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Richard C Darr: Blow molded container having paneled side wall. Plastipak Packaging, Brooks & Kushman P C, November 25, 1997: US05690244 (128 worldwide citation)

A plastic blow molded container (10) of polyethylene terephthalate has a side wall (18) at least three vertically spaced horizontal ribs (38) of an annular shape and at least (12) vertical ribs (40) spaced circumferentially and extending between the horizontal ribs to cooperate therewith to define g ...


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James R Steinke: Plastic blow molded water bottle. Plastipak Packaging, Brooks & Kushman P C, May 23, 2000: US06065624 (114 worldwide citation)

A plastic blow molded water bottle (10) of a round shape has a body portion (12), an upper dispensing end (18), and a lower base (32) constructed in a manner that provides improved ability to withstand internal pressure.


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William A Slat: Reinforced central base structure for a plastic container. Plastipak Packaging, Bachman & LaPointe P C, July 28, 1998: US05785197 (113 worldwide citation)

A plastic container of the present invention comprises a neck portion defining an opening, a shoulder portion continuous with the neck portion, and an intermediate sidewall portion continuous with the shoulder portion. The intermediate sidewall portion defines a major portion of a volume for holding ...


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William A Slat, Richard C Darr: Multi-layer containers. Plastipak Packaging, John P Guenther, Robert H Bachman, October 14, 1997: US05676267 (87 worldwide citation)

A multi-layer preform for forming multi-layer containers includes an extruded inner barrier layer containing polyethylene naphthalate, said inner layer having an upper portion adapted to be formed into an upper portion of a container, an intermediate portion adapted to be formed into an intermediate ...


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William C Young: Plastic blow molded container having lower annular grip. Plastipak Packaging, Brooks & Kushman P C, March 31, 1998: US05732838 (71 worldwide citation)

A plastic blow molded container (10) having an upper dispensing end (16), a lower base (18) and a body portion (20) extending therebetween is constructed with the body portion having a round upper drum section (36) and an inwardly extending lower annular grip section (38) having depressions (42) spa ...


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William A Slat, Richard C Darr: Hot fillable container with flexible base portion. Plastipak Packaging, Honigman Miller Schwartz and Cohn, January 10, 2006: US06983858 (62 worldwide citation)

A plastic container comprised of a closed base, a body portion, and a neck portion with a dispensing opening. The closed base includes a substantially rigid support portion and a flexible portion. The body portion preferably includes a shoulder portion and a substantially rigid wall portion that inc ...


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James C Dorn, Richard A Lovelace Jr, John P Reynolds, Richard C Darr: Plastic container with stacking recesses. Plastipak Packaging, Robert H Bachman, July 8, 2003: US06588612 (57 worldwide citation)

Stackable plastic container including side portions having at least one of protrusions and depressions which nest with one of matching protrusions and depressions of a second container, and with the bottom portion including depressions which nest with the pouring spout and handle of a second contain ...


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William A Slat, Richard C Darr: Multi-layer containers. Plastipak Packaging, Bachman & LaPointe, November 7, 1995: US05464106 (52 worldwide citation)

A multi-layer preform for forming multi-layer containers includes an extruded upper portion having a first thickness which is adapted to form an upper portion of a container. The preform also includes an extruded intermediate portion having a second thickness thicker than the first thickness. The in ...