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. 12, 2017
Filed:
Apr. 26, 2013
Ulvac, Inc., Chigasaki-shi, Kanagawa, JP;
Masaki Ito, Chigasaki, JP;
Youichi Oohinata, Chigasaki, JP;
Katsuhiko Ito, Chigasaki, JP;
Takashi Hanamoto, Chigasaki, JP;
Takao Kinoshita, Chigasaki, JP;
ULVAC, INC., Chigasaki-shi, JP;
Abstract
A technology for protecting a valve seat inside a collection tank from the adherence of frozen particles in a vacuum freeze-drying apparatus and a frozen particle manufacturing method. The inside of a vacuum tank and a collection tank are vacuum evacuated; a raw material liquid is injected into the vacuum tank to produce frozen particles; and the frozen particles are piled up on a surface of a heating/cooling shelf. When the frozen particles on the heating/cooling shelf are transferred into the collection tank through the inside of an auxiliary pipe, the frozen particles do not adhere to a valve seat which surrounds an opening of a main pipe inside the collection tank.