Masao Yamaoka

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Patents Grantslast 30 patents

Information Patent Grant
Melting and holding furnace
- Patent number 5,026,030
- Issue date Jun 25, 1991
- Kabushiki Kaisha Daiki Aluminum Kogyosho
- Masayuki Inukai
- C21 - METALLURGY OF IRON
Information Patent Grant
Automatic melt supplying method and holding furnace having automati...
- Patent number 4,881,670
- Issue date Nov 21, 1989
- Kabushiki Kaisha Daiki Aluminium Kogyosho
- Masao Yamaoka
- C21 - METALLURGY OF IRON
Information Patent Grant
Melting and holding furnace
- Patent number 4,850,577
- Issue date Jul 25, 1989
- Kabushiki Kaisha Daiki Aluminum Kogyosho
- Masao Yamaoka
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...