Inventor
KALK WILLIAM
US15 patents
Patents
15 patentsUS11560703B2Jan 24, 2023
Gravity-fed toilet with quiet siphonic flush
KOHLER CO5 citations84
US11427995B2Aug 30, 2022
Quiet flush actuator for pressure-assist toilets
KOHLER CO5 citations83
US11047123B2Jun 29, 2021
Gravity-fed toilet with quiet siphonic flush
KOHLER CO5 citations83
US11851864B2Dec 26, 2023
Gravity-fed toilet with quiet siphonic flush
KOHLER CO2 citations72
US10927537B2Feb 23, 2021
Line pressure-driven, tankless, siphonic toilet
KOHLER CO2 citations68
US12296074B2May 13, 2025
Collection panels for bathroom aerosols
KOHLER CO0 citations62
US12134885B2Nov 5, 2024
Plumbing fixture with electro-chlorinating device
KOHLER CO0 citations62
US12509868B2Dec 30, 2025
Quiet flush actuator for pressure-assist toilets
KOHLER CO0 citations61
US12209401B2Jan 28, 2025
Gravity-fed toilet with quiet siphonic flush
KOHLER CO0 citations61
US11987969B2May 21, 2024
Fluidics devices for plumbing fixtures
KOHLER CO0 citations61
US11933031B2Mar 19, 2024
Quiet flush actuator for pressure-assist toilets
KOHLER CO0 citations61
US11739517B2Aug 29, 2023
Fluidics devices for plumbing fixtures
KOHLER CO0 citations61
US10437263B2Oct 8, 2019
Toilet fill valve with improved noise performance
KOHLER CO1 citations61
US12595649B2Apr 7, 2026
Fluidics devices for plumbing fixtures
KOHLER CO0 citations60
US12139899B2Nov 12, 2024
Line pressure-driven, tankless, siphonic toilet
KOHLER CO0 citations56