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!
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 6207612 | Removal of impurities from hydrocarbon streams The invention provides media for absorption of phosphate and metal contaminants from a hydrocarbon stream and a method of making such media. The media comprise alumina with relatively minor amounts of calcia and magnesia and are made by a process in which... | 03/27/2001 |
| 6089550 | Mass transfer process A dual flow mass transfer process is provided which employs a dual flow mass transfer tray having perforations, at least some of which are provided with vapor flow deflectors to deflect the flow of vapor rising through the perforations to give the vapor f... | 07/18/2000 |
| 6007915 | Shaped packing element A packing element with a plurality of symmetrically disposed subdivisions within a cylindrical body member provides a very strong, high temperature and corrosive media resistant structure with a large surface area. The elements are of great utility as dum... | 12/28/1999 |
| 5951827 | High capacity trays The provision of a fractionating column having fractionating trays designed to ensure that downflowing liquid exiting downcomers does not interfere with vapor passing up through perforations in the trays, ensures that weeping of the liquid through the per... | 09/14/1999 |
| 5911922 | Mass transfer device A mass transfer device is provided in the form of a tray having moveable valves which includes perforations spanned by bridge members shaped to divert liquid flowing in the design flow direction around the perforation such that gas rising through the perf... | 06/15/1999 |
| 5814249 | Support plate Support plates for packing materials in mass transfer towers made using parallel beams with generally inverted U-shaped cross-sections which contact one another along a line running the length of the beams, are provided with a trough member supported dire... | 09/29/1998 |
| 5770162 | Horizontal regenerative thermal oxidizer unit A regenerative thermal oxidizer unit comprising two heat regenerator units in which a gas to be purified from VOCs passes through the units in an essentially horizontal direction.... | 06/23/1998 |
| 5747143 | Packing element The invention provides novel mass transfer elements with a corrugated body structure and having ends turned back in a direction opposed to the curves of the corrugations such that the ends are turned towards one another. These elements are particularly ef... | 05/05/1998 |
| 5733842 | Method of making porous catalyst carrier without the addition of pore forming agents An improved catalyst carrier is formed by a process that comprises the use of ceramic particle components with particle sizes chosen to ensure that a desired degree of porosity is obtained without recourse to the use of organic burnout materials.... | 03/31/1998 |
| 5733840 | Catalyst carrier A process for the production of an alumina based catalyst carrier in which a fired carrier body is impregnated with a source of titania in a liquid medium that upon heating yields titania and then calcined to generate titania uniformly dispersed in the ca... | 03/31/1998 |
| 5731250 | Corrosion resistant ceramic bodies Ceramic bodies comprised mainly of zircon and wollastonite, with zircon being the dominant crystalline phase, show improved resistance to alkaline conditions at elevated temperatures than conventional bodies and excellent thermal stability.... | 03/24/1998 |
| 5688444 | Tower packing element Tower packing element comprising a tubular body member with an essentially triangular cross-section and having projections within the element extending from the inside surface of the body member, is provided. The axial length of the tubular body member is... | 11/18/1997 |
| 5484757 | Titania-based catalyst carriers Advantageous titania based catalyst carriers for use in applications requiring a balance of surface area and crush strength can be obtained by using as the starting material a titania hydrate pulp with a surface area above about 200 m2 /g and a... | 01/16/1996 |
| 5266548 | Catalyst carrier Porous carrier materials comprising at least 90% by weight of at least 95% pure alpha alumina are very effective as supports for catalysts treating engine exhausts and are significantly better able to withstand extreme conditions than conventional support... | 11/30/1993 |
