Akira Ushimaru

Magnetic recording medium containing a polyurethane resin having a modified amine acid incorporated into the resin

Magnetic recording medium comprising a lower magnetic layer containing an amine modified vinyl chloride copolymer and an upper magnetic layer containing a vinyl chloride copolymer with a polar group

Magnetic recording medium comprising ferromagnetic particles having crystallite size of less than 450 angstroms and a specified polyurethane binder

Magnetic recording medium having specific subbing layers and process for recovery and processing thereof

Magnetic recording medium and process for recovery and processing thereof

Magnetic recording medium having multiple magnetic layers with specified compositions

Magnetic recording medium comprising a vinyl chloride based resin group containing an epoxy group or a polar or both and further a polyurethane resin containing three hydroxyl groups and one polar group

Magnetic recording medium comprising plural magnetic layers

Magnetisches Aufzeichnungsmedium und Verfahren zu seiner Rückgewinnung und seiner Verarbeitung

Magnetisches Aufzeichnungsmedium und Verfahren zu seiner Rückgewinnung und seiner Verarbeitung A magnetic recording medium and methods for its recovery and its processing