Celebrity Inventors
Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
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 |
| 7626060 | Process for the preparation of phenolic compounds, for separating phenol from cleavage product mixtures, and an apparatus To improve energy efficiency of prior art processes while preserving the standards of quality and total yield of desired end products, a process for the preparation of phenolic compounds is proposed. The process of the invention comprises working-up of the cleavage ... | 12/01/2009 |
| 6900358 | Process for catalytic hydroxylation of benzene A process for hydroxylating benzene under catalytic distillation conditions to produce hydroxylated products such as phenol is provided. The process provides for direct hydroxylation of liquid phase benzene with an oxidant and a zeolite catalyst under conditions eff... | 05/31/2005 |
| 6576798 | Method and system for purifying cumene hydroperoxide cleavage products A system for purifying a cumene hydroperoxide cleavage product mixture comprises a cumene hydroperoxide cleavage product mixture feed containing impurities in fluid communication with an aqueous alkaline solution feed; the cumene hydroperoxide cleavage pr... | 06/10/2003 |
| 6573408 | System and method for purifying cumene hydroperoxide cleavage products A system for purifying a cumene hydroperoxide cleavage product mixture comprises a cumene hydroperoxide cleavage product mixture feed containing impurities in fluid communication with an aqueous alkaline solution feed; the cumene hydroperoxide cleavage pr... | 06/03/2003 |
| 6482989 | Method for oxidizing alkanes and cycloalkanes with aldehydes in the presence of copper-based catalysts and nitrogen-containing compounds A method for oxidizing an alkane, comprising the step of oxidizing said alkane with oxygen in the presence of an aldehyde, a copper-based catalyst and a nitrogen-containing compound. This method may be used to convert alkanes to corresponding alcohols and... | 11/19/2002 |
| 6479711 | Process for producing aromatic hydroxy compound A process for producing an aromatic hydroxy compound having hydroxyl group at the para-position with respect to a hydroxy or an alkoxy substituent group present in the aromatic ring at a high yield and at a high selectivity, using a novel and useful hydro... | 11/12/2002 |
| 6441252 | Apparatus for producing phenol using reactive distillation An apparatus for producing phenol and acetone from cumene hydroperoxide comprises a reactive distillation column comprising at its upper portion a distillation column and at its lower portion a catalyst bed.... | 08/27/2002 |
| 6441251 | Production of phenol A process for producing phenol and acetone from cumene hydroperoxide is described in which the cumene hydroperoxide is contacted with a solid-acid catalyst comprising an inorganic, porous, crystalline material, designated as M41S, exhibiting, after calcin... | 08/27/2002 |
| 6410804 | Production of phenol using reactive distillation A process for producing phenol and acetone from cumene hydroperoxide comprises: i) introducing a cumene hydroperoxide feed into a reactive distillation column comprising at its upper portion a distillation column and at its lower portion a catalyst bed, a... | 06/25/2002 |
| 6365762 | Method for catalytic and selective oxidation of aromatic compounds The invention relates to the use of compounds of the formula R1a Reb Oc.L.sub.d (I), in which ##STR1## and the total of a, b and c is such as to comply with the pentavalency or heptavalency of rhenium, with the prov... | 04/02/2002 |
| 6350921 | Process for the production of a dihydroxybenzene and dicarbinol from diisopropylbenzene Improved methods for the simultaneous production of dihydroxybenzene and dicarbinol from diisopropylbenzene are provided. These methods provide for continuous and simultaneous production of diisopropylbenzene dihydroperoxide (DHP) and diisopropylbenzene h... | 02/26/2002 |
| 6297406 | Production of phenol A process for producing phenol and acetone from cumene hydroperoxide is described in which the cumene hydroperoxide is contacted with a solid-acid catalyst comprising a mixed oxide of cerium and a Group IVB metal.... | 10/02/2001 |
| 6169215 | Production of phenol A process for producing phenol and acetone from cumene hydroperoxide is described in which the cumene hydroperoxide is contacted with a solid-acid catalyst produced by calcining a source of a Group IVB metal oxide with a source of an oxyanion of a Group V... | 01/02/2001 |
