% Expired Patents = 20.0

Trademarks = 26

Forward Citations = 144

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4 inventors (with patents filed for the assignee):

Rolf Engelhard (3 out of 23 patents)

Donavan J Allen (2 out of 12 patents)

Albert W Gebhard (1 out of 72 patents)

4. Mark W Allen (1 out of 1 patent)

5 patents: Sort by Forward Citations

1. 9144359 - Carpet cleaning device (2015-09-29),

2. 6725500 - Air recirculating surface cleaning device (2004-04-27),

3. 5709799 - Super ozonating water purifier (1998-01-20),

4. 5540848 - Filter retainer for water purification unit (1996-07-30),

5. D357058 - Water purification unit (1995-04-04),

Vortex, LLC is a leading technology company specializing in advanced data analytics and artificial intelligence solutions. With a focus on empowering businesses with actionable insights, Vortex provides cutting-edge software and consulting services to help clients make informed decisions and drive innovation.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

5 Patents

#6 in Salisbury, NC

#1,123 in North Carolina

#51,570 in US

Salisbury, NC, United States of America

Vortex, LLC

Forward Citations = 144

4 inventors:

Rolf Engelhard (3 out of 23 patents)

Donavan J Allen (2 out of 12 patents)

Albert W Gebhard (1 out of 72 patents)

4. Mark W Allen (1 out of 1 patent)

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