Issued Patents All Time
Showing 25 most recent of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11535529 | Water faucet incorporating disinfecting features | Chen Li | 2022-12-27 |
| 11274850 | Systems and methods for flow estimation using differential pressure sensor across valve | Camille M. Aucoin, Brennan H. Fentzlaff, Homero L. Noboa, Duane S. Freimuth, Kirk H. Drees +1 more | 2022-03-15 |
| 9314743 | Residential reverse osmosis system | Steven D. Kloos, Philip M. Rolchigo, Christopher Kurth, Chia Kung, Thomas Cartwright +1 more | 2016-04-19 |
| 8758627 | Twin tank water treatment method | John A. Stewart, Andrew Tischendorf, Rahul Sadashiv Kamble | 2014-06-24 |
| 8608963 | Twin tank water treatment system and method | John A. Stewart, Andrew Tischendorf, Rahul Sadashiv Kamble | 2013-12-17 |
| 8323484 | Method and system to flush an RO system | Chia Kung, Phillip Goebel, Thomas Cartwright, Peter S. Cartwright, Richard Reckin +1 more | 2012-12-04 |
| 8262910 | Residential reverse osmosis system | Steven D. Kloos, Philip M. Rolchigo, Christopher Kurth, Chia Kung, Thomas Cartwright +1 more | 2012-09-11 |
| 8141848 | Piston with integral seals for a water softener control valve | Andrew Elston, Gregory E. Sund, Mark S. Miller | 2012-03-27 |
| 8052865 | Residential reverse osmosis system | Steven D. Kloos, Philip M. Rolchigo, Christopher Kurth, Chia Kung, Thomas Cartwright +1 more | 2011-11-08 |
| D638908 | Triangular brine tank for a water softener | — | 2011-05-31 |
| D638512 | Triangular resin tank for a water softener | — | 2011-05-24 |
| 7862710 | Residential reverse osmosis system | Steven D. Kloos, Philip M. Rolchigo, Christopher Kurth, Chia Kung, Thomas Cartwright +1 more | 2011-01-04 |
| 7828970 | Residential reverse osmosis system | Steven D. Kloos, Philip M. Rolchigo, Christopher Kurth, Chia Kung, Thomas Cartwright +1 more | 2010-11-09 |
| 7828971 | Residential reverse osmosis system | Steven D. Kloos, Philip M. Rolchigo, Christopher Kurth, Chia Kung, Thomas Cartwright +1 more | 2010-11-09 |
| 7655139 | Method and system for operating a shut-off valve of a filtration system | Richard Reckin, Duane S. Freimuth | 2010-02-02 |
| 7610931 | Bypass valve with an integral flow sensor for a water treatment system | Mark J. Wittig, Thomas P. Honzelka | 2009-11-03 |
| 7597807 | Residential reverse osmosis system | Thomas Cartwright | 2009-10-06 |
| 7513996 | Residential reverse osmosis system | Steven D. Kloos, Philip M. Rolchigo, Christopher Kurth, Chia Kung, Thomas Cartwright +1 more | 2009-04-07 |
| 7402240 | Method and system to flush an RO system | Chia Kung, Phillip Goebel, Thomas Cartwright, Peter S. Cartwright, Richard Reckin +1 more | 2008-07-22 |
| 7329338 | Conductivity sensor for an ion exchange water softener | Mark J. Wittig | 2008-02-12 |
| 7004200 | Constant flow valve for a water softener control assembly | Mark J. Wittig, John D. Stolz, Jeffrey G. Franks | 2006-02-28 |
| 6481293 | Elbow mounted turbine flowmeter | Thomas J. Walczak, Thomas P. Honzelka | 2002-11-19 |
| 5701388 | Combined heater and pump | Michael D. Steinhardt, Isadore Balan | 1997-12-23 |
| 5681025 | Motor operated butterfly valve with a multi-function seal | Weldon R. Kuhn, John A. Fiumefreddo, Isadore Balan | 1997-10-28 |
| 5321860 | Shower enclosure assembly | Michael D. Steinhardt, Kathleen S. DeKeyser | 1994-06-21 |