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:
May. 21, 1991
Filed:
Aug. 18, 1989
Abstract
A method of producing a fine coated pharmaceutical preparation, which includes cooling fine liquid droplets composed of a liquid medium, a drug dissolved or suspended in the liquid medium, and as required, a binder to a temperature of not higher than the freezing point of the liquid medium to form frozen particles of the drug and as required the binder, adjusting the particle sizes of the fine frozen particles, mixing the fine frozen particles with a fine powder of a coating material having a particle diameter smaller than the particles at a temperature higher than the freezing point of the liquid medium to cause the fine powder of the coating material to adhere to the surfaces of the particles, and then removing the liquid medium from the resulting coated particles.