OOVO products represent embodiments of multiple pending patent applications and/or granted patents filed with the United States Patent and Trademark Office:
- US 16/105,174 – Apparatus for Semi-Occluded Vocal Tract Exercises
- US 29680824 – Improved Apparatus for Semi-Occluded Vocal Tract Exercises
- US 62927629 – Apparatus and Method for Performing Semi-Occluded Vocal Tract Exercises
- US 29/711,053 – Vocal Training and Therapy Apparatus
- US-11794072-B2 – Apparatus and method for performing semi-occluded vocal tract exercises
- US-D933247-S – Apparatus for semi-occluded vocal tract exercises
- US-D927702-S – Vocal training and therapy apparatus
- US 18217939 – Apparatus and method for performing semi-occluded vocal tract exercises
OOVO and Sing Ring are USPTO trademarks with registration numbers 88750130, 88097544, and 97740762.
