David A. Hotvet

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Savage, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Water resistant acoustic port in ear-mouthed hearing device
- Patent number 9,636,259
- Issue date May 2, 2017
- 3M Innovative Properties Company
- Paul D. Henry
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Directional ear device with adaptive bandwidth and gain control
- Patent number 5,550,923
- Issue date Aug 27, 1996
- Minnesota Mining and Manufacturing Company
- David A. Hotvet
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Attachment device for a probe microphone
- Patent number 4,827,525
- Issue date May 2, 1989
- Minnesota Mining and Manufacturing Company
- David A. Hotvet
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Automatic gain control for hearing aid
- Patent number 4,718,099
- Issue date Jan 5, 1988
- Telex Communications, Inc.
- David A. Hotvet
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
WATER RESISTANT ACOUSTIC PORT IN EAR-MOUNTED HEARING DEVICE
- Publication number 20160030246
- Publication date Feb 4, 2016
- 3M Innovative Properties Company
- Paul D. Henry
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE