Exhibit 10.4 EMPLOYMENT AGREEMENT, dated as of October__ , 1998, by and between HI-TECH PHARMACAL CO., INC., a Delaware corporation with offices at 369 Bayview Avenue, Amityville, New York 11701 (the "Corporation"), and MARTIN KNOPF, an individual...Employment Agreement • August 2nd, 1999 • Hi Tech Pharmacal Co Inc • Pharmaceutical preparations • New York
