Paper Mate Pen advert from 1977
Paper Mate is a registered division of Sanford L.P., a Newell Rubbermaid company that produces writing products. Among their offerings is the PhD multi pen/pencil/stylus, with an ergonomic grip, for the reduced writing fatigue produced by its grip to the hand. The most popular pens are Profile and Write Bros. The most popular mechanical lead pencil is the ClearPoint. In 2010, Paper Mate introduced environmentally-friendly biodegradable pens and pencils as additions to its wide-ranging product portfolio. They also manufacture Pink Pearl erasers.
Info gleaned from Wikipedia.