William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.
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| Number | Title | Issue Date |
| 8148563 | Chemical compositions and methods of making them Bimetal chelates are prepared from a solution formed by adding to a solvent one or more polyfunctional acids with basic salts of two or more coordination elements listed in Groups IIIA to VIIIA, Groups IB to IIIB, of periods 4 and 5 and aluminum in Group IIIB, perio... | 04/03/2012 |
| 7351770 | Ionic hydrophilic high molecular weight redox polymers for use in enzymatic electrochemical-based sensors Ionic hydrophilic high molecular weight redox polymers for use in enzymatic electrochemical-based sensors include a hydrophilic polymer (such as a hydrophilic polymer backbone) with ionic portions (e.g., cationic monomers incorporated in the hydrophilic polymer back... | 04/01/2008 |
| 7241926 | Method for producing polyether alcohols A process for preparing polyether alcohols by addition of alkylene oxides onto H-functional starter substances in the presence of multimetal cyanide catalysts, wherein the multimetal cyanide catalysts are microporous and have a specific surface area of more than 100... | 07/10/2007 |
| 6992202 | Single-source precursors for ternary chalcopyrite materials, and methods of making and using the same A single source precursor for depositing ternary I-III-VI2 chalcopyrite materials useful as semiconductors. The single source precursor has the I-III-VI2 stoichiometry “built into” a single precursor molecular structure which degrades on he... | 01/31/2006 |
| 6979708 | Hydrotalcites, syntheses, and uses Synthetic hydrotalcites of the general formula [M2+1−xM3+x(OH)2]x+[An−x/n.mH2O]x− where M2+ is a divalent... | 12/27/2005 |
| 6359159 | MOCVD precursors based on organometalloid ligands Chemical vapor deposition processes utilize as precursors volatile metal complexes with ligands containing metalloid elements silicon, germanium, tin or lead.... | 03/19/2002 |
| 6340768 | MOCVD precursors based on organometalloid ligands Volatile metal complexes with -sila-ଲ-diketonate ligands containing haloalkyl, and particularly, perfluoroalkyl, substitutents are useful as metal precursors for chemical vapor deposition processes and as nanostructured materials containing f... | 01/22/2002 |
| 6297392 | Group IV elements-bridged metallocene catalyst for preparing bimodal olefin polymers A novel Group IV elements-bridged metallocene complex is disclosed which is represented by the following formula (I): ##STR1## wherein R and R1 are different and are independently selected from the group consisting of η5 -cyclopenta... | 10/02/2001 |
| 6184403 | MOCVD precursors based on organometalloid ligands Chemical vapor deposition processes utilize as precursors volatile metal complexes with ligands containing metalloid elements silicon, germanium, tin or lead.... | 02/06/2001 |
| 6096693 | Zinc-molybdenum-based dithiocarbamate derivative, method of producing the same, and lubricant composition containing the same The present invention is directed to a zinc-molybdenum-based dithiocarbamate derivative which is a complex salt having the metallic components of zinc and molybdenum in the same molecule. When used as a lubricant additive, it imparts a notable friction-re... | 08/01/2000 |
| 6084033 | Bimetallic complex catalyst systems, their preparations and application in the hydrogenation of unsaturated copolymers The present invention relates to a new bimetallic complex catalyst system having the empirical formula of M1a M2b Xm (L1)n, wherein M1 is Rh or Ru, M2 is Ru or a... | 07/04/2000 |
| 5932190 | Multinuclear complexes for X-ray imaging An x-ray contrast medium containing a multinuclear complex of the formula (M6 (μ3 B)8 Av)x Lw, wherein M is Mo, W, Re Tc, V, Nb, Ta, Ru, or Fe; μ3 B represent a tridentate bridging ... | 08/03/1999 |
| 5763370 | Friction-reducing and antiwear/EP additives for lubricants Pre-blended combinations and reaction products of at least one metallic dithiocarbamate and at least one metallic dithiophosphate provide the synergism of antiwear properties with friction-reducing properties for lubricants and greases.... | 06/09/1998 |
| 5683614 | Sol-gel type synthesis of Bi2 (Sr,Ta2)O9 using an acetate based system A method of forming a layered-perovskite bismuth-strontium-tantalum oxide (SBT) ferroelectric material is performed by dissolving a bismuth compound in a first solvent to form a first solution, mixing a strontium compound and a tantalum compound to form a... | 11/04/1997 |
