U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Famous Patents

William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.

Newsletter  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.

 

Class 556/31 - Containing -C(=X)-, wherein X is chalcogen (e.g., carbonyl containing, etc.)


Subclass of Class 556 - Organic compounds -- part of the class 532-570 series
Definition: Compounds which contain a -C(=X)- group, wherein
No. of patents: 118
Last issue date: 04/03/2012


1      
NumberTitleIssue Date
8148563Chemical 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
7351770Ionic 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
7241926Method 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
6992202Single-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
6979708Hydrotalcites, 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
6359159MOCVD 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
6340768MOCVD 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
6297392Group 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
6184403MOCVD 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
6096693Zinc-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
6084033Bimetallic 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
5932190Multinuclear 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
5763370Friction-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
5683614Sol-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
5639843Organometallic 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
5627295Synthesis 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
5612082Process 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
5583243Salts 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
5559260Precursors 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
5527752Catalysts 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
5518704Nickel 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
5514822Precursors 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
5482699Multinuclear 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
5435937Fluorescent 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
5399329Hydrotalcite-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
5326891Hydrophobicized 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
5276172Metal 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
5191100Chrome 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
5154912O17 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
5110963Method 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
5110961Catalytic 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
5068369Process 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
5039636Preparation 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
4952713Bridged 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
4855468Titanocenes 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
4832877Tetranuclear 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
4810402Solid 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
4803291Particulate 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
4730064Heterometallic 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
4704377Metathesis 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
1      
 
Sign InRegister
Username  
Password   
forgot password?