calci... | 08/09/1977 |
| 4018963 | Large lightweight gypsum article and a process for the production thereof A large lightweight gypsum article comprising anhydrous or hemihydrous gypsum, ettringite, reinforcing members, and, if necessary, fibers and/or light-weight aggregate.... | 04/19/1977 |
| 3974024 | Process for producing board of cement-like material reinforced by glass fiber This invention relates to a process for continuously producing a dense board of cement-like material reinforced by glass fiber, which comprises (1) preparing a slurry of cement-like material; (2) simultaneously spraying the cement-like slurry and short le... | 08/10/1976 |
| 3950181 | Granulating method and apparatus Porous gypsum granules are produced by adding powdered plaster to a stable aqueous foam and agitating the foam until granules of desired size are formed. Agitation is terminated before the foam collapses, but when the foam has subsequently collapsed the d... | 04/13/1976 |
| 3949029 | Production of porous shaped inorganic structures using gas-laden molecular sieve zeolites In the production of a porous shaped inorganic structure wherein an inorganic solids-containing suspension is mixed with a gas-generating compound and the suspension is poured into a mold, the improvement which comprises employing as said gas-generating c... | 04/06/1976 |
