Inventor
YOSHIYAMA RYUICHI
JP5 patents
⚠️ This page may combine multiple inventors who share the name “YOSHIYAMA RYUICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MITSUBISHI CHEM CORP
4 patentsUS5981902ANov 9, 1999
Texturing apparatus for magnetic recording medium and magnetic recording medium process thereby
MITSUBISHI CHEM CORP51 citations91
US5928759AJul 27, 1999
Magnetic recording medium, method of producing the same, and recording and reading-out method
MITSUBISHI CHEM CORP41 citations89
US6078385AJun 20, 2000
Method of inspecting magnetic disc and apparatus therefor and process for producing the magnetic disc
MITSUBISHI CHEM CORP13 citations72
US6217970B1Apr 17, 2001
Magnetic recording medium, method of producing the same, and recording and reading-out method
MITSUBISHI CHEM CORP12 citations71