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Class Information
Number: 549/369
Name: Organic compounds -- part of the class 532-570 series > Organic compounds (class 532, subclass 1) > Heterocyclic carbon compounds containing a hetero ring having chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) or nitrogen as the only ring hetero atoms (class 540, subclass 1) > Oxygen containing hetero ring (e.g., dioxirane, etc.) > The hetero ring is six-membered > Plural ring oxygens in the hetero ring (e.g., 1,2-dioxin, etc.) > The ring oxygens are in the 1,3-positions of the hetero ring (e.g., 1,3 dioxane, etc.)
Description: Compounds in which the hetero ring consists of two ring oxygens and four ring carbons wherein the ring oxygens are in the 1,3-positions of the hetero ring.










Sub-classes under this class:

Class Number Class Name Patents
549/374 Chalcogen attached indirectly to the hetero ring by nonionic bonding 192
549/372 Chalcogen or -c(=x), wherein x is chalcogen, bonded directly to the hetero ring 135
549/373 Nitrogen attached indirectly to the hetero ring by nonionic bonding 192
549/371 Nitrogen bonded directly to the hetero ring 39
549/370 Plural hetero rings 142
549/376 Preparing by reacting an aldehyde with a compound containing acyclic carbon to carbon unsaturation 19


Patents under this class:
1 2 3 4 5 6

Patent Number Title Of Patent Date Issued
8574456 Liquid-crystalline medium and liquid crystal display Nov. 5, 2013
8536196 Substituted 1,3-dioxanes useful as PPAR modulators Sep. 17, 2013
8252389 Mesogenic dimers Aug. 28, 2012
8211513 Liquid-crystalline compounds and liquid-crystalline media Jul. 3, 2012
8197709 Liquid-crystalline compounds Jun. 12, 2012
8188030 Fabric softener compositions and methods of manufacture thereof May. 29, 2012
8178579 Dioxanes and uses thereof May. 15, 2012
8158564 Alkyl acetal compound, process for producing the same, and lubricating oil composition Apr. 17, 2012
8114902 2-aminobutanol compound and use thereof for medical purposes Feb. 14, 2012
8021571 Chiral reactive mesogen mixture Sep. 20, 2011
7951433 Five-ring liquid crystal compound having CF.sub.2O bonding group, liquid crystal composition, and liquid crystal display device May. 31, 2011
7951432 Five-ring liquid crystal compound having cyclohexane ring, liquid crystal composition, and liquid crystal display device May. 31, 2011
7928252 Prostaglandin synthesis and intermediates for use therein Apr. 19, 2011
7846514 Liquid crystal compound, liquid crystal composition and, liquid crystal display device Dec. 7, 2010
7846513 Compound having alkyl on benzene ring, liquid crystal composition having the compound, and liquid crystal display device having the liquid crystal composition Dec. 7, 2010
7838692 Alkyl acetal compound, process for producing the same, and lubricating oil composition Nov. 23, 2010
7785675 Compound and liquid crystal composition Aug. 31, 2010
7767277 Fluorophenyl compounds for liquid-crystalline mixtures Aug. 3, 2010
7728069 Reactive cyclic carbonates and ureas used for modifying biomolecules, polymers, and surfaces Jun. 1, 2010
7691456 Spiro[3.3] heptyl-dioxan derivatives and their use in liquid crystal media Apr. 6, 2010
7662959 Quaternary trifluoromethylcyclohexane derivatives for liquid crystals Feb. 16, 2010
7638256 Fluorinated cyclic structure-bearing silicon compounds and silicone resins, resist compositions using the same, and patterning process Dec. 29, 2009
7629476 Method for producing 2,5-dimethylphenyl acetic acid Dec. 8, 2009
7612243 Cyclopenta[b]naphthalene derivatives Nov. 3, 2009
7531695 Therapeutic agents for the treatment of cancer, metabolic diseases and skin disorders May. 12, 2009
7482044 Liquid crystalline medium and liquid crystal display Jan. 27, 2009
7354893 Acetals, use thereof as fragrances and methods for production thereof Apr. 8, 2008
7351452 Liquid crystalline compounds containing a biphenyl core Apr. 1, 2008
7329637 Methylene dioxy octahydroindene derivatives Feb. 12, 2008
7321052 Process for production of a composition useful as a fuel Jan. 22, 2008
7291367 Liquid-crystalline compounds Nov. 6, 2007
7271296 Method for the production of phytofluene Sep. 18, 2007
7189863 Process for producing trifluoromethyl-substituted 2-alkoxyacetophenone derivatives Mar. 13, 2007
7097887 Liquid crystal compounds Aug. 29, 2006
7081279 Alkenyl compound having a negative .DELTA..epsilon. value, liquid crystal composition, and liquid crystal display device Jul. 25, 2006
7074462 Ester compounds and their use in liquid crystalline media Jul. 11, 2006
7074464 Perfluoropropenyl-containing compound, liquid crystal composition and liquid crystal display element Jul. 11, 2006
7029730 CF.sub.2O-bridged, axially substituted cyclohexane derivatives Apr. 18, 2006
7014890 Fluorinated naphthalenes, liquid-crystal mixtures comprising them, and liquid-crystal displays Mar. 21, 2006
7001647 Perfluoroallyloxy compound and liquid crystal composition containing the same Feb. 21, 2006
6962767 Acetal compound, polymer, resist composition and patterning process Nov. 8, 2005
6933385 Protected 3,5-dihydroxy-2,2-dimethyl-valeroamides for the synthesis of epothilones and derivatives and process for the production and the use Aug. 23, 2005
6908645 Liquid-crystalline medium Jun. 21, 2005
6872502 Chemically amplified negative photoresist, and photoresist composition Mar. 29, 2005
6844032 Liquid crystal compounds having bis(trifluoromethyl) phenyl rings, liquid crystal compositions and liquid crystal display devices Jan. 18, 2005
6808762 Oxabicyclooctanes Oct. 26, 2004
6759103 Fluorinated cyclopenta[b]naphthalenes and their use in liquid-crystal mixtures Jul. 6, 2004
6737125 Fluorinated cyclopenta[a]naphthalenes and their use in liquid-crystal mixtures May. 18, 2004
6730803 Synthetic intermediate for epothilone derivative and production method thereof May. 4, 2004
6692657 Alkenyl compound having a negative .DELTA..epsilon. value, liquid crystal composition, and liquid crystal display device Feb. 17, 2004

1 2 3 4 5 6










 
 
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