O-I Glass has been granted a patent for a threadless pressure retention closure for containers. The closure includes a pressure closure assembly with a relief valve and inner shell, and an outer release shell with overlapping base walls and skirts. This innovative design enhances container sealing efficiency. GlobalData’s report on O-I Glass gives a 360-degree view of the company including its patenting strategy. Buy the report here.

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According to GlobalData’s company profile on O-I Glass, Extrusion-based additive manufacturing was a key innovation area identified from patents. O-I Glass's grant share as of January 2024 was 73%. Grant share is based on the ratio of number of grants to total number of patents.

Threadless pressure retention closure for a container

Source: United States Patent and Trademark Office (USPTO). Credit: O-I Glass Inc

A newly granted patent (Publication Number: US11878847B2) discloses a threadless pressure retention closure for containers, featuring a pressure closure assembly with a pressure relief valve and an inner shell designed to retain the valve. The closure also includes an outer release shell with two portions - one overlapping the inner shell base wall and the other having an outer skirt larger in diameter. This innovative design allows for easy assembly and disassembly of the closure, facilitating the release of pressure from the container when needed. The closure is specifically designed to be coupled to a container neck finish, ensuring a secure fit that prevents leaks and maintains pressure within the package.

Furthermore, the patent describes a pressurized package incorporating this unique closure system, where the release shell is circumferentially oriented with respect to the inner shell to enable efficient pressure relief. The release shell is rotatable relative to the inner shell, allowing the pressure relief tab to displace the relief valve and release gas to the atmosphere. Additionally, the outer skirt of the second portion of the release shell includes a lift ledge for easy removal of the closure from the container. This innovative threadless pressure retention closure system offers a practical solution for maintaining pressure in containers while ensuring ease of use and efficient pressure relief mechanisms.

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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.

GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.