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Class Information
Number: 128/206.17
Name: Surgery > Respiratory method or device > Means for removing substance from respiratory gas > Particulate filtering > Face mask covering a breathing passage > With separate filter encircling element, or housing, securing filter on mask
Description: Subject matter including a separate filter encircling element, or housing, securing the filter on the mask.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6050262 |
Overpressure ventilation device for a gas mask |
Apr. 18, 2000 |
| 6044842 |
Gasketless connecting adapter |
Apr. 4, 2000 |
| 6016804 |
Respiratory mask and method of making thereof |
Jan. 25, 2000 |
| 5996580 |
Personal emergency breathing system with locator for supplied air respirators and shock resistant filter mounting |
Dec. 7, 1999 |
| 5967142 |
Method for connecting two components, especially in the assembly of diaphragm valves |
Oct. 19, 1999 |
| 5964218 |
Face mask with back-up smoke inhalation protection and method of operation |
Oct. 12, 1999 |
| 5957131 |
Biological warfare mask |
Sep. 28, 1999 |
| 5924420 |
Full face respirator mask having integral connectors disposed in lens area |
Jul. 20, 1999 |
| 5886032 |
Method of treating cyanide poisoning |
Mar. 23, 1999 |
| 5875775 |
Protective breathing mask |
Mar. 2, 1999 |
| 5797974 |
Respiratory filter and sampling device |
Aug. 25, 1998 |
| 5794617 |
Face mask and retainer |
Aug. 18, 1998 |
| 5782235 |
Valved filter connection piece for a gas mask |
Jul. 21, 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 |
| 5732695 |
Respirator filtration device |
Mar. 31, 1998 |
| 5669375 |
Breathing mask |
Sep. 23, 1997 |
| 5666949 |
Exposure indicator with continuous alarm signal indicating multiple conditions |
Sep. 16, 1997 |
| 5660173 |
Frustum layered canister |
Aug. 26, 1997 |
| 5659296 |
Exposure indicating apparatus |
Aug. 19, 1997 |
| 5651810 |
Apparatus and method for filtering and sampling airborne respiratory contaminants |
Jul. 29, 1997 |
| 5647356 |
Respirator cartridge with sealing fit test structure and method of use |
Jul. 15, 1997 |
| 5640952 |
Personal emergency breathing system for supplied air respirators |
Jun. 24, 1997 |
| 5628308 |
Heat and fire resistant respiratory filtration mask |
May. 13, 1997 |
| 5619989 |
Respirator filter |
Apr. 15, 1997 |
| 5595173 |
Rehumidification filter for ventilation mask |
Jan. 21, 1997 |
| 5592937 |
Respirator mask with stiffening elements |
Jan. 14, 1997 |
| 5579761 |
Respirator having snap-fit filter cartridge |
Dec. 3, 1996 |
| 5535736 |
Inflatable mouthpiece |
Jul. 16, 1996 |
| 5505197 |
Respirator mask with tapered filter mount and valve aligning pins and ears |
Apr. 9, 1996 |
| 5503141 |
Microphone mounting structure for a sound amplifying respirator |
Apr. 2, 1996 |
| 5478377 |
Filter for a respiratory device |
Dec. 26, 1995 |
| 5464010 |
Convenient "drop-down" respirator harness structure and method of use |
Nov. 7, 1995 |
| RE35062 |
Filter element |
Oct. 17, 1995 |
| 5450844 |
Locking device for the container of a gas mask and breathing equipment |
Sep. 19, 1995 |
| 5446925 |
Adjustable face shield |
Sep. 5, 1995 |
| 5427092 |
Respirator |
Jun. 27, 1995 |
| 5413097 |
Fan-supported gas mask and breathing equipment with adjustable fan output |
May. 9, 1995 |
| 5411021 |
Breathing mask with speaking device |
May. 2, 1995 |
| 5411057 |
Detachable inhalation valve device for a respirator filter assembly |
May. 2, 1995 |
| 5404874 |
Device for connecting a fan to a face mask filter |
Apr. 11, 1995 |
| 5374458 |
Molded, multiple-layer face mask |
Dec. 20, 1994 |
| 5372130 |
Face mask assembly and method having a fan and replaceable filter |
Dec. 13, 1994 |
| 5357947 |
Face mask |
Oct. 25, 1994 |
| 5353789 |
A flaccid mask with straps and a supporting element that force the mask into sealing engagement with the wearer's face in response to force exerted by the straps on the supporting element |
Oct. 11, 1994 |
| 5331957 |
Respirator for only filtering air inhaled |
Jul. 26, 1994 |
| 5303701 |
Blower-supported gas mask and breathing equipment with an attachable control part |
Apr. 19, 1994 |
| 5240479 |
Pleated filter media having a continuous bead of adhesive between layers of filtering material |
Aug. 31, 1993 |
| 5224473 |
Retrofitting gas mask voice amplifier unit with easily actuated switch means |
Jul. 6, 1993 |
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