Pioneer Hi-Bred will no longer be referred to as Pioneer Hi-Bred, a DuPont business. As of July 1, the Pioneer Hi-Bred name will become a historical footnote as the company is renamed DuPont Pioneer.
There seems to have been confusion about the word Hi-Bred or Hybrid from day one. The company became known as Pioneer Hi-Bred shortly after it was created; the owners changed the name adding Pioneer to avoid confusion with other companies dealing with hybrid corn. There have been other minor changes over the years, such as to Pioneer Hi-Bred International, Inc., when the company moved to overseas sales. And the most recent manifestation was Pioneer Hi-Bred, a DuPont business, after the DuPont purchase. Now it's DuPont Pioneer.