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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 |
| 5152807 | Fuel oil compositions containing guanidinium salts Sediment and color formation in diesel and heating fuel oils, especially those comprising a cracked fraction, may be reduced by incorporating in the fuel oil a guanidinium or substituted guanidinium salt.... | 10/06/1992 |
| 4149980 | Ashless lubricant additives Ashless lubricant additive compositions which contain a small but effective amount of overbased aminoguanidine sulfonate, sufficient to impart acid neutralization, antitrust, anticorrosive, dispersant, and detergent properties, are formed by reacting grea... | 04/17/1979 |
| 3968151 | Ashless dispersant products and process Improved additives for lubricants and motor fuels are provided by reacting a petroleum sulfonic acid with an adduct formed from an amine and an aldehyde. Lubricating oil compositions and motor fuels containing said additives are also provided.... | 07/06/1976 |
| 3965084 | Ashless dispersant products and process Improved additives for lubricants and motor fuels are provided by reacting a petroleum sulfonic acid with an adduct formed from an amine and either urea or thiourea. Lubricating oil compositions and motor fuels containing said additives are also provided.... | 06/22/1976 |
| 3960937 | Ashless additives for lubricating compositions Superior ashless additives for lubricants are prepared by a process comprising first introducing a petroleum sulfonic acid and a polyamine to a reaction zone and subsequently introducing a cyclic anhydride of a dicarboxylic acid into the reaction zone. In... | 06/01/1976 |