| 6169216 | Production of phenol A process for producing phenol and acetone from cumene hydroperoxide is described in which the cumene hydroperoxide is contacted with a solid-acid catalyst comprising a sulfated transition metal oxide, preferably sulfated zirconia.... | 01/02/2001 |
| 6107527 | Process for the production of hydroxy-aromatic substances The process for the production of hydroxy aromatic substances by means of catalytic oxidation of isoalkyl aromatic substance with oxygen, and decomposition of the hydroperoxide thus formed, is based on the concept that isoalkylaromatic substances are emul... | 08/22/2000 |
| 5962752 | Leached alumina vanadyl catalysts for hydroxylation of aromatics using molecular oxygen as the terminal oxidant without coreductant A process is disclosed for the catalytic hydroxylation of aromatic hydrocarbons which comprises contacting aromatic feedstock with oxidant comprising molecular oxygen, under suitable reaction conditions, in the presence of a catalyst comprising vanadyl (V... | 10/05/1999 |
| 5932773 | Process for the preparation of and ଲ napthol by hydroxylation of naphthalene using organotransition metal complex This invention relates to a process for the hydroxylation of napthalene to .varies. and ଲ naphthols which comprises reacting napthalene with hydrogen peroxide in the presence of a solid catalyst containing an organotransition metal complex wherein s... | 08/03/1999 |
| 5811599 | Process for the selective oxidation of hydrocarbons and their derivatives A process for the oxidation of hydrocarbons and their derivatives having the general formula RX, wherein R is from n-alkyl, iso-alkyl, benzyl, cyclohexyl, mono, di or tricyclic aryl, or alkenic groups and X is selected from H, OH or Cl to compounds having... | 09/22/1998 |
| 5670465 | Preparation of p-fuchsones and synthesis of p-dihydroxylated aromatic compounds therefrom p-Dihydroxylated aromatic compounds are prepared via the oxidation of p-fuchsones, the latter advantageously being synthesized by reacting a phenolic compound having at least one hydrogen atom in the para-position to the hydroxyl function with a non-enoli... | 09/23/1997 |
| 5510543 | Removal and neutralization of acid catalyst from products of cumene hydroperoxide cleavage The present invention is an improved method for the recovery of phenol from a cleavage mass resulting from the sulfuric acid cleavage of cumene hydroperoxide comprising neutralizing the cleavage mass, forming an aqueous phase and an organic phase, separat... | 04/23/1996 |
| 5504260 | Catalytic oxidation Organic compounds are selectively oxidized by means of a particularly advantageous process, using elemental oxygen and a catalyst containing palladium and copper and carrying out the process in the presence of carbon monoxide.... | 04/02/1996 |
| 5475157 | Process for producing aromatic hydroxylic compound There is disclosed a process for producing an aromatic hydroxylic compound by acid decomposition of a hydroperoxide having the general formula (I) ##STR1## wherein Ar represents an aromatic hydrocarbon group having a valence of n; and n represents an... | 12/12/1995 |
| 5430200 | Process for producing phenol from cumene The present invention provides in a particular embodiment an improvement in the process for producing phenol by the acid-catalyzed cleavage of cumene hydroperoxide (CHP). The reactant stream fed to the cleavage reactor also includes the contaminant by-pro... | 07/04/1995 |
| 5426244 | Method for preparing dihydric phenols Phenols are reacted with a hydrogen peroxide in the presence of a crystalline titanosilicate catalyst and a cyclic ether, such as dioxane, as a solvent. The method provides especially high para-selectivity compared with conventional methods, and, at the s... | 06/20/1995 |
| 5414155 | Preparation of o-dihydroxylated aromatic compounds via oxidation of o-fuchsones o-Dihydroxylated aromatic compounds, for example pyrocatechol, are selectively prepared by reacting an o-fuchsone with an oxidizing agent, for example hydrogen peroxide, optionally in the presence of a catalytically effective amount of an acid catalyst.... | 05/09/1995 |
| 5414154 | Phenol with low levels of methylbenzofuran A process for the reduction of methylbenzofuran (MBF) impurities in phenol obtained from the decomposition product of cumene hydroperoxide requires treating the phenol to reduce the level of acetol, contacting the phenol containing a low level of acetol w... | 05/09/1995 |
