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A pizza mold for forming a plurality of concentric raised ridges of dough (i.e., crust) on the surface of a pizza pie.
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| Number | Title | Issue Date |
| 7718811 | Oxidation process in fluidised bed reactor A process for reacting in a fluid bed reactor at least one oxidisable reactant with molecular oxygen in the presence of a catalytically active fluidised bed of solid particles. In the process a molecular oxygen-containing gas having an oxygen concentration greater t... | 05/18/2010 |
| RE39794 | Process for the simultaneous production of maleic anhydride and its hydrogenated derivatives A process is described for the co-production of maleic anhydride and at least one C4 compound selected from butane-1,4-diol, γ-butyrolactone, and tetrahydrofuran in which maleic anhydride is produced by partial oxidation of a hydrocarbon feedstock select... | 08/21/2007 |
| 7077995 | Method for treating aqueous systems with locally generated chlorine dioxide The present invention provides a new method for the in situ generation of chlorine dioxide from a solution of sodium chlorite and carbon dioxide. The present invention produces effective levels of chlorine dioxide without having to resort to the use of hydrochloric ... | 07/18/2006 |
| 6989454 | Method for producing maleic anhydride A process for preparing maleic anhydride by heterogeneously catalyzed gas-phase oxidation of an n-butene-containing hydrocarbon stream by means of oxygen-containing gases in a shell-and-tube reactor having two successive reaction zones, where the first, feed-side re... | 01/24/2006 |
| 6960670 | Method for production of maleic anhydride This invention discloses a method for producing maleic anhydride comprising an azeotropic distillation step to dehydrate a crude maleic acid-containing aqueous solution, which method is characterized by as an azeotropic solvent (1) using an organic solvent exhibitin... | 11/01/2005 |
| 6956004 | Vanadium/phosphorus mixed oxide catalyst Active vanadium/phosphorus mixed oxide catalyst for the conversion of non-aromatic hydrocarbons, e.g., n-butane, into maleic anhydride. The catalyst is prepared from the catalyst precursor, that is, prepared by the reaction of a source of vanadium in an organic medi... | 10/18/2005 |
| 6933417 | Process for vinyl chloride manufacture from ethane and ethylene with partial CHl recovery from reactor effluent A process for producing vinyl chloride monomer from ethylene and ethane having input of significant quantities of both ethane and ethylene in input streams to the affiliated reactor where hydrogen chloride in the reactor effluent is only partially recovered from the... | 08/23/2005 |
| 6921830 | Method for purifying an organic solvent for the purposes of absorption of maleic acid anhydride In a process for purifying an organic solvent for the absorption of maleic anhydride from a gaseous mixture, in which the maleic anhydride is separated off from the solvent, a substream is taken from the solvent stream, this substream is distilled and returned to th... | 07/26/2005 |
| 6909024 | Process for the conversion of ethylene to vinyl chloride and novel catalyst compositions useful for such process This invention is a process for producing vinyl chloride from an ethylene-containing feed, oxygen, and a chlorine source in the presence of a catalyst. The process permits direct production of vinyl chloride in a single reactor system, and further permits ethane to ... | 06/21/2005 |
| 6903047 | Vanadium-phosphorus oxide catalysts with promoter reagents The present invention concerns a method for enhancing the activity of vanadium phosphorus oxide (VPO) catalysts. Promoter reagents are grafted onto or reacted with the catalyst surface. An optional calcination and activation heating cycle transforms the catalyst pre... | 06/07/2005 |
| 6657097 | Fluidized bed reactor Disclosed is a fluidized bed reactor wherein the average cross-sectional area occupied by a cooling coil, a dummy pipe and/or a cyclone leg is 10% or more of the average cross-sectional area of said reactor in a dense-phase fluidized catalyst bed region. ... | 12/02/2003 |
| 6652823 | Process for the synthesis of VPO catalysts Process for the preparation of a vanadium phosphate catalyst comprising treatment of a vanadium compound with formic acid, water and a phosphorus compound.... | 11/25/2003 |
| 6602476 | Apparatus and process for heat exchange with fluid beds Apparatus and process for heat exchange with fluid beds comprises heat-exchange tubes located longitudinally with respect to the axis of a fluidization zone with a rectangular pitch, one side of which having a length at least one and a half times the leng... | 08/05/2003 |
