U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Did You Know...

...In 1790, the cost to obtain a patent was between $4 and $5.

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Class 34/299 - Desiccant or molecular sieve


Subclass of Class 34 - Drying and gas or vapor contact with solids
Definition: Apparatus wherein the gas or vapor is subjected to a substance
No. of patents: 6
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
7007406Powder formation by atmospheric spray-freeze drying
A method of manufacturing heat-sensitive pharmaceutical powder is disclosed. The original pharmaceutical substances are dissolved in a solution or suspended in a suspension, which is sprayed through an atomizing nozzle and frozen in a cold gas phase or liquid nitrog...
03/07/2006
5911917Preserved cellular structures
A process for preserving cellular structures includes the steps of pre-treating the structures with an aqueous polymeric water solution, drying the structures and then post-treating the structures with an organic solvent, non-water-base solution. Once the...
06/15/1999
5685087Fluid flow adsorbent container
A container is provided for housing desiccant material therein and for facilitating fluid flow therethrough to a surrounding environment. The container comprises a cup member including a base or bottom wall member and a generally cylindrically shaped oute...
11/11/1997
5035065Method and apparatus using molecular sieves for freeze drying
An apparatus and method is described for sequestering sublimating water vapor with molecular sieves during freeze drying. Long mesh columns of sieves permit unimpeded sublimating water vapor flow while efficiently adsorbing sublimating water vapor at high...
07/30/1991
4896436Spray drying process and apparatus therefor
The spray drying process and the apparatus therefor, of the present invention use a spray drying chamber formed by a heat-resistant porous membrane. Said porous membrane enables rapid separation of a discharge gas and a produced powder and accordingly tot...
01/30/1990
 
Sign InRegister
Username  
Password   
forgot password?