Evert Alle Helfrich

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Bellevue, WA, US

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Patents Grantslast 30 patents

Information Patent Grant
Position sensing toothbrush
- Patent number 9,326,594
- Issue date May 3, 2016
- Koninklijke Philips N.V.
- Johannes Hotze Bernhard De Vries
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Position sensing toothbrush
- Patent number 9,049,920
- Issue date Jun 9, 2015
- Koninklijke Philips N.V.
- Johannes Hotze Bernhard De Vries
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE

Patents Applicationslast 30 patents

Information Patent Application
POSITION SENSING TOOTHBRUSH
- Publication number 20150230594
- Publication date Aug 20, 2015
- Koninklijke Philips N.V.
- JOHANNES HOTZE BERNHARD DE VRIES
- A46 - BRUSHWARE
Information Patent Application
INTERFACE STRUCTURE FOR LIQUID/AIR BURST DENTAL CLEANING APPLIANCE
- Publication number 20130330687
- Publication date Dec 12, 2013
- Koninklijke Philips N.V.
- Dainia Edwards
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
POSITION SENSING TOOTHBRUSH
- Publication number 20120246858
- Publication date Oct 4, 2012
- Koninklijke Philips Electronics N.V.
- Johannes Hotze Bernhard De Vries
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
DENTAL CLEANING MOUTHPIECE WITH REPLACEABLE BRISTLE FIELDS
- Publication number 20110247159
- Publication date Oct 13, 2011
- Koninklijke Philips Electronics N.V.
- Jelte Steur
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE