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Class Information
Number: 128/206.12
Name: Surgery > Respiratory method or device > Means for removing substance from respiratory gas > Particulate filtering > Face mask covering a breathing passage
Description: Subject matter including a wall-like structure covering a breathing passage plus a portion of the face.










Sub-classes under this class:

Class Number Class Name Patents
128/206.19 Body of mask, other than viewing means, formed of porous filter material (e.g., surgical mask formed entirely of cloth, etc.) 239
128/206.18 Covering nose only 76
128/206.14 Mask adhesively attached to face 39
128/206.13 Mask attached to ear 62
128/206.16 With frame, shaping means, reinforcement, or filter formed of wire 74
128/206.15 With gas flow control valve 137
128/206.17 With separate filter encircling element, or housing, securing filter on mask 181


Patents under this class:
1 2 3 4 5 6 7

Patent Number Title Of Patent Date Issued
4608975 Emergency breathing apparatus Sep. 2, 1986
4579113 Disposable covers for respirators Apr. 1, 1986
4549543 Air filtering face mask Oct. 29, 1985
4510931 Barrier for use during cardiopulmonary resuscitation Apr. 16, 1985
4473072 Ready use respirator Sep. 25, 1984
4419994 Respirators Dec. 13, 1983
4417575 Respirators Nov. 29, 1983
4373522 Emergency fresh air supply device Feb. 15, 1983
4361146 Filtering respirator Nov. 30, 1982
4331139 Emergency breathing apparatus May. 25, 1982
4323063 Medical face mask Apr. 6, 1982
4320756 Fresh-air breathing device and method Mar. 23, 1982
4304230 Liquid barrier filter and method of operation Dec. 8, 1981
4300549 Operating room face mask Nov. 17, 1981
4296746 Disposable full-face surgical mask Oct. 27, 1981
4205043 Hazardous atmosphere badge May. 27, 1980
4154586 Respirator cartridge end-of-service lift indicator system and method of making May. 15, 1979
4146026 Filter mask Mar. 27, 1979
4098270 Smoke mask apparatus Jul. 4, 1978
4090510 Face mask with exchangeable filter May. 23, 1978
4038979 Sanitary face mask Aug. 2, 1977
4019511 Portable conditioned air breathing device Apr. 26, 1977
4019508 Wearable, self-contained fully mobile personal breathing apparatus for surgeons and operating room personnel Apr. 26, 1977

1 2 3 4 5 6 7










 
 
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