| 6593495 | Anhydride stabilization Disclosed herein are compositions comprising organic anhydrides having a reduced tendency to discolor with time, even when held at elevated temperatures for extended times. The compositions are produced by mixing at least one acid halide and various deriv... | 07/15/2003 |
| 6590071 | Reversible aqueous pH sensitive lipidizing reagents, compositions and methods of use The present invention provides lipidized conjugates comprising an amino group-containing biologically active substance and a lipophilic group capable of penetrating a biological membrane. Under neutral or mildly acidic conditions, including those found in... | 07/08/2003 |
| 6344568 | Catalyst for gas phase partial oxidation This invention relates to a method for producing a partially oxidized organic compound, e.g., an unsaturated aldehyde/carboxylic acid having three or more carbon atoms, or an organic acid anhydride/nitrile compound having four or more carbon atoms. This m... | 02/05/2002 |
| 6329532 | Method for separating maleic anhydride from maleic anhydride-containing mixtures by stripping The invention relates to a process for the separation of maleic anhydride from the maleic anhydride-containing reactor offgases from the preparation of maleic anhydride by the oxidation of hydrocarbons, in which this gas stream is brought into contact wit... | 12/11/2001 |
| 6093835 | Process for producing maleic anhydride A process for producing maleic anhydride is described, which comprises (i) reacting a hydrocarbon with oxygen in a vapor phase in the presence of a catalyst to yield a reaction mixture gas containing maleic anhydride, (ii) bringing the reaction mixture ga... | 07/25/2000 |
| 6090245 | Process for the purification of maleic anhydride Processes for the purification and color stabilization of crude maleic anhydride by distillation in a batch or continuous distillation column.... | 07/18/2000 |
| 6040460 | High productivity process to produce maleic anhydride from n-butane In producing maleic anhydride by catalytic oxidation of n-butane in vapor phase using oxygen or enriched air as oxidation medium, the reaction mixture consists of butane, oxygen and a recycling exhaust gas recovered from the absorption stage by a solvent ... | 03/21/2000 |
| 6018057 | Process for producing acid anhydrides A process for producing anhydrides by passing a solution of the acid, preferably an organic polyacid, which is to undergo anhydridation over an acidified clay and a process for producing the catalysts therefor.... | 01/25/2000 |
| 5973166 | Method for the preparation of maleimides In accordance with the present invention, there are provided improved methods for the preparation of maleimide monomers. This new method for the synthesis of maleimides is clearly superior to those documented in the prior art. Furthermore, the invention m... | 10/26/1999 |
| 5972174 | Process for the purification of maleic anhydride Processes for the purification and color stabilization of crude maleic anhydride by distillation in a batch or continuous distillation column.... | 10/26/1999 |
| 5942628 | Method for the preparation of sulfo-N-hydroxy succinimade salts The salt of a sulfonated succinic acid is cyclized, then converted to novel sulfonated hydroxamic acids by reaction with hydroxylamine (which is added or formed in situ), and the novel hydroxamic acid is then cyclized to the sulfo-N-hydroxysuccinimide sal... | 08/24/1999 |
| 5929255 | Process for coproducing fumaric acid and maleic anhydride The present invention provides a process for recovering fumaric acid formed as a by-product during the production of maleic anhydride so that both fumaric acid and maleic anhydride are obtained. The process of the present invention further eliminates the ... | 07/27/1999 |
| 5892057 | Preparation of sulfo-N-hydroxysuccinimide salts The salt of a sulfonated succinic acid is cyclized, then converted to novel sulfonated hydroxamic acids by reaction with hydroxylamine (which is added or formed in situ), and the novel hydroxamic acid is then cyclized to the sulfo-N-hydroxysuccinimide sal... | 04/06/1999 |
| 5731443 | Liquid phthalic anhydride recovery process using a rectification tower A process for recovering phthalic anhydride as a liquid from a vapor phase oxidation product which comprises mixing the vapor phase oxidation product having a temperature in the range of about 130° C. or greater with a first stream comprising maleic anhy... | 03/24/1998 |
