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Masao Maruyama

USPTO Granted Patents = 4

Average Co-Inventor Count = 3.4

ph-index = 4

Forward Citations = 36(Granted Patents)

Location History:

Hyogo, JP (1988)
Itami, JP (1983 - 1995)

Company Filing History:

4 out of 10,240

Sumitomo Electric Industries, Limited

Years Active: 1983-1995

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4 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 5421852 - Hard alloy and its manufacturing method (1995-06-06),

2. 4868065 - Alloy tool of hard metal (1989-09-19),

3. 4753678 - Sintered hard metal having superior toughness (1988-06-28),

4. 4401297 - Sintering furnace for powder metallurgy (1983-08-30),

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