TK

Tadao Katsuragawa

Ricoh Company: 10 patents #2,244 of 9,818Top 25%
Overall (All Time): #519,501 of 4,157,543Top 15%
10
Patents All Time

Issued Patents All Time

Showing 1–10 of 10 patents

Patent #TitleCo-InventorsDate
8068387 Magneto-optical device 2011-11-29
RE42824 Magneto-optical recording medium having a plurality of ferromagnetic thin layers 2011-10-11
6993872 Light control window 2006-02-07
6243193 Magneto-optical light modulator 2001-06-05
6187431 Magnetic recording medium 2001-02-13
6055215 Magneto-optical recording medium having a plurality of ferromagnectic thin layers 2000-04-25
5991075 Light polarizer and method of producing the light polarizer Ikue Kawashima, Yasuhiro Satoh 1999-11-23
5112466 Apparatus for forming a thin film Wasaburo Ohta, Mikio Kinoshita 1992-05-12
5112701 Magneto-optic recording media and process for producing the same 1992-05-12
4960072 Apparatus for forming a thin film Wasaburo Ohta, Mikio Kinoshita 1990-10-02