Abstract: A cathode active material for a lithium secondary battery includes a lithium metal oxide particle and a thio-based compound formed on at least portion of a surface of the lithium metal oxide particle. The thio-based compound has a double bond that contains a sulfur atom. Chemical stability of the lithium metal oxide particle may be improved and surface residues may be reduced by the thio-based compound.

Abstract: A paper cup that contains a beverage and is held by a user with a hand, the paper cup includes: a cup main body formed as a cylinder with an open upper portion, and containing the beverage from the open upper portion; and a heat insulating material disposed on an outer wall of the cup main body so as to reduce a thermal conductivity between the beverage contained in the paper cup and the hand of the user holding the paper cup, and the heat insulating material is partially disposed on an outer wall of the cup main body along with a circumferential direction of the cup main body, and attached to the cup main body so as not to separate from the cup main body. Thus, since the heat insulating material is attached on the outer wall of the cup main body, the heat insulating material is not separable from the cup main body, and the user may conveniently hold the paper cup containing a hot or cold beverage.

Abstract: A paper cup that contains a beverage and is held by a user with a hand, the paper cup includes: a cup main body formed as a cylinder with an open upper portion, and containing the beverage from the open upper portion; and a heat insulating material disposed on an outer wall of the cup main body so as to reduce a thermal conductivity between the beverage contained in the paper cup and the hand of the user holding the paper cup, and the heat insulating material is partially disposed on an outer wall of the cup main body along with a circumferential direction of the cup main body, and attached to the cup main body so as not to separate from the cup main body. Thus, since the heat insulating material is attached on the outer wall of the cup main body, the heat insulating material is not separable from the cup main body, and the user may conveniently hold the paper cup containing a hot or cold beverage.

Abstract: A paper cup with a hand grip has a cylindrical cup body with an open upper end to accommodate beverages and a hand grip attached to an outer wall of the cup body and a pair of ring-shaped portions. The ring-shaped portions are symmetrically disposed on right and left ends of the contact portion and each include a through hole through which a user puts a finger when grasping the hand grip. The ring-shaped portions are movable between a first position where they are attached to the outer wall of the cup body and a second position where the ring-shaped portions face each other. In this way the paper cup can be stably and conveniently grasped to prevent a beverage in the paper cup from being shaken and overflowing, even when a hot or cold beverage is filled in the paper cup.

Abstract: A paper cup that contains a beverage and is held by a user with a hand, the paper cup includes: a cup main body formed as a cylinder with an open upper portion, and containing the beverage from the open upper portion; and a heat insulating material disposed on an outer wall of the cup main body so as to reduce a thermal conductivity between the beverage contained in the paper cup and the hand of the user holding the paper cup, and the heat insulating material is disposed on a part of an outer wall of the cup main body, and attached to the cup main body so as not to separate from the cup main body. Thus, since the heat insulating material is attached on the outer wall of the cup main body, the heat insulating material is not separable from the cup main body, and the user may conveniently hold the paper cup containing a hot or cold beverage.

Abstract: A paper cup with a hand grip has a cylindrical cup body with an open upper end to accommodate beverages and a hand grip attached to an outer wall of the cup body and a pair of ring-shaped portions. The ring-shaped portions are symmetrically disposed on right and left ends of the contact portion and each include a through hole through which a user puts a finger when grasping the hand grip. The ring-shaped portions are movable between a first position where they are attached to the outer wall of the cup body and a second position where the ring-shaped portions face each other. In this way the paper cup can be stably and conveniently grasped to prevent a beverage in the paper cup from being shaken and overflowing, even when a hot or cold beverage is filled in the paper cup.