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Class Information
Number: 568/747
Name: Organic compounds -- part of the class 532-570 series > Organic compounds (class 532, subclass 1) > Oxygen containing (e.g., perchlorylbenzene, etc.) > Hydroxy containing (h of -oh may be replaced by a group ia or iia light metal) > Benzene ring containing > Phenols (h of -oh may be replaced by a group ia or iia light metal) > Additional ring containing > The additional ring is six-membered > The additional ring is benzene > Rings bonded directly to each other
Description: Compounds wherein two rings are bonded directly to each other.










Sub-classes under this class:

Class Number Class Name Patents
568/748 Purification or recovery 21


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8507724 Compounds for use in the treatment of pain Aug. 13, 2013
8212084 Method for the production of 4,4'-[1-trifluoromethyl)alkylidene]-bis-(2,6-diphenylphenols) Jul. 3, 2012
8211454 Paper product with disinfecting properties Jul. 3, 2012
8128950 Paper product with disinfecting properties Mar. 6, 2012
7638657 Preparation of 3-[5'-(3,4-bis(hydroxymethyl)benzyloxy)-2'-ethyl-2-propylbiphenyl-4-yl]pe- ntan-3-ol Dec. 29, 2009
6753451 Process for the preparation of phenylphenol compounds Jun. 22, 2004
6391925 Liquid phenolic composition May. 21, 2002
5969147 Substituted biphenyloxazolines Oct. 19, 1999
5847234 Process for the preparation of 4-hydroxybiphenyl Dec. 8, 1998
5304689 Stabilization of color in production of paracumylphenol using hypophosphorous acid Apr. 19, 1994
5248840 Process for the preparation of hydrooxydiphenyls Sep. 28, 1993
5245086 Hydroxylation of phenols/phenol ethers Sep. 14, 1993
5235116 Process for the preparation of 2-(1-phenylethyl)hydroquinone and 2-(1-phenylethyl)hydroquinone diacetate Aug. 10, 1993
5210330 Process for the preparation of phenylhydroquinone May. 11, 1993
5196605 Process for the preparation of pure 4,4'-dihydroxybiphenyl Mar. 23, 1993
5185475 Process for preparing paracumylphenol Feb. 9, 1993
5177258 Method of production of biaryl derivatives Jan. 5, 1993
5159082 Process for producing aromatic compound Oct. 27, 1992
5149888 Hydroxylation of phenols/phenol ethers Sep. 22, 1992
5146025 Naphthalene compounds Sep. 8, 1992
5105029 Process for recovering a lower alcohol from a catechol-lower alcohol reaction product solution Apr. 14, 1992
5093514 Base-catalyzed dehydration of substituted cis-1,2-dihydroxycyclohexa-3,5-dienes Mar. 3, 1992
5059345 Optically active compound and chiral liquid crystal composition containing the same Oct. 22, 1991
5041692 Process for alkylation of phenols Aug. 20, 1991
4960957 Preparation of phenylhydroquinone Oct. 2, 1990
4871470 Cyclohexane derivatives Oct. 3, 1989
4798911 Catalyst composition and method for selective dehydrogenation Jan. 17, 1989
4729977 Supported catalyst, process for its preparation and its use for the preparation of hydroxydiphenyl Mar. 8, 1988
4670581 Biphenyl compounds and process for producing the same Jun. 2, 1987
4590301 Polymerization inhibitors May. 20, 1986
4551562 Process for the production of dihydroxybenzenes Nov. 5, 1985
4537996 Hydroxybiphenyl compounds Aug. 27, 1985
4360469 Preparation of quinones by salcomine-catalyzed oxidation of phenols Nov. 23, 1982
4258268 Polycyclic phenols, alcohols and ketones from phenols, cyclic alcohols and cyclic ketones using a nickel oxide/manganese oxide/magnesium oxide catalyst in presence of at least one of hydrogen Mar. 24, 1981
4219501 Anti-inflammatory method Aug. 26, 1980
4174460 Process for the hydroxylation of phenols and phenol ethers in the nucleus Nov. 13, 1979
4157449 Ethynylbenzene compounds and derivatives thereof Jun. 5, 1979
4147726 Acid-catalyzed hydrolysis of organic hydroperoxide employing a polar solvent and phenol as reaction medium Apr. 3, 1979
4101591 Ethynylbenzene compounds and derivatives thereof Jul. 18, 1978
4094912 Process for converting aromatic aldehydes to phenolic compounds Jun. 13, 1978
4092364 Caustic hydrolysis of chlorobenzene to diphenyl oxide May. 30, 1978
4088702 Process for preparing o-phenylphenol May. 9, 1978
4085150 Process for the ortho alkylation of phenols in the presence of a copper-zinc-aluminum mixed oxide catalyst Apr. 18, 1978
4080390 Process for the production of o-phenylphenol Mar. 21, 1978
4064179 Organomercaptophenol Dec. 20, 1977
4062978 Phenyl butanones Dec. 13, 1977
4060559 Process for preparing O-phenylphenol Nov. 29, 1977
4054676 Edible with polymeric hydroquinone antioxidant Oct. 18, 1977
4048239 Process for the ortho alkylation of phenols using aldehydes and hydrogen in the presence of a copper-chromium catalyst Sep. 13, 1977
4045496 Process for the hydroxylation of phenols and phenol ethers in the nucleus Aug. 30, 1977

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