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VIRTUAL CORPORATION
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PORTLAND, OR, US
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Patents Grants
last 30 patents
Information
Patent Grant
Real-time hearing aid simulation
Patent number
5,386,475
Issue date
Jan 31, 1995
Virtual Corporation
Jonathan D. Birck
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Acoustic admittance measuring apparatus with wide dynamic range and...
Patent number
4,966,160
Issue date
Oct 30, 1990
Virtual Corporation
Jonathan D. Birck
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
NIH Research Project
last 12 months
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Count: 3
Research Projects
Information
Research Project
INFANT HEARING SCREENER INCORPORATING OAE AND ABR
Application id
2127638
Award notice date
Sep 28, 1994
Information
Research Project
AUDITORY AND VISUAL HEARING TEST SOFTWARE
Application id
2127044
Award notice date
Sep 30, 1993
Information
Research Project
A DUAL-PROBE IMPEDANCE TESTER
Application id
3494710
Award notice date
Jan 31, 1991