1
Toshihiro Ueda, Masamichi Imanishi, Kazuo Iyama, Akio Fukuhara, Ken Iwase: Container for accommodating two kinds of liquids. Suntory, Burns Doane Swecker & Mathis, January 6, 1987: US04634003 (44 worldwide citation)

A container for separately accommodating a pair of liquids, such as mineral water and whisky, including a main body for accommodating a first liquid, a small cup for accommodating a second liquid, provided with a flange extending from the entire periphery of an upper end of the small cup and a skirt ...


2
Akio Fukuhara, Kazuo Iyama, Kazuo Suzuki, Ken Iwase: Method for forming a two chambered can. Daiwa Can Company, February 18, 1992: US05088870 (13 worldwide citation)

A method for forming a two chambered can having a first chamber in a seamless hollow can cylinder with a closed end portion formed by deep drawing a thin aluminium sheet a second chamber defined in a recess which is formed by inversely rolling a part of the can cylinder at the location adjacent to t ...