Abstract: A pop-up drain assembly for a basin, comprising a stopper apparatus comprising a push cap coupled to an upper end of a post, and a sealing diaphragm coupled to a lower portion of the post, and a drain sieve configured to prevent hair from passing through the drain, wherein the stopper apparatus is configured to be reversibly moved between an extended open position and an inserted closed position, and wherein the drain sieve reversibly moves together with the push cap, or is static and does not substantially move together with the push cap.

Abstract: A modular bath or shower panel assembly, comprising a left panel; a center panel; and a right panel, wherein the left panel comprises a side section and a center section having a functional end, the center panel comprises a left functional end and a right functional end, the right panel comprises a side section and a center section having a functional end, and wherein, upon installation of the assembly, the left panel functional end and the right panel functional end are configured to couple to the center panel left functional end and center panel right functional end, respectively.

Abstract: A comfortable toilet seat, wherein the seat comprises a top circumferential seating surface having an inner edge, an outer edge, a front, and a back, wherein the seat is substantially symmetrical about a bisecting center line from front to back, the inner edge comprises a downward curve from the seat front towards the seat back, the outer edge comprises a downward curve followed by a lesser upward curve from the back to the front, and a back top seating surface comprises a steep upward curve from front to back.

Abstract: A microfluidic oscillator nozzle, comprising a nozzle body comprising an exterior surface; an interior surface defining a three-dimensional space therein; a fluid inlet; and a fluid outlet, wherein the three-dimensional space, the fluid inlet, and the fluid outlet are inflow communication, the three-dimensional space comprises a first fluid interaction region fluidly coupled to a first pair of feedback flow paths, and wherein a largest nozzle dimension is less than about 20.0 mm.