For the Inventor, By the Inventor

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Toronto, Canada

Keilhauer (Partnership)

USPTO Granted Patents = 3

Forward Citations = 139

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6 inventors (with patents filed for the assignee):

Helen Elizabeth Kerr (2 out of 34 patents)

Steve Keilhauer (1 out of 4 patents)

Martin Bergmann (1 out of 35 patents)

4. Gernot Bohmann (1 out of 28 patents)

5. Harald Gründl (1 out of 14 patents)

6. Vlad Zila (1 out of 1 patent)

3 patents: Sort by Forward Citations

1. 7547067 - Tilt and swivel chair and mechanism therefor (2009-06-16),

2. D582692 - Bariatric chair (2008-12-16),

3. D572049 - Unified chair seat and back (2008-07-01),

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USPTO Data Jan 1 1976 - Jan 6 2026

3 Patents

#397 in Toronto

#4,252 in Canada

Toronto, Canada

Keilhauer (Partnership)

Forward Citations = 139

6 inventors:

Helen Elizabeth Kerr (2 out of 34 patents)

Steve Keilhauer (1 out of 4 patents)

Martin Bergmann (1 out of 35 patents)

4. Gernot Bohmann (1 out of 28 patents)

5. Harald Gründl (1 out of 14 patents)

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