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Class Information
Number: 568/717
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) > Polyphenols
Description: Compounds which contain at least two benzene rings each having -OH or -OM bonded directly thereto (i.e., at least two phenolic nuclei).










Sub-classes under this class:

Class Number Class Name Patents
568/718 Three or more rings containing 92
568/730 Two phenols bonded directly to each other 124
568/722 Two phenols bonded directly to the same carbon 182
568/729 Two phenols bonded directly to two different carbons of an acyclic chain 95


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8110334 Radiation-sensitive composition Feb. 7, 2012
7923587 Anti-oxidant macromonomers and polymers and methods of making and using the same Apr. 12, 2011
7763291 Tea polyphenol composition and method for producing the same Jul. 27, 2010
7749525 Pest-impervious packaging material and pest-control composition Jul. 6, 2010
7745670 Curcumin-Resveratrol hybrid molecule Jun. 29, 2010
7622613 Thiol compound and photosensitive composition using the same Nov. 24, 2009
7473549 Target recognition element and biosensor including the same Jan. 6, 2009
7414160 Process for producing aromatic compounds Aug. 19, 2008
7321050 Anti-inflammatory and psoriasis treatment and protein kinase inhibition by hydroxy stilbenes and novel stilbene derivatives and analogues Jan. 22, 2008
7312368 Method for selective reduction of aromatic compounds Dec. 25, 2007
7230141 Method for producing toluol derivatives Jun. 12, 2007
7161000 Method for producing phenol condensate Jan. 9, 2007
7125951 Monomers containing at least one biaryl unit and polymers and derivatives prepared therefrom Oct. 24, 2006
7126031 Bridged bi-aromatic ligands, catalysts, processes for polymerizing and polymers therefrom Oct. 24, 2006
7087799 Amino group containing phenol derivative Aug. 8, 2006
7045664 Process for producing bisphenol A May. 16, 2006
7019179 Process for producing aromatic compounds Mar. 28, 2006
6960665 Process for arylating or vinylating or alkynating a nucleophilic compound Nov. 1, 2005
6960641 Method of making block copolymers by solid state polymerization Nov. 1, 2005
6784228 Epoxy resin composition, cured article thereof, novel epoxy resin, novel phenol compound, and process for preparing the same Aug. 31, 2004
6620978 Positive photoresist composition and process for synthesizing polyphenol compound Sep. 16, 2003
6600004 Method of preparing polyestercarbonates Jul. 29, 2003
6414106 Process for the neutralization of residual acid species in crude dihydric phenols Jul. 2, 2002
6399740 Process for reducing mono-functional and non-functional by-products during aralkylation of phenolics Jun. 4, 2002
6384288 Method for the production of bis(4-hydroxyaryl)alkanes May. 7, 2002
6271337 Process for the preparation of calixarenes and new calixarene compounds Aug. 7, 2001
6201123 Catalyst composition, catalyst solution and process for preparing optically active epoxide Mar. 13, 2001
5959157 Process for making hydroxy-substituted ethynylated biphenyl compounds Sep. 28, 1999
5959158 Method and system for bisphenol a production using water Sep. 28, 1999
5889137 Phenolic polymers made by aralkylation reactions Mar. 30, 1999
5874645 Process for the preparation and purification of 4,4'-dihydroxy-alpha-substituted stilbene Feb. 23, 1999
5773552 Phenolic polymers made by aralkylation reactions Jun. 30, 1998
5756642 Phenolic polymers made by aralkylation reactions May. 26, 1998
5739259 Phenolic polymers made by aralkylation reactions Apr. 14, 1998
5723688 Process for preparing an adduct of a bisphenol with phenolic compound Mar. 3, 1998
5674970 Phenolic polymers made by aralkylation reactions Oct. 7, 1997
5612479 Polyphenols containing mesogenic moieties as lateral substituents Mar. 18, 1997
5583267 Biocatalytic process for preparing tetraalkylbiphenols Dec. 10, 1996
5475155 Preparation of 4,4'-dihydroxy-alpha'-dialkylstilbenes and 4, 4'-dihydroxy-alpha'-dialkylstilbenes Dec. 12, 1995
5463140 Process for making polyphenols from ketones or aldehydes and phenols Oct. 31, 1995
5420363 Optically active phenol derivatives and preparation thereof May. 30, 1995
5420361 Formulation of and dehydration of hydroxylated diphenyl acetylenes May. 30, 1995
5414150 Preparation of 4,4'-dihydroxy-alpha-alkylstilbenes and 4,4'-dihydroxy-alpha, alpha'-dialkylstilbenes May. 9, 1995
5395985 Compound and separating agent Mar. 7, 1995
5364977 Clathrate compounds comprising tetrakisphenols as host Nov. 15, 1994
5354913 Optically active phenol derivatives and preparation thereof Oct. 11, 1994
5340937 Avoiding sulfonic phenols in production of phenols Aug. 23, 1994
5331103 Process for monohydroxylation of phenolic compounds Jul. 19, 1994
5319149 Bis[4'-(4-hydroxyphenyl)-phenyl]alkanes and polycarbonates prepared therefrom Jun. 7, 1994
5304688 Process for the preparation of bishydroxy aromatic compounds Apr. 19, 1994

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