MUMBAI, India, March 14 -- Intellectual Property India has published a patent application (202517133193 A) filed by Hosokawa Yoko Co. Ltd., Tokyo, on Dec. 29, 2025, for 'multilayer film for container, container including multilayer film, method for producing container, and drug solution-containing medical container.'
Inventor(s) include Yoshikawa, Katsuyuki; and Maruyama, Takuro.
The application for the patent was published on March 13, under issue no. 11/2026.
According to the abstract released by the Intellectual Property India: "To provide a multilayer film for containers, a container including the multilayer film, a method for producing a container including the multilayer film, and a drug solution-containing medical container in which a drug solution is housed in the container, in which the contents can be suppressed from being oxidized and altered by oxygen remaining in the container or the contents and/or penetrating and entering oxygen, adsorption of the contents to a film constituting the container can be suppressed, a decrease in the titer of a drug and adsorption of flavor can be suppressed, an increase in the adsorption amount of the contents to the film in a retort treatment step can be suppressed, uneven deformation of the film and occurrence of surface irregularities can be suppressed, and deformation of the container can be suppressed. A multilayer film for containers, including: an outer film which is a transparent oxygen barrier film; an intermediate film which is a coextruded film having an oxygen absorbing layer; and an inner film which is a coextruded film having a cyclic polyolefin layer containing cyclic polyolefin, in which the intermediate film has a symmetrical laminated structure having a skin layer with the oxygen absorbing layer as a core layer, and the inner film has a symmetrical laminated structure having a skin layer with the cyclic polyolefin layer as a core layer."
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