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Class Information
Number: 128/205.29
Name: Surgery > Respiratory method or device > Means for removing substance from respiratory gas > Particulate filtering
Description: Subject matter for filtering solid particles from respiratory gas.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7415981 |
Filter pad and protective hood |
Aug. 26, 2008 |
| 7404401 |
Water respirator filter |
Jul. 29, 2008 |
| 7343918 |
Breathing gas feed assembly for aircraft flight crew, and a stowage box for an emergency breathing mask |
Mar. 18, 2008 |
| 7237550 |
Respirator containing filter cases |
Jul. 3, 2007 |
| 7171964 |
Instant chemical based flexible oxygen in a non-pressurized flexible or rigid containment system |
Feb. 6, 2007 |
| 7156099 |
Nostril filtering system |
Jan. 2, 2007 |
| 7152600 |
Biohazard mask suitable for civilians |
Dec. 26, 2006 |
| 7131442 |
Fibrous filtration face mask |
Nov. 7, 2006 |
| 7114496 |
Filter cartridge with integrated inhalation and exhalation valves |
Oct. 3, 2006 |
| 7107990 |
Portable face protector for protecting human being from poisonous gas and securing visibility |
Sep. 19, 2006 |
| 7063087 |
Filtering system for the protection against biological agents |
Jun. 20, 2006 |
| 7036507 |
Filter mask |
May. 2, 2006 |
| 6971386 |
Personal respirator |
Dec. 6, 2005 |
| 6959709 |
Manner of attaching component elements to filtration material such as may be utilized in respiratory masks |
Nov. 1, 2005 |
| 6953544 |
Method of making a respirator that has a fluorinated electret |
Oct. 11, 2005 |
| 6923182 |
Crush resistant filtering face mask |
Aug. 2, 2005 |
| 6918141 |
Protective headgear system |
Jul. 19, 2005 |
| 6901930 |
Wearable electro-ionic protector against inhaled pathogens |
Jun. 7, 2005 |
| 6805124 |
Face mask that has a filtered exhalation valve |
Oct. 19, 2004 |
| 6805123 |
Compact multipurpose dustproof mask |
Oct. 19, 2004 |
| 6802315 |
Vapor deposition treated electret filter media |
Oct. 12, 2004 |
| 6799573 |
Air filtration system |
Oct. 5, 2004 |
| 6783574 |
Electret filter media and filtering masks that contain electret filter media |
Aug. 31, 2004 |
| 6780226 |
Charge stabilized electret filter media |
Aug. 24, 2004 |
| 6763830 |
Respirator with hinged visor |
Jul. 20, 2004 |
| 6763835 |
Chemical/biological special operations mask |
Jul. 20, 2004 |
| 6742518 |
Respirator filter |
Jun. 1, 2004 |
| 6733556 |
Antibacterial/antiviral filtering device for ventilation systems |
May. 11, 2004 |
| 6718981 |
Dental mask |
Apr. 13, 2004 |
| 6701925 |
Protective hood respirator |
Mar. 9, 2004 |
| 6659102 |
Oxygen mask filter system |
Dec. 9, 2003 |
| 6584976 |
Face mask that has a filtered exhalation valve |
Jul. 1, 2003 |
| 6575165 |
Apparatus and method for breathing apparatus component coupling |
Jun. 10, 2003 |
| 6564799 |
Multilumen filter |
May. 20, 2003 |
| 6550479 |
Personal respirator |
Apr. 22, 2003 |
| 6543450 |
Survival mask |
Apr. 8, 2003 |
| 6467481 |
Stackable filter device |
Oct. 22, 2002 |
| 6460539 |
Respirator that includes an integral filter element, an exhalation valve, and impactor element |
Oct. 8, 2002 |
| 6443154 |
Apparatus for the supply of a breathing gas |
Sep. 3, 2002 |
| 6427693 |
Face mask structure |
Aug. 6, 2002 |
| 6412486 |
Disposable filtering face mask and method of making same |
Jul. 2, 2002 |
| 6409806 |
Fluorinated electret |
Jun. 25, 2002 |
| 6408845 |
Respiratory filter |
Jun. 25, 2002 |
| 6403197 |
Filter material |
Jun. 11, 2002 |
| 6397842 |
Fluid-treatment devices |
Jun. 4, 2002 |
| 6397846 |
Moisture barrier and bacteria barrier for medical components |
Jun. 4, 2002 |
| 6394090 |
Flat-folded personal respiratory protection devices and processes for preparing same |
May. 28, 2002 |
| 6374823 |
Disposable ventilated face shield and head covering |
Apr. 23, 2002 |
| 6371116 |
Method and apparatus for pressurizing a protective hood enclosure with exhaled air |
Apr. 16, 2002 |
| 6363934 |
Respirator filter protective cover |
Apr. 2, 2002 |
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