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Yasuhiro Okajima

USPTO Granted Patents = 4

Average Co-Inventor Count = 2.5

ph-index = 4

Forward Citations = 33(Granted Patents)

Location History:

Ichikawa, JA (1977)
Ichikawa, JP (1990)
Niihama, JP (1987 - 1994)

Company Filing History:

Sumitomo Metal Mining Company, Ltd.

Sumitomo Special Metals Co., Ltd.

where one patent can have more than one assignee

Years Active: 1977-1994

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4 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 5281250 - Powder material for rare earth-iron-boron based permanent magnets (1994-01-25),

2. 4915737 - Alloy target for manufacturing a magneto-optical recording medium (1990-04-10),

3. 4681623 - Process for producing alloy powder containing rare earth metals (1987-07-21),

4. 4029498 - Process for treating manganese nodules (1977-06-14),

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