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 |
| 5891968 | Method of making self-doped zwitterionic heterocyclic polymers A self-doped conducting polymer having along its backbone a π-electron conjugated system which comprises a plurality of monomer units, between about 0.01 and 100 mole % of the units having covalently linked thereto at least one Bronsted acid group. The c... | 04/06/1999 |
| 5867363 | Energy storage device A dry preunit (10), includes a plurality of cells (110, 112, 114) in a true bipolar configuration, which are stacked and bonded together, to impart to the device an integral and unitary construction. Each cell (114) includes two electrically conductive el... | 02/02/1999 |
| 5863981 | Electrically conducting water-soluble self-doping polyaniline polymers and the aqueous solutions thereof A self-doped conducting polymer having along its backbone a π-electron conjugated system which comprises a plurality of monomer units, between about 0.01 and 100 mole % of the units having covalently linked thereto at least one Bronsted acid group. The c... | 01/26/1999 |
| 5849695 | Parathyroid hormone analogues useful for treatment of osteoporosis and disorders of calcium meatabolism in mammals The present invention relates polypeptide analogs which have agonist or antagonist or tissue selection properties relative to parathyroid hormone (PTH), parathyroid hormone-like protein (PLP) or parathyroid-related protein (PTHrP). The serine amino acid a... | 12/15/1998 |
| 5837032 | Gas separations utilizing glassy polymer membranes at sub-ambient temperatures This invention relates to a method of an apparatus and method for separating component gases in a gas mixture employing a glassy polymer membrane at temperatures at or slightly above the freezing point of any liquid present so as to achieve superior separ... | 11/17/1998 |
| 5821033 | Photolithographic production of microprotrusions for use as a space separator in an electrical storage device The present invention relates to a photolithographic method to produce multiple, electrically insulating microprotrusions on an electrically conducting substrate to produce and maintain substantially uniform space separation between the substrates which a... | 10/13/1998 |
| 5760169 | Self-doped polymers A self-doped conducting polymer having along its backbone a π-electron conjugated system which comprises a plurality of monomer units, between about 0.01 and 100 mole % of the units having covalently linked thereto at least one Bronsted acid group. The c... | 06/02/1998 |
| 5730714 | Method for the iontophoretic non-invasive determination of the in vivo concentration level of glucose The present invention relates to an vitro device for the removal of ionized substances from a membrane sample without mechanical penetration, which device comprises: (a) a positive electrode; (b) a negative electrode, and (c) electrical insulation between subp... | 03/24/1998 |
| 5711988 | Energy storage device and its methods of manufacture A dry preunit (10), includes a plurality of cells (110, 112, 114) in a true bipolar configuration, which are stacked and bonded together, to impart to the device an integral and unitary construction. Each cell (114) includes two electrically conductive el... | 01/27/1998 |
| 5709800 | Environmentally acceptable waste disposal by hydrothermal decomposition of labile compounds with nitrite The present invention relates to a process for the disposal of waste or the conversion of hydrothermally labile chemical groups and compounds to species which are environmentally acceptable, or are amendable to further degradation by conventional disposal... | 01/20/1998 |
| 5679133 | Gas separations utilizing glassy polymer membranes at sub-ambient temperatures This invention relates to a method of and apparatus for separating component gases in a gas mixture employing a glassy polymer membrane at temperatures of 5° C. or less so as to achieve superior separation of gas components.... | 10/21/1997 |
| 5650479 | Interfacially polymerized polyester films The present invention concerns a polyester gas separation membrane which is obtained by the interfacial polymerization of benzenetricarbonyl trihalide or benzene tetracarbonyl tetrahalide in a water-insoluble organic solvent in one phase and a variety of ... | 07/22/1997 |
| 5650198 | Defect reduction in the growth of group III nitrides The present invention relates to an improved method to produce Group III nitride thin film having a lower defect density, which method comprises: (a) combining under metalorganic chemical vapor deposition (MOCVD) conditions at least one Group III metalorganic ... | 07/22/1997 |
| 5637759 | Metal-ligating amino acid derivatives for MRI and for peptide synthesis Novel organic compounds and metal ion-containing amino acid chelates are described which are useful in solid phase synthesis of polypeptides and as magnetic resonance imaging (MRI) enhancing agents. The present invention also relates to a convenient and s... | 06/10/1997 |
| 5624564 | Process for dehydration and concentration of sewage sludge In a process for dehydration and concentration of sewage sludge containing activated sludge with the aid of organic and/or inorganic flocculators, the activated sludge content is produced in an aerated biological purification stage in presence of a compos... | 04/29/1997 |
| 5589565 | Water-soluble conducting polyphenylene vinylene polymers A self-doped conducting polymer having along its backbone a π-electron conjugated system which comprises a plurality of monomer units, between about 0.01 and 100 mole % of the units having covalently linked thereto at least one Bronsted acid group. The c... | 12/31/1996 |
| 5583240 | Exothermic process with porous means to control reaction rate and exothermic heat An exothermic process for forming a product which may be in a liquid phase is disclosed wherein a first reactant, preferably a liquid reactant, is directly fed into a reaction zone containing mixing elements and which comprises a first compartment of a re... | 12/10/1996 |
