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:
Aug. 11, 1998
Filed:
Jan. 24, 1997
Hisayoshi Kato, Tokyo, JP;
Nagayoshi Myo, Tokyo, JP;
Freund Industrial Co., Ltd., Tokyo, JP;
Abstract
To provide spherical particles made substantially from lactose and having high surface smoothness with low abrasiveness, and a process for their production. A process for producing spherical particles containing at least 95 wt % lactose, characterized by comprising a step of producing lactose spherical particles by charging crystalline lactose and/or lactose granules onto a rotary disk in the treatment vessel of a centrifugal tumbling apparatus, dispersing powdered lactose to the lactose granules and/or crystalline lactose as the rotary disk is rotated while providing slit air into the vessel, while also spraying water, an aqueous lactose solution or a dilute aqueous solution of a water-soluble polymer, and a fixation treatment step of drying the obtained spherical particles in a fluidized bed apparatus while spraying an aqueous lactose solution and/or a dilute solution of a water-soluble polymer.