Did You Know...
...that several people are credited with the invention of the flush toilet? Most people have heard of Thomas Crapper (1837-1910), the sanitary engineer who invented the valve-and-siphon arrangement that made the modern toilet possible. Another claimant to "the throne" was British inventor Alexander Cumming who patented a toilet in 1775. Then there's a nameless Minoan (a native of ancient Crete) who lived 4,000 years ago who supposedly was ahead of his time and created the first flush toilet!
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| Number | Title | Issue Date |
| 7404884 | Injection bonded articles and methods Injection bonded articles comprised of a rigid core and secured together with an elastomeric material network which also forms seals and encapsulates at least a portion of the rigid core. The elastomeric material is selected to be compatible with the material compri... | 07/29/2008 |
| 7138045 | Multi-path split cell spacer and electrodialysis stack design An electrodialysis method and apparatus include a source of concentrate fluid, a source of dilute fluid, a collector of treated concentrate fluid, a collector of dilute fluid, an anode and a cathode. A plurality of generally planar spacers are interleaved with a plu... | 11/21/2006 |
| 6919006 | Apparatus for macromolecule purification An electrophoresis apparatus, comprises a cartridge configured to be removably mounted in the apparatus, and a separation membrane positioned in the cartridge. The separation membrane has a first side along which a first flow path defined in a first grid element and... | 07/19/2005 |
| 6607647 | Electrodeionization apparatus with expanded conductive mesh electrode and method An electrodeionization apparatus and method of use includes an expanded conductive mesh electrode. The expanded conductive mesh electrode may be formed from any conductive material that is dimensionally stable and may be coated with conductive coating. Th... | 08/19/2003 |
| 6537436 | System for electrodialysis treatment of liquids An electrodialysis treatment system utilizing a plurality of disparate layers of an electrodialysis cell stack for separation of components in liquid mixtures. The system for electrodialysis treatment for purification and deionizing liquids includes provi... | 03/25/2003 |
| 6379518 | Electrodeionization apparatus and pure water producing apparatus The electrodeionization apparatus 3A has a plurality of cation exchange membrane and plurality of anion exchange membrane alternately arranged between electrodes in such a manner as to alternately form diluting compartments and concentrating compartments.... | 04/30/2002 |
| 6344122 | Electrodeionization apparatus An electrodeionization apparatus includes an anode; a cathode; cation-exchange membranes and anion-exchange membranes alternately arranged between the anode and the cathode; desalting compartments and concentrating compartments arranged alternately to be ... | 02/05/2002 |
| 5972191 | Electrodialysis apparatus A gasket for an electrodialysis cell assembly has a series flow path comprising a plurality of flow path sections joined by restrictor sections. Each of the flow path sections has a relatively wide width. The restrictor has less than the wide width so tha... | 10/26/1999 |
| 5702582 | Multi-port multi-stream valve apparatus Apparatus for selecting connections from each of two or more inlet streams, at least two of which flow simultaneously, to one or more exit streams of a group of at least two. The apparatus has at least one rotatable first body, a first surface of which is... | 12/30/1997 |
| 4461693 | Polarity reversal electrodes A polarity reversing electrodialysis membrane stack containing a composite electrode at each end of the stack with each electrode having anode and cathode portions electrically insulated from each other. Current is supplied to the anode portion of one ele... | 07/24/1984 |
| 4319978 | Spacer for electrodialysis stack An improved spacer for use in an electrodialysis stack, the spacer comprising an inner ply, two intermediate plies, and two outer plies of a compressible material. These plies are held together by a water-resistant, pressure-sensitive adhesive with the in... | 03/16/1982 |
