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Class 34/300 - Using filter


Subclass of Class 34 - Drying and gas or vapor contact with solids
Definition: Process wherein the gas or vapor derived from the freeze-drying
No. of patents: 5
Last issue date: 10/07/2008


NumberTitleIssue Date
7431900Hydrogen peroxide vapor system with replaceable desiccant cartridge
A hydrogen peroxide vapor generation unit (10) receives hydrogen peroxide and water solution at an interface (20) and interconnects with an air dryer (14) by way of nipples (72, 92). In one embodiment, the dryer includes a clamping assemb...
10/07/2008
6904701Flask and method for drying biological materials
A device for holding substances during drying comprising a flask having a structure defining an opening. A pair of contiguous or juxtaposed filters is disposed in the opening. A freeze-drying assembly comprising a freeze-drying apparatus, and the device disposed in ...
06/14/2005
5673493Telecoping desiccant cartridge for an air dryer disposed in an air system
An air drying cartridge for use in an air drying system is disclosed. The air drying cartridge comprises a telescoping casing resiliently self adjustable in height which has an inner cylindrical apertured wall and an outer cylindrical apertured wall. The ...
10/07/1997
5423129Desiccant cartridge of an air dryer
A desiccant cartridge for use in a compressed air system comprising, a perforated stainless steel casing, a polyester felt support liner disposed against the inner surfaces of the perforated stainless steel casing, a pelletized moisture-absorbing material...
06/13/1995
4883507Filter comprising a material obtained by freeze-drying, method of preparation and use especially in pharmacy
The present invention relates, by way of a novel industrial product, to a filter for gaseous fluid, which contains a lyophilized and compressed filter element in the form of a porous layer....
11/28/1989
 
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