1/4/2011
7,862,318
Container having a rim or other feature encapsulated by or formed from injection-molded material
Middleton et al of Graphic Packaging, Georgia developed a  tray  or container which may be hermetically sealed having a flange, rim, handle, rib, bottom surface, sidewall, or other portion that is encapsulated by or formed from injection-molded material.  (RDC 7/13/2011)

8/3/2010
7,766,643
Moulding threaded articles
Zuffa has developed a mold for molding threaded caps as well as necks for containers using removeable mold sections by grips using arched trajectories limiting mechanical motion and increasing cycle efficiency. (RDC 10/1/2010)

5/5/2009
7,527,758
Methods and apparatus for manufacturing a diffusion-tight plastic container
Kiel of Mars has developed and insert molding process for injection molding a diffusion tight label where the label film becomes an interal part of the container wall.

4/21/2009
7,520,404
Paper food container with injection molded top rim structure and method of manufacturing same 
Mazzarolo has developed a paper cup with sealable edge formed by injection molding a rim structure to the cup.  (RDC 10/1/2010)