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Class Information
Number: 568/723
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 > Two phenols bonded directly to the same carbon > Identical phenols
Description: Compounds wherein the two phenolic nuclei are identical (i.e., gem bivalent phenols).










Sub-classes under this class:

Class Number Class Name Patents
568/726 Halogen containing 109
568/727 Preparing from a phenol and an aldehyde or ketone 207
568/724 Purification or recovery 194


Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8455414 Macromolecular amine-phenolic antioxidant compositions, process technology thereof, and uses thereof Jun. 4, 2013
8389197 Compound, positive resist composition and resist pattern forming method Mar. 5, 2013
8350096 Compound for resist and radiation-sensitive composition Jan. 8, 2013
8216970 1,1-bis(4-hydroxyphenyl)-1-phenylethane and thermal recording material for recording the same Jul. 10, 2012
8211588 Sulfonated poly(arylene sulfone), crosslinked material thereof, clay nanocomposite including the same, and fuel cell including the same Jul. 3, 2012
8173351 Compound and radiation-sensitive composition May. 8, 2012
8110334 Radiation-sensitive composition Feb. 7, 2012
8039679 Bisphenol-A plant yield enhancement Oct. 18, 2011
7932014 Photosensitive compound, photosensitive composition, resist pattern forming method, and device production process Apr. 26, 2011
7902407 Method for preparation of salts of hydroxy-substituted aromatic compounds Mar. 8, 2011
7737310 Method for producing biphenols from monophenols Jun. 15, 2010
7696388 Process for producing bisphenol-A Apr. 13, 2010
7601784 Molecular compounds containing polymers having hydrogen bond sites as the constituent compounds Oct. 13, 2009
7414160 Process for producing aromatic compounds Aug. 19, 2008
7371902 Methods for purifying p,p-bisphenol-A May. 13, 2008
7115785 Method for making salts hydroxy-substituted hydrocarbons Oct. 3, 2006
7087799 Amino group containing phenol derivative Aug. 8, 2006
7067704 Process for purifying bisphenol-a Jun. 27, 2006
7045664 Process for producing bisphenol A May. 16, 2006
7019179 Process for producing aromatic compounds Mar. 28, 2006
6906226 Hydroxymethyl-substituted polyfunctional phenols Jun. 14, 2005
6872859 Process for the preparation of bisphenols with zeolites Mar. 29, 2005
6689464 Method and device for producing bisphenol a prills and bisphenol a prills produced according to this method Feb. 10, 2004
6670512 Substituted tetraarylethylene compounds Dec. 30, 2003
6620939 Method for producing bisphenol catalysts and bisphenols Sep. 16, 2003
6610890 Aldose reductase inhibitors and pharmaceutical compositions Aug. 26, 2003
6602551 Curable silicone adhesive compositions Aug. 5, 2003
6600004 Method of preparing polyestercarbonates Jul. 29, 2003
6566458 Polysulfone/polysiloxane polycarbonate block copolymers May. 20, 2003
6486222 Combination ion exchange resin bed for the synthesis of bisphenol A Nov. 26, 2002
6433236 Acid catalyzed isomerization of substituted diaryls Aug. 13, 2002
6414106 Process for the neutralization of residual acid species in crude dihydric phenols Jul. 2, 2002
6384288 Method for the production of bis(4-hydroxyaryl)alkanes May. 7, 2002
6316677 Production process of bisphenol compounds Nov. 13, 2001
6313355 Process for the preparation of tetrabromobisphenol-A Nov. 6, 2001
6300527 Process for the preparation of tetrabromobisphenol-A Oct. 9, 2001
6235946 Process for the preparation of tetrabromobisphenol-A May. 22, 2001
6218584 Process for the preparation of tetrabromobisphenol-A Apr. 17, 2001
6207866 Method for producing diarylmethane or its derivatives Mar. 27, 2001
6162953 Process for the preparation of tetrabromobisphenol-A Dec. 19, 2000
6147169 Curable coating composition Nov. 14, 2000
6084137 Process for the preparation of tetrabromobisphenol-A Jul. 4, 2000
6084136 Process for the preparation of tetrabromobisphenol-A Jul. 4, 2000
6011184 Descaling of bisphenol-A reactor using water Jan. 4, 2000
6002051 Tertiary alkyl alkylphenols and organic compositions containing same Dec. 14, 1999
6002050 Process for the preparation of tetrabromobisphenol-A Dec. 14, 1999
5851837 Method for determination of salt stoichiometry Dec. 22, 1998
5723690 Process for the preparation of tetrabromobisphenol-A Mar. 3, 1998
5723688 Process for preparing an adduct of a bisphenol with phenolic compound Mar. 3, 1998
5723691 Method for preparing ion-exchange resin for use as a catalyst in the synthesis of bisphenols Mar. 3, 1998

1 2 3 4










 
 
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