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Controlled release powder and process for its preparation    
United States Patent4952402   
Link to this pagehttp://www.wikipatents.com/4952402.html
Inventor(s)Sparks; Randall T. (Gainesville, GA); Geoghegan; Edward J. (Athlone, IE)
AbstractA controlled release powder containing discrete micro-particles for use in edible, pharmaceutical and other controlled release compositions is disclosed. The micro-particles have an average size in the range of from 0.1 to 125 .mu.m. Each of the micro-particles is in the form of a micromatrix of an active ingredient uniformly distributed in at least one non-toxic polymer. The micro-particles have a predetermined release of active ingedient when the dissolution rate thereof is measured according to the Paddle Method of U.S. Pharmacopoeia XX at 37.degree. C. and 75 r.p.m.
   














 Title Information Submit all comments and votes
 
Patent Text Patent PDF Print Page Summary File History
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Inventor     Sparks; Randall T. (Gainesville, GA); Geoghegan; Edward J. (Athlone, IE)
Owner/Assignee     Elan Corporation, p.l.c. (Athlone, IE)
Patent assignment
All assignments
Publication Date     August 28, 1990
Application Number     07/169,447
PAIR File History     Application Data   Transaction History
Image File Wrapper   Patent Term   Fees
Litigation
Filing Date     March 17, 1988
US Classification     424/419 424/408 424/417 424/422 424/423 424/426 424/427 424/434 424/437 424/440 424/441 424/456 424/462 424/470 424/494 424/497 427/213.3 428/402.24
Int'l Classification     A61K 009/58 A61K 009/60 A61K 009/68 A61K 009/26 497
Examiner     Page; Thurman K.
Assistant Examiner    
Attorney/Law Firm     Falk; Robert Croskell; Henry Hardy,
Address
Parent Case     This application is a continuation of application Ser. No. 792,801, filed Oct. 30, 1985 abandoned.
Priority Data     Oct 30, 1984[IE]2788/84
USPTO Field of Search     424/484 424/485 424/486 424/487 424/488 424/408 424/417 424/426 424/427 424/422 424/423 424/434 424/437 424/440 424/441 424/456 424/462 424/470 424/494
Patent Tags     controlled release powder its preparation
   
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Market Size
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$5B - $10B
$2B - $5B
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Market Share
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