Claims for Patent: 5,618,845

Summary for Patent: 5,618,845

Title:	Acetamide derivative having defined particle size
Abstract:	Pharmaceutical compositions comprising modafinil in the form of particles of defined size. The particle size of modafinil can have a significant effect on the potency and safety profile of the drug.
Inventor(s):	Grebow; Peter E. (Penllyn, PA), Corvari; Vincent (Hockessin, DE), Stong; David (Coatsville, PA)
Assignee:	Cephalon, Inc. (West Chester, PA)
Application Number:	08/319,124
Patent Claims:	1. A pharmaceutical composition comprising a substantially homogeneous mixture of modafinil particles, wherein at least about 95% of the cumulative total of modafinil particles in said composition have a diameter of less than about 200 microns (.mu.m). 2. The composition of claim 1 wherein said particles have a median diameter range of between about 2.mu.m and about 60 .mu.m. 3. The composition of claim 1, wherein said composition comprises between about 50 milligrams and about 700 milligrams of said modafinil. 4. A method of altering the somnolent state of a mammal, said method comprising administering an effective amount of the composition of claim 1 to said mammal. 5. The method of claim 4, wherein said somnolent state is narcolepsy. 6. The method of claim 4, wherein said effective amount comprises between about 50 milligrams/day and about 700 milligrams/day of said composition.