| 5639843 | Organometallic acrylamide compositions and methods for making same, including antifouling agents and usage thereof The present invention relates to novel reaction products of azlactones and organometallic nucleophiles and the method of making these reaction products. The invention also relates to methods of using such reaction products to prevent or eliminate microbia... | 06/17/1997 |
| 5627295 | Synthesis of higher alcohols A higher alcohol synthesis catalyst precursor comprises a homogeneous, highly crystalline, hydroxycarbonate compound containing copper, zinc and at least one element selected from the group consisting of aluminium, manganese and chromium. It also comprise... | 05/06/1997 |
| 5612082 | Process for making metal oxides Metals are reacted in a first solvent, such as 2-methoxyethanol, to form an initial precursor comprising metal-oxide compounds dissolved in the first solvent. A second solvent, such as xylene, that does not react with the metal is added to the solution an... | 03/18/1997 |
| 5583243 | Salts of alpha-hydroxy aliphatic carboxylic acids and uses thereof Novel salts are prepared wherein the cation of the salt is a divalent or trivalent cation which is an essential trace element comprising a 1:1 ratio of a complex ion formed between a trace mineral and methionine and any suitable anion, either inorganic or... | 12/10/1996 |
| 5559260 | Precursors and processes for making metal oxides A precursor is made by mixing a metal alkoxycarboxylate-containing liquid with a 2-ethylhexanoic acid in an effective amount for shelf-stabilizing said liquid by substituting 2-ethylhexanoate ligands for alkoxide ligands, thereby forming a mixture, and he... | 09/24/1996 |
| 5527752 | Catalysts for the production of polyolefins A catalyst precursor is provided which is useful, when combined with a cocatalyst, in the manufacture of polyolefins. The catalyst precursor is of the formula: ##STR1## where M is a transition metal, preferably Zr or Hf; L is a substituted or un... | 06/18/1996 |
| 5518704 | Nickel and cobalt containing hydrotalcite-like materials having a sheet-like morphology and process for production thereof A synthetic nickel (or cobalt) containing hydrotalcite-like material having a sheet-like morphology and a sheet broadness to thickness ratio of at least 50 and a formula M1-x Alx (OH)2 .multidot.xA.multidot.mH2 ... | 05/21/1996 |
| 5514822 | Precursors and processes for making metal oxides A first metal, an alcohol, and a carboxylic acid are reacted to form a metal alkoxycarboxylate which is then reacted with an alkoxide and/or a carboxylate of a second metal to form a precursor. Alternatively, a metal carboxylate and a metal alkoxide are c... | 05/07/1996 |
| 5482699 | Multinuclear complexes for x-ray imaging An imaging contrast medium comprising a physiologically tolerable multinuclear complex (as defined in claim 1) is disclosed. The multinuclear complex contains at least two, but preferably three or more contrast enhancing atoms. For X-ray or ultrasound ima... | 01/09/1996 |
| 5435937 | Fluorescent compounds Novel compounds obtainable by reacting together an imido-reagent such as diphenylphosphonimidotriphenylphosphorane) with a chelate of a transition or lanthanide or actinide metal, such as tris(dibenzoylmethide) europium III, has the property of fluorescin... | 07/25/1995 |
| 5399329 | Hydrotalcite-like materials having a sheet-like morphology and process for production thereof A synthetic hydrotalcite-like material having a sheet-like morphology and a sheet broadness to thickness ratio of at least 50 and a formula Mg1-x Alx (OH)2.xA.mH.sub.2 O where A is a mono carboxylic anion of the form RCOO | 03/21/1995 |
| 5326891 | Hydrophobicized double layer hydroxide compounds Novel hydrophobicized double-layer hydroxide compounds, processes for their production by reaction of double-layer hydroxides with aliphatic mono- and/or dicarboxylic acids, and their uses as alkoxylation catalysts for compounds containing active H atoms ... | 07/05/1994 |
| 5276172 | Metal organic compounds Metal organic compounds comprising three atoms of cobalt, nickel or bismuth each linked through oxygen atoms to boron or phosphorus and comprising a combination of aliphatic and aromatic carboxylic acid residues are useful as adhesion promoters to promote... | 01/04/1994 |
