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Patent No. 5307162

Cloaking System Using Optoelectronically Controlled Camouflage

A Cloaking System designed to operate in the visible light spectrum, utilizes optoelectronics and/or photonic components to conceal an object within it.

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Class 568/650 - Hydroxy bonded directly to the benzene ring (H of -OH may be replaced by a Group IA or IIA light metal)


Subclass of Class 568 - Organic compounds -- part of the class 532-570 series
Definition: Compounds which contain a hydroxy group bonded directly
No. of patents: 109
Last issue date: 06/12/2007


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NumberTitleIssue Date
7230141Method for producing toluol derivatives
A process for preparing toluene derivatives of the formula I, where R1, R2 and R3 independently of one another are hydrogen, halogen, C1–C6-alkyl, hydroxyl...
06/12/2007
7208639Method of producing reduced coenzyme Qas oily product
The present invention provides a method for obtaining reduced coenzyme Q10 which is useful as an ingredient in foods, functional nutritive foods, specific health foods, nutritional supplements, nutrients, drinks, feeds, cosmetics, medicines, remedies, pre...
04/24/2007
7195719High polarization ferroelectric liquid crystal compositions
The invention relates to chiral nonracemic liquid crystal compounds having achiral tails comprising a perfluoroalkyl terminal portion which are useful as components in liquid crystal to impart high polarization to the mixture. The materials of this invention can be ...
03/27/2007
7183444Method for producing anis alcohol
The present invention relates to a method for the preparation of anisalcohol (methoxybenzyl alcohol) by hydrogenation of anisaldehyde (methoxybenzaldehyde) in the presence of Raney nickel and a basic additive, the use of the anisalcohol and hygiene or care products ...
02/27/2007
7083832Partially fluorinated liquid crystal material
The invention provides LC compositions that exhibit V-shaped switching when aligned in an analog device configuration and exhibit bistability when aligned in a bookshelf-type device configuration. The invention more specifically provides LC compositions of formula 1...
08/01/2006
6852895Practical, cost-effective synthesis of CoQ10
The present invention provides a convergent method for the synthesis of ubiquinones and ubiquinone analogues. Also provided are precursors of ubiquinones and their analogues that are useful in the methods of the invention. ...
02/08/2005
6828466Process for the synthesis of phenols from arenes
A process to synthesize substituted phenols such as those of the general formula RR′R″Ar(OH) wherein R, R′, and R″ are each independently hydrogen or any group which does not interfere in the process for synthesizing the substituted phenol including, but not...
12/07/2004
6794547Process for the synthesis of aryl alkyl monoethers
The invention relates to a process for the synthesis of aryl alkyl monoethers by reaction of a phenol compound, comprising one or more hydroxyl groups attached to the aromatic system, and of a dialkyl carbonate. It is a solvent-free process carried out at a pressure...
09/21/2004
6624334Method for production of aryl alkyl ethers
Aryl alkyl ethers can be produced by the reaction of hydroxyaromatics with an alcohol in the presence of a catalyst. This process achieves higher yields of aryl alkyl ethers and the formation of ring-alkylated products and dialkyl ethers is markedly reduc...
09/23/2003
6541673Process for oxyalkylating phenolic compounds
Phenolic polyether polyols are prepared by a two stage oxyalkylation process, a first stage performed at a high oxyalkylation temperature and a second stage at a lower oxyalkylation temperature. Despite the use of high temperature during oxyalkylation, po...
04/01/2003
6512147Apparatus and process for generating mixed multi-component vapor
A mixed liquid of two or more components different in boiling temperature from each other and soluble in or compatible with each other is evaporated into a mixed vapor having a similar composition to that of the mixed liquid by using an apparatus having a...
01/28/2003