| 5387724 | Selective hydroxylation of phenol or phenolic ethers Phenols, and related aromatic compounds, phenolic ethers, can be hydroxylated selectively using hydrogen peroxide in the presence of an amorphous or microcrystalline zirconium phosphate catalyst in a solvent containing an aliphatic carboxylic acid. The pr... | 02/07/1995 |
| 5371305 | Process for producing phenol from cumene The present invention provides in a particular embodiment an improvement in the process for producing phenol by the acid-catalyzed cleavage of cumene hydroperoxide (CHP). The reactant stream fed to the cleavage reactor also includes the contaminant by-pro... | 12/06/1994 |
| 5364983 | Process for the preparation of aromatic polyhydroxy compounds The present invention relates to a process for the preparation of aromatic polyhydroxy compounds, by reacting an aromatic hydroxyaldehyde with hydrogen peroxide, with or without the addition of a base, in the presence of a nitrile R--CN, in which R is an ... | 11/15/1994 |
| 5364982 | Catalytic hydroxylation of phenol Hydroxylation of phenol is prone to the production of tarry by-products. Selective hydroxylation of phenol can be obtained by reacting a limited amount of hydrogen peroxide with phenol in solution in a compatible organic solvent and in the presence of a c... | 11/15/1994 |
| 5331103 | Process for monohydroxylation of phenolic compounds The present invention relates to a process for monohydroxylation of phenolic compounds which allows an increase in the amount of para isomer. The invention relates to a process for monohydroxylation of a phenolic compound having a hydrogen atom in the para pos... | 07/19/1994 |
| 5292959 | 4,4-dinitroadamantange-2,6-dione 4,4-Dinitroadamantane-2,6-dione,6, and a method of making the same.... | 03/08/1994 |
| 5276216 | Process for oxidizing aromatic and aliphatic compounds Process for oxidizing aromatic and aliphatic compounds, by using, in aqueous solution, an enzymatic system constituted by hydrogen, peroxide as the oxidizer compound, peroxidase and activated oxygen, or an enzyme which releases activated oxygen from H | 01/04/1994 |
| 5233097 | Oxidation of aromatics to hydroxyaromatics using aluminosilicates containing framework titanium Certain crystalline titanoaluminosilicate molecular sieve compositions having titanium, aluminum, and silicon present as framework tetrahedral oxide units are particularly effective in hydroxylating the aromatic nucleus of aromatic compounds using hydroge... | 08/03/1993 |
| 5160497 | Phenol production process Phenol production process wherein: 1) benzene is reacted with propene and isopropylic alcohol by contacting a catalyst based on a dealuminized Y zeolite with a SiO2 /Al2 O3 molar ratio ranging from 8 to 70, then the obtained pr... | 11/03/1992 |
| 5110995 | Preparation of phenol or phenol derivatives The invention relates to a process for the production of phenol or phenol derivatives by oxidation of the aromatic nucleus of benzene or benzene derivatives with nitrous oxide over a zeolite catalyst.... | 05/05/1992 |
| 5097078 | Catalytic hydroxylation of phenols/phenol ethers The phenols and phenol ethers are hydroxylated by reacting such phenols/phenol ethers with hydrogen peroxide, in the presence of (a) a catalytically effective amount of an alkali metal or alkaline earth metal salt of at least one protonic acid having a pK... | 03/17/1992 |
| 5017729 | Phenol preparation process and propylene recovery therefrom Phenol is produced in a recycle manner by (a) reacting benzene with propylene to synthesize cumene, (b) oxidizing the cumene of step (a) into cumene hydroperoxide, (c) acid cleaving cumene hydroperoxide into phenol and acetone, (d) hydrogenating the aceto... | 05/21/1991 |
| 5003114 | Hydroxylation of phenols/phenol ethers Phenols/phenol ethers are hydroxylated by reaction with hydrogen peroxide in the presence of a catalytically effective amount of a calcined germanozeosilite MFI zeolite.... | 03/26/1991 |
| 4992600 | Process for the oxidation of benzene to phenol The instant invention relates to a process for the oxidation of benzene to phenol which comprises contacting benzene and molecular oxygen with a dihydrodihydroxyanthracene-sulfonate salt dissolved in water, optionally in the presence of an oxidation catal... | 02/12/1991 |
