Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Chemistry
Class Information
Number: 55/DIG.33
Name: Gas separation > Gas mask canister
Description:










Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8574331 Air-treatment mask systems, and related methods and air-treatment masks Nov. 5, 2013
8512434 Molded monocomponent monolayer respirator Aug. 20, 2013
8460423 Filter cartridge having central plenum and housing sidewall Jun. 11, 2013
8333824 Sorption agent comprising an activated carbon impregnated with a zinc compound and a molybdenum compound and gas-filtering element containing the sorption agent Dec. 18, 2012
8292991 Gas mask filter canister Oct. 23, 2012
8293333 Ammonia-free gaseous air filter Oct. 23, 2012
8262782 Respirator filter canister Sep. 11, 2012
8252081 Water dissipation device and method Aug. 28, 2012
8236081 Permeable membrane water dissipation device Aug. 7, 2012
7390351 Electrets and compounds useful in electrets Jun. 24, 2008
7320722 Respiratory protection device that has rapid threaded clean air source attachment Jan. 22, 2008
7311764 Gas mask filter canister Dec. 25, 2007
7246406 Dust collection system Jul. 24, 2007
7244291 Electret article having high fluorosaturation ratio Jul. 17, 2007
7244292 Electret article having heteroatoms and low fluorosaturation ratio Jul. 17, 2007
7160369 Adsorption filter material with high adsorption capacity and low breakthrough behavior Jan. 9, 2007
7118608 Self-powered, wearable personal air purifier Oct. 10, 2006
7101423 Respiratory air filter Sep. 5, 2006
7014692 Scrubber Mar. 21, 2006
7008465 Cleanable high efficiency filter media structure and applications for use Mar. 7, 2006
6997976 Filtering devices Feb. 14, 2006
6874499 Filter element that has a thermo-formed housing around filter material Apr. 5, 2005
6840986 Air purifying filter systems for building air supply and respirators useful against NBC attacks Jan. 11, 2005
6818035 Window biological and chemical contamination filter Nov. 16, 2004
6793702 Filter cartridge platform and filter cartridge for use on the platform Sep. 21, 2004
6783566 Combination filter/cartridge assembly Aug. 31, 2004
6742518 Respirator filter Jun. 1, 2004
6497756 Service life indicator for respirator cartridge Dec. 24, 2002
6485546 Filtering device and cartridges for fluids and gases Nov. 26, 2002
6408845 Respiratory filter Jun. 25, 2002
6363934 Respirator filter protective cover Apr. 2, 2002
6277178 Respirator and filter cartridge Aug. 21, 2001
6214094 Electret filters that exhibit increased oily mist resistance Apr. 10, 2001
6146449 Reusable canister for a gas mask Nov. 14, 2000
6044842 Gasketless connecting adapter Apr. 4, 2000
5944873 Device for removing one or more undesirable or dangerous substances from a gas or vapor mixture and a gas mask comprising such a device Aug. 31, 1999
5797974 Respiratory filter and sampling device Aug. 25, 1998
5776213 Respiratory filter and sampling device Jul. 7, 1998
5766286 Respiratory filter and sampling device Jun. 16, 1998
5766287 Respiratory filter and sampling device Jun. 16, 1998
5736041 Filter element Apr. 7, 1998
5714126 Respirator filter system Feb. 3, 1998
5651810 Apparatus and method for filtering and sampling airborne respiratory contaminants Jul. 29, 1997
5531803 Metal cover for respirator cartridge Jul. 2, 1996
5487380 Exhaled gas filter and cooler Jan. 30, 1996
5478377 Filter for a respiratory device Dec. 26, 1995
5240479 Pleated filter media having a continuous bead of adhesive between layers of filtering material Aug. 31, 1993
5063926 Respirator cartridge with sealant dispersion member Nov. 12, 1991
4921512 Filter element May. 1, 1990
4867770 Filter cartridge Sep. 19, 1989

1 2










 
 
  Recently Added Patents
Autonomous downlink code selection for femto cells
Synchronization of sound generated in binaural hearing system
Toy
System and method for removing oxide from a sensor clip assembly
Behavioral fingerprint based authentication
Character input device and program for displaying next word candidates based on the candidates' usage history
Measuring current and resistance using combined diodes/resistor structure to monitor integrated circuit manufacturing process variations
  Randomly Featured Patents
Combined book closure and page indexing device
Security box apparatus
Video camera
Minnow dipper with automatic partitioning access door
Plate conveyor having rapid assembly device
Multi-edged cutter
Inter-half call protocol negotiation techniques
Printer with copying function
Plant watering system and process
Coumestan-like antioxidants and UV absorbants