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Patent applications and USPTO patent grants for Tominaga; Katsuhiko.The latest application filed is for "heat resistant alloy for exhaust valves durable at 900.degree.c and exhaust valves made of the alloy".
Patent | Date |
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Heat resistant alloy for use as material of engine valve Grant 7,481,970 - Toji , et al. January 27, 2 | 2009-01-27 |
Heat resistant alloy for exhaust valves durable at 900.degree.C and exhaust valves made of the alloy App 20060157171 - Ueta; Shigeki ;   et al. | 2006-07-20 |
Heat resistant alloy for use as material of engine valve App 20050265887 - Toji, Akihiro ;   et al. | 2005-12-01 |
High-strength, heat-resistant alloy for exhaust valves with improved overaging-resistance App 20040184946 - Tominaga, Katsuhiko ;   et al. | 2004-09-23 |
Valve seat made of secondary hardening-type high temperature wear-resistant sintered alloy Grant 5,466,276 - Sato , et al. November 14, 1 | 1995-11-14 |
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