Growing community of inventors

Tokawa-machi, Japan

Mayumi Takayama

Average Co-Inventor Count = 2.00

ph-index = 2

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 5

Mayumi Takayama ↔ Shiro Tsuda (2 patents)Mayumi TakayamaMayumi Takayama (2 patents)Shiro TsudaShiro Tsuda (13 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Ferrotec Corporation (2 from 24 patents)


2 patents:

1. 5879580 - Ferrofluid having improved oxidation resistance

2. 5656196 - Ferrofluid having improved oxidation resistance

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as of
12/13/2025
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