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Class Information
Number: 128/868
Name: Surgery > Body protecting or restraining devices for patients or infants (e.g., shields, immobilizers) > Head or face protector (e.g., lips, ears, etc.) > Aural protectors (e.g., ear) > With noise or pressure attenuating means (e.g., dampening, filtering, etc.) > Valve means (e.g., diaphragm)
Description: Subject matter wherein the ear protecting means is a membraneous structure which prevents the entrance of noise into the ear canal.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7475686 |
Earplug |
Jan. 13, 2009 |
| 7185655 |
Underwater ear prophylactic |
Mar. 6, 2007 |
| 6082485 |
Adjustable earplug |
Jul. 4, 2000 |
| 6068079 |
Acoustic valve capable of selective and non-linear filtering of sound |
May. 30, 2000 |
| 4896679 |
Method and apparatus for the exclusion of sound and water from the auditory canal |
Jan. 30, 1990 |
| 4807612 |
Passive ear protector |
Feb. 28, 1989 |
| 4568337 |
Ventilation tube permitting two-way gaseous communication with one-way liquid valve |
Feb. 4, 1986 |
| 4529057 |
Ear defenders |
Jul. 16, 1985 |
| 4326512 |
Composite ventilation tube for the middle ear |
Apr. 27, 1982 |
| 4168697 |
Middle ear ventilating tube and method |
Sep. 25, 1979 |
| 4094303 |
Tympanic membrane vent |
Jun. 13, 1978 |
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