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:
Mar. 09, 1999
Filed:
Jun. 07, 1995
David C Bomberger, Belmont, CA (US);
Paul G Catz, Palo Alto, CA (US);
Mark I Smedley, Foster City, CA (US);
Paul C Stearns, Redwood City, CA (US);
SRI International, Menlo Park, CA (US);
Abstract
Method of producing microparticles loaded with biologically active drugs, including proteins such as ICAM-1, for controlled release of the drugs in a nasal passageway. The method includes introducing a drug/polymer feed solution and an emulsifier into a first mixing chamber to create an emulsion, then mixing a cross-linking agent together with the emulsion under controlled conditions to create microparticles loaded with the drug in a second mixing chamber. The formed microparticles are filtered and deaggregated to form individual microparticles that then may be formulated for nasal passageway delivery.