6274635Alkylated resorcinol derivatives for the treatment of immune diseases
The present invention provides a method, compounds, and compositions for treating a disease associated with immune dysfunction. In accordance with the method, a pharmacologically-acceptable composition including at least one compound selected from the gro...
08/14/2001
6271423Preparation of butenyl ethers
A process for preparing butenyl ethers of the formula I CH3 --CH.dbd.CH--CH2 --OR I by reacting butadiene or butadiene-containing hydrocarbon streams with alcohols of the formula II ROH II at elevated temperature and superatmospheric pressur...
08/07/2001
6133279Therapeutic agents for renal diseases and organ preservatives
Herein disclosed are therapeutic agents for renal diseases and organ preservatives containing a compound represented by the general formula (1): ##STR1## wherein X represents an oxygen atom or a group represented by the general formula (2): ...
10/17/2000
6068834Skin lightening compositions
This invention relates to compositions, compounds and methods for lightening skin, using active compounds having the structure: ##STR1## wherein: (i) each X is, independently, selected from the group consisting of halo, alkyl, substituted alkyl, aryl...
05/30/2000
5886238Alkene precursors for preparing chemiluminescent dialkyl-substituted 1,2-dioxetane compounds
Alkene precursors for preparing dialkyl-substituted dioxetanes. The dioxetanes are useful for the detection of triggering agents including enzymes....
03/23/1999
5755994Ester derivative, liquid crystal composition and liquid crystal display element
A novel liquid crystalline compound having a large dielectric anisotropy value, a small change in the threshold voltage depending upon temperatures, and an improved solubility in other liquid crystal materials at low temperatures, and a liquid crystal com...
05/26/1998
5709720Aromatic ethers of polyalkylphenoxyalkanols and fuel compositions containing the same
Aromatic ethers of polyalkylphenoxyalkanols having the formula: ##STR1## or a fuel soluble salt thereof, wherein R is hydroxy, nitro or --(CH2)x -NR5 R6, wherein R5 and R6 are independ...
01/20/1998
5693807Substituted hydroquinone derivatives
The invention relates to substituted hydroquinone derivatives of the general formula I ##STR1## wherein R4 is lower alkyl and either R1 is hydroxy, halogen, a group of the formula --P(=O)(R5)R6 (Ia), a grou...
12/02/1997
5675042Selective 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 crystalline tin or cerium phosphate catalyst in a solvent containing an aliphatic carboxylic acid. The pro...
10/07/1997
55741784,6-Di-t-butyl-dihydrobenzofuran-5-ol and its derivatives
Compounds represented by the general formula as well as intermediates for the synthesis of thereof: ##STR1## where R1 is a hydrogen atom or an acyl group; R2 is a lower alkyl group; R3 is a hydrogen atom or a lower al...
11/12/1996
5536882Preparation of polyether glycols and alcohols by the polymerization 3,4-epoxy-1-butene
Disclosed are novel polyether compounds obtained by the reaction or polymerization of 3,4-epoxy-1-butene in the presence of an acidic catalyst and a nucleophilic initiator compound. The polyether compounds comprise n units of residue (1) and m units of re...
07/16/1996
5446210Process for the production of polyol ethers
A process for the production of polyol ethers comprising the steps of A) reacting a mixture of at least one polyol and at least one carbonyl compound of the formula R1 --CO--R2 (I) in which R1 a...
08/29/1995
5434314Polyether glycols and alcohols derived from 3,4-epoxy-1-butene
Disclosed are novel polyether compounds obtained by the reaction or polymerization of 3,4-epoxy-1-butene in the presence of an acidic catalyst and a nucleophilic initiator compound. The polyether compounds comprise n units of residue (1) and m units of re...
07/18/1995
5416242Hydroquinone derivative
Novel hydroquinone derivatives of the formulae (I) and (II), ##STR1## wherein R1 is an alkyl group having 7 to 11 carbon atoms, ##STR2## wherein each of R2 to R5 is independently a hydrogen atom, a lower alkyl gr...
05/16/1995
5414148Preparation of p-nitrophenolic compounds
