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USPTO Patent Rankings Data through Dec 31, 2025
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Perry David Lithgow — 6 Patents in 2021

RPResmed Pty: 6 patents #17 of 254Top 7%
Sydney, AU: #22 of 600 inventorsTop 4%
Overall (2021): #20,837 of 548,734Top 4%
6 Patents 2021

Issued Patents 2021

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
11135394 Humidifier and/or flow generator for CPAP device Ian Malcolm Smith, John Michael Snow, Dan Kao 2021-10-05 $103,115,000
11103666 Mask assembly Michael Kassipillai Gunaratnam, Philip Rodney Kwok, Robin Garth Hitchcock, Lee James Veliss, Memduh Guney +3 more 2021-08-31 $82,316,000
11090455 Nasal assembly Michael Kassipillai Gunaratnam, Philip Rodney Kwok, Robin Garth Hitchcock, Lee James Veliss, Memduh Guney +3 more 2021-08-17 $251,530,000
11077276 Mask assembly Michael Kassipillai Gunaratnam, Philip Rodney Kwok, Robin Garth Hitchcock, Lee James Veliss, Memduh Guney +3 more 2021-08-03 $31,324,000
11000664 Mask assembly Michael Kassipillai Gunaratnam, Philip Rodney Kwok, Robin Garth Hitchcock, Lee James Veliss, Memduh Guney +3 more 2021-05-11 $202,016,000
10881820 Breathable gas apparatus with humidifier Geoffrey Crumblin, Michael Thomas Janiak, Dan Kao, Barton John Kenyon, Rohan Neil Primrose +5 more 2021-01-05 $86,921,000