FujiFilm Assigned Five Patents

Recording tape cartridge
FujiFilm Corporation, Tokyo, Japan, has been assigned a patent (10,026,444) developed by Kagawa, Yusuke, Kanagawa, Japan, for a “recording tape cartridge configured to suppress damage to guide wall portions that are orthogonal to a loading direction.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “A recording tape cartridge includes two first guide wall portions formed in a direction orthogonal to a loading direction of the case into a drive device and between which a first protruding wall portion formed at a brake member is insertable, and two second guide wall portions and two third guide wall portions formed at regular intervals from the first guide wall portions in a circumferential direction. A second protruding wall portion at the brake member is insertable between the second guide wall portions, and a third protruding wall portion at the brake member is insertable between the third guide wall portions. An interval, .alpha., between each first guide wall portion and the first protruding wall portion, and an interval, .beta., between each second guide wall portion and the second protruding wall portion and between each third guide wall portion and the third protruding wall portion satisfy ‘.alpha..gtoreq.2.times..beta.’.”

The patent application was filed on August 17, 2017 (15/679,155).

Magnetic tape
FujiFilm Corporation, Tokyo, Japan, has been assigned a patent (10,026,435) developed by Kasada, Norihito, Oyanagi, Masahito, Tada, Toshio, and Sugiyama, Takuro, Minami-ashigara, Japan, for a “magnetic tape having controlled surface properties of the backcoat layer and method of manufacturing the same.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “The magnetic tape has a magnetic layer containing ferromagnetic powder and binder on the surface on one side of a nonmagnetic support and has a backcoat layer containing nonmagnetic powder and binder on the surface on the other side of the nonmagnetic support, wherein the backcoat layer is less than or equal to 0.30 .mu.m in thickness, and the logarithmic decrement as determined by a pendulum viscoelasticity test on the surface on the backcoat layer side of the magnetic tape is less than or equal to 0.060.”

The patent application was filed on August 19, 2016 (15/241,631).

Magnetic tape
FujiFilm Corporation, Tokyo, Japan, has been assigned a patent (10,026,434) developed by Kasada, Norihito, Oyanagi, Masahito, Tada, Toshio, and Sugiyama, Takuro, Minami-ashigara, Japan, for a “magnetic tape having controlled surface properties of the magnetic layer and method of manufacturing the same.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “The magnetic tape has a magnetic layer containing ferromagnetic powder and binder on a nonmagnetic support, wherein the centerline average surface roughness Ra as measured on the surface on the magnetic layer side of the magnetic tape is less than or equal to 1.8 nm, and the logarithmic decrement as determined by a pendulum viscoelasticity test on the surface on the magnetic layer side of the magnetic tape is less than or equal to 0.050.”

The patent application was filed on August 19, 2016 (15/241,297).

Magnetic tape
FujiFilm Corporation, Tokyo, Japan, has been assigned a patent (10,026,433) developed by Kasada, Norihito, Oyanagi, Masahito, Tada, Toshio, and Sugiyama, Takuro, Minami-ashigara, Japan, for a “magnetic tape having controlled surface properties of the magnetic layer and method of manufacturing the same.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “The magnetic tape has a nonmagnetic layer containing nonmagnetic powder and binder on a nonmagnetic support, and has a magnetic layer containing ferromagnetic powder and binder on the nonmagnetic layer, wherein the combined thickness of the magnetic layer and the nonmagnetic layer is less than or equal to 0.80 .mu.m, and the logarithmic decrement as determined by a pendulum viscoelasticity test on the surface on the magnetic layer side of the magnetic tape is less than or equal to 0.050 and the coefficient of friction as measured on a base portion of the surface on the magnetic layer side is less than or equal to 0.35.”

The patent application was filed on August 19, 2016 (15/241,286).

Magnetic tape
FujiFilm Corporation, Tokyo, Japan, has been assigned a patent (10,026,430) developed by Kasada, Norihito, Oyanagi, Masahito, Tada, Toshio, and Kawatani, Yasuhiro, Minami-ashigara, Japan, for a “magnetic tape.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “The magnetic tape comprises, on a nonmagnetic support, a nonmagnetic layer comprising nonmagnetic powder and binder, and on the nonmagnetic layer, a magnetic layer comprising ferromagnetic powder, nonmagnetic powder, and binder, wherein a total thickness of the magnetic tape is less than or equal to 4.80 .mu.m, and a coefficient of friction as measured on a base portion of a surface of the magnetic layer is less than or equal to 0.35.”

The patent application was filed on September 28, 2015 (14/867,752).