| 5191100 | Chrome humates as drilling mud additives The disclosure is of the use of chrome humate derivatives to reduce the viscosity of and/or to prevent fluid loss in water-based drilling fluids. The composition is much more effective as a drilling mud thinner, and as a fluid loss control agent than the ... | 03/02/1993 |
| 5154912 | O17 isotopic peroxides The peroxides which include the O17 isotope, especially the hydrogen peroxides and peroxides and hydroperoxides prepared therefrom, are well adapted as nonradioactive labeled compounds for use in the medicinal and biological arts.... | 10/13/1992 |
| 5110963 | Method for making Mo4 S4 L6 (C-2386) The present invention is predicated on the discovery that Mo(III) containing compounds will react with salts of a 1,1-dithioacid to form Mo4 S4 L6. Accordingly, there is provided a method for preparing compounds of the for... | 05/05/1992 |
| 5110961 | Catalytic process for the synthesis of an alcohol, new metal complexes and process for the synthesis of these complexes The invention relates to a catalytic process for the synthesis of an alcohol by reaction of an epoxide with a nucleophilic compound containing a labile hydrogen, such as an alcohol, a phenol, a primary amine or a carboxylic acid. The catalyst is a metal c... | 05/05/1992 |
| 5068369 | Process for preparing chiral sulphoxides A process for preparing single enantiomers of chiral sulphoxides is provided. The process involves (a) reacting an achiral sulphur-containing compound, e.g. a disulphide, with a single enantiomer of a chiral template having the formula T-(CO)-CH2 | 11/26/1991 |
| 5039636 | Preparation of aluminum titanate from an organometallic oligomer An aluminum- and titanium-containing oligomer is prepared by a controlled hydrolysis reaction between a chelated aluminum compound and an organotitanium compound. The oligomer is heated to 800° C. in an oxygen-containing atmosphere to produce ଲ-alu... | 08/13/1991 |
| 4952713 | Bridged transition-metal complexes and uses thereof for hydrogen separation, storage and hydrogenation The present invention constitutes a class of organometallic complexes which reversibly react with hydrogen to form dihydrides and processes by which these compounds can be utilized. The class includes bimetallic complexes in which two cyclopentadienyl rin... | 08/28/1990 |
| 4855468 | Titanocenes and a radiation-polymerizable composition containing these titanocenes Titanocenes with π-cyclopentadienyl ligands, in which one or two carbocyclic or heterocyclic aromatic rings are bonded to the metal, the aromatic rings being substituted in at least one of the two ortho-positions relative to the metal-carbon bonds by CF | 08/08/1989 |
| 4832877 | Tetranuclear sulfido-bridged complex of Cr(III) having a strongly magnetic ground state Broadly stated, the present invention encompasses tetranuclear sulfide-bridged complexes of Cr(III) having bridging organo-carboxylate ligands. Indeed, in one embodiment, the present invention is directed toward a novel composition of matter having a comp... | 05/23/1989 |
| 4810402 | Solid material for producing hexagonal ferrites A solid material useful for producing hexagonal ferrites comprises a homogeneous mixture of the cations of the composition (I) and one or more anions comprising one or more thermally decomposable anions.... | 03/07/1989 |
| 4803291 | Particulate compositions of ferromagnetic metal oxalates in the form of submicronic acicular particles, the preparation of same and application thereof The disclosed particulate composition of simple or mixed oxalate of ferromagnetic metals is characterized in that it is provided in the form of needle-shaped particles having a length comprised between 0.05 and 0.5 micrometer, with a proportion higher tha... | 02/07/1989 |
| 4730064 | Heterometallic thiocubanes (C-2044) This invention relates to heterometallic thiocubane compositions containing the M21 M22 S4 cluster core and methods of making them wherein M1 is Re, V, Mo or W and M2 is Co, Cr, Cu, N... | 03/08/1988 |
| 4704377 | Metathesis of acetylenes Described are novel bimetallic complexes particularly useful as homogeneous catalysts for the metathesis of alkynes and metathesizable functionally substituted alkynes, and methods for the preparation of such complexes. The complexes are formed from (i) a... | 11/03/1987 |