| 5688970 | Process to recycle exhaust gases from n-butane conversion into maleic anhydride In producing maleic anhydride by catalytic oxidation of butane in vapor phase, the reaction mixture consists of butane and a recycle gaseous current made of compressed air and exhaust gas recovered from the absorption stage by a solvent of the maleic anhy... | 11/18/1997 |
| 5670659 | Preparation of citraconic anhydride Citraconic anhydride is prepared in a single step by heating itaconic acid, optionally in an inert organic solvent medium, in the presence of a catalytically effective amount of an at least partially organic acid/base catalyst compound having a pKa rangin... | 09/23/1997 |
| 5670660 | Process for collecting airborne anhydrides An apparatus and process for the recovery of airborne anhydrides such as anhydride vapor or dust wherein these airborne anhydrides are contacted with hot glycol, such as diethylene glycol, in the liquid phase to first dissolve and then react with the airb... | 09/23/1997 |
| 5631387 | Process for the preparation and recovery of maleic anhydride An improved process for the preparation and recovery of maleic anhydride in which the recovery of maleic anhydride from a gaseous reaction mixture includes absorbing the maleic anhydride in a solvent and subsequently stripping maleic anhydride from the so... | 05/20/1997 |
| 5591870 | Process for producing a vanadium-phosphorus oxide catalyst precursor A process for producing a vanadium-phosphorus oxide-containing catalyst precursor, which comprises (a) introducing into an organic solvent a vanadium alkoxide as a pentavalent vanadium compound and a phosphorus compound in the presence of a reducing agent... | 01/07/1997 |
| 5585502 | Process and plant for the purification of raw maleic anhydride recovered from gaseous reaction mixtures In the purification of maleic anhydride obtained with an oxidation process, by means of absorption with an organic solvent and fractionation of the resulting liquid phase and purification of the crude maleic anhydride thus separated, the above purificatio... | 12/17/1996 |
| 5532384 | Process for producing hydrocarbon partial oxidation products Hydrocarbon derivatives are produced by contacting a hydrocarbon with oxygen obtained from an air separation unit in the presence of a partial oxidation reaction catalyst. After separation of the hydrocarbon derivative from the reactor effluent, unreacted... | 07/02/1996 |
| 5530144 | Process for producing a phosphorus-vanadium oxide catalyst precursor, process for producing a phosphorus-vanadium oxide catalyst, and process for producing maleic anhydride by vapor phase oxidation using the catalyst A process for producing a precursor of a phosphorus-vanadium oxide catalyst for production of maleic anhydride by vapor phase oxidation of a hydrocarbon having 4 carbon atoms, which comprises reacting phosphoric acid and a pentavalent vanadium compound in... | 06/25/1996 |
| 5520891 | Cross-flow, fixed-bed catalytic reactor Disclosed are a fixed-bed, cross-flow catalytic reactor wherein reaction heat can be exchanged against a heat exchange medium circulating indirectly through the catalyst bed, and a catalytic process comprising operation of the cross-flow reactor. The reac... | 05/28/1996 |
| 5496787 | Process for producing a vanadium-phosphorus oxide catalyst precursor A process for producing a vanadium-phosphorus oxide-containing catalyst precursor, which comprises (a) introducing into an organic solvent a vanadium alkoxide as a pentavalent vanadium compound and a phosphorus compound in the presence of a reducing agent... | 03/05/1996 |
| 5449792 | Method for the production of maleic anhydride A method for the production of maleic anhydride in which a hydrocarbon of 4 to 6 carbon atoms is subjected to a vapor phase catalytic oxidation reaction in the presence of a metal oxide catalyst, characterized in that the metal oxide catalyst includes a m... | 09/12/1995 |
| 5430181 | Process for improving a controlled oxidation reaction Process for improving a controlled oxidation reaction between at least one reactant and oxygen, in which at least one reactant is reacted with oxygen or an oxygen containing gas, constituting a reaction mixture, in the presence of at least one additional ... | 07/04/1995 |
| 5386038 | Water treatment agent Unsaturated compounds which can be dissolved in aqueous based solvents, such as ethylenic or acetylenic carboxylate or alcohols with less than 10 carbon atoms, especially maleic and/or acrylic acid or propargyl alcohol, are reacted with alkali metal phosp... | 01/31/1995 |
