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| Number | Title | Issue Date |
| 7517837 | Biodegradable lubricants Lubricant compositions based on a biodegradable base oil, such as a polyol ester or polyalkylene glycol, a calcium sulfonate based thickener and a naturally occurring phospholipid as an anti-wear additive, such as lecithin for environmentally sensitive applications ... | 04/14/2009 |
| 7413682 | Antioxidants and methods of making antioxidants Antioxidants for industrial, automotive, and aviation lubricants and methods of making the same are provided. A process using alkylated diphenylamines; alkylated phenyl-α-naphthyl amines; and a metal catalyst to form oxidates is provided. The metal catalyst is a co... | 08/19/2008 |
| 7307049 | Antioxidants for synthetic lubricants and methods and manufacture Provided are compounds of formula wherein R1 is linear or branched alkyl; AR is phenyl, naphthyl, or phenanthryl; and m is 0, 1, or 2; and R2 is an alkyl substituted carboxyl. ... | 12/11/2007 |
