The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 21, 1999
Filed:
Jun. 16, 1997
Applicant:
Inventors:
Andrew Derek Sutton, Grantham, GB;
Richard Alan Johnson, Nottingham, GB;
Assignee:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K / ; A61K / ;
U.S. Cl.
CPC ...
424489 ; 424423 ; 424426 ; 424490 ; 514937 ; 514952 ;
Abstract
A sterile powder comprising microparticles, 0.1 to 50 .mu.m in diameter, obtainable by spray-drying and cross-linking a water-soluble material having free functional groups, is characterized in that the microparticles are hydrophilic, can be reconstituted in water to give a monodisperse suspension, and have retained said groups available for derivatization. The particles are linked to drugs or other functional molecules, and used as vehicles in therapy.