Growing community of inventors

Sakura, Japan

Hanako Oyamada

Average Co-Inventor Count = 11.00

ph-index = 4

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 = 103

Hanako OyamadaPaul Richard Phillips (5 patents)Hanako OyamadaAndrew Francis Chiffey (5 patents)Hanako OyamadaRaj Rao Rajaram (5 patents)Hanako OyamadaAndrew Peter Walker (5 patents)Hanako OyamadaPhilip Gerald Blakeman (5 patents)Hanako OyamadaJane Gast (5 patents)Hanako OyamadaSougato Chatterjee (5 patents)Hanako OyamadaSatoshi Sumiya (5 patents)Hanako OyamadaLifeng Wang (5 patents)Hanako OyamadaGavin Michael Brown (4 patents)Hanako OyamadaMichael Gavin Brown (1 patent)Hanako OyamadaHanako Oyamada (5 patents)Paul Richard PhillipsPaul Richard Phillips (103 patents)Andrew Francis ChiffeyAndrew Francis Chiffey (65 patents)Raj Rao RajaramRaj Rao Rajaram (59 patents)Andrew Peter WalkerAndrew Peter Walker (29 patents)Philip Gerald BlakemanPhilip Gerald Blakeman (25 patents)Jane GastJane Gast (14 patents)Sougato ChatterjeeSougato Chatterjee (13 patents)Satoshi SumiyaSatoshi Sumiya (9 patents)Lifeng WangLifeng Wang (8 patents)Gavin Michael BrownGavin Michael Brown (20 patents)Michael Gavin BrownMichael Gavin Brown (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Johnson Matthey Public Limited Company (5 from 838 patents)

2. Johnson Matthey Japan Godo Kaisha (2 from 4 patents)


5 patents:

1. 10773251 - Oxidation catalyst for internal combustion engine exhaust gas treatment

2. 10376867 - Oxidation catalyst for internal combustion engine exhaust gas treatment

3. 9868115 - Oxidation catalyst for internal combustion engine exhaust gas treatment

4. 9005559 - Oxidation catalyst for internal combustion engine exhaust gas treatment

5. 8652429 - Oxidation catalyst for internal combustion engine exhaust gas treatment

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as of
1/22/2026
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