In 1990, these extended patterns for hyphenation of US English were published (TUGboat 11(1)). They have now been released them under a Debian/FSF free license. The patterns themselves are unchanged since 1990, though there may be updates in the future for other incorrect hyphenations that have come to light. The ushyphmax.tex file was previously known as ushyphen.max. The author is Gerard Kuiken.