p-Nitrophenolic compounds, e.g., p-nitrophenol itself, are selectively prepared by (a) reacting a phenolic compound with a nitrosating agent in the presence of sulfuric acid, the concentration of which H2 SO4 being at least 60%, (b) ...
05/09/1995
5414153Hydroxylation of phenolic compounds
Phenolic compounds, e.g., the phenols and phenol ethers, are selectively hydroxylated whereby the amounts of the final product para isomer are enhanced, for example in favor of hydroquinone versus pyrocatechol in the event of the hydroxylation of phenol, ...
05/09/1995
5393776Tocotrienol analogs in the treatment of hypercholesterolemia and hyperlipidemia
This invention relates to structurally novel acyclic tocotrienol analogs, which are useful for cholesterol/lipid lowering in cases of hypercholesterolemia and hyperlipidemia, and for atherosclerosis. Also provided are pharmaceutical compositions and a met...
02/28/1995
5387718Method of manufacturing alkylphenyl alkyl ethers or alkylphenyl alkyl thioethers
Alkylphenyl alkyl ethers or alkylphenyl alkyl thioethers, of the formula ##STR1## where U represents O or S; and R1 -R6 each independently represent an alkyl or aryl group with 1-6 C atoms, but R1 -R5 may e...
02/07/1995
5319148Preparation of pyrocatechol monoethers and pyrocatechols
The preparation of pyrocatechol monoethers or pyrocatechols of the formula Ia or Ib respectively ##STR1## ( R1 and R2 =H or C1 --C8 -hydrocarbon radicals; R3 =C1 --C8 -hydro...
06/07/1994
5254747Fluorine-containing chiral smectic liquid crystals
Compounds are provided which comprise a fluorocarbon terminal portion and a chiral hydrocarbon terminal portion, said terminal portions being connected by a central core, said compounds having tilted smectic mesophases or having latent tilted smectic meso...
10/19/1993
5248835Method of producing a monoalkylether of a dihydric phenol compound
A monoalkylether of a dihydric phenol compound is produced at a high conversion and selectivity by catalytically dehydration reacting a dihydric phenol compound with a lower monohydric alcohol in the presence of a catalyst comprising at least one inorgani...
09/28/1993
5245089Alkylation reactions catalyzed by gallium-modified titanium dioxide
Provided is a process for alkylating aromatic compounds in the presence of mixed oxides of titanium and gallium which have been found to be highly active catalysts for the alkylation of aromatics with alkyl esters, alcohols, olefins and ethers. When the a...
09/14/1993
5233097Oxidation 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
5189225Process for catalytically producing monoalkylether of dihydric phenol compound
A monoalkylether of dihydric phenol compound is produced by bringing a feed gas comprising a mixture gas of a dihydric phenol compound with a monohydric alcohol compound into contact with an active catalyst component comprising at least one member selecte...
02/23/1993
5149888Hydroxylation of phenols/phenol ethers
The phenols and phenol ethers, e.g., phenol itself, are effectively hydroxylated by reacting hydrogen peroxide therewith, in the presence of a catalytically effective amount of titanium dioxide....
09/22/1992
5146010Pyrolysis of naturally occurring cresylic acid mixtures
A process for removing guaiacols from naturally-occurring cresylic acid mixtures by pyrolysis is described....
09/08/1992
5082978Selective monomethylation of phenolic compounds
Mono-, di- and triphenols are selectively monomethylated by reaction with para-dimethoxybenzene in the presence of a catalytically effective amount of an acid catalyst....
01/21/1992
5025095Substituted diallylphenol derivatives as reactive diluents for bismaleimides
Substituted diallylphenol derivatives are useful as reactive diluents for bismaleimides. Formulations comprising bismaleimides and substituted diallylphenol derivatives are particularly useful in resin transfer molding and filament winding techniques....
06/18/1991
4973764Alkylphenols and derivatives thereof via phenol alkylation by cracked petroleum distillates
There are disclosed novel compositions of matter comprising monoalkylphenols prepared by selectively alkylating the olefin component of a thermally cracked sulfur-containing petroleum distillate derived from residua. The monoalkylphenols have certain orth...
11/27/1990
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