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Class Information
Number: 568/381
Name: Organic compounds -- part of the class 532-570 series > Organic compounds (class 532, subclass 1) > Oxygen containing (e.g., perchlorylbenzene, etc.) > Ketones > Four-membered alicyclic ring containing
Description: Compounds which include a four-membered alicyclic ring.

Patents under this class:

Patent Number Title Of Patent Date Issued
8445697 Squarylium dyes including an anchoring group May. 21, 2013
8440840 Dye including an anchoring group in its molecular structure May. 14, 2013
6641871 Liquid-crystal compound, liquid-crystal medium comprising same, and electro-optical liquid-crystal display Nov. 4, 2003
6602692 Method for immobilizing biomolecules and affinity ligands on polymer carriers Aug. 5, 2003
6518283 Squaric acid derivatives Feb. 11, 2003
6395724 Multibinding inhibitors of cyclooxygenase-2 May. 28, 2002
5500156 Unsymmetrical squaraines for nonlinear optical materials Mar. 19, 1996
5498734 Preparation and use of (2-butene-1,4-diyl)magnesium complexes in organic synthesis Mar. 12, 1996
5405598 Sensitizing agents for use in boron neutron capture therapy Apr. 11, 1995
5235052 Process for preparing substituted cyclobutane purines Aug. 10, 1993
5130492 Process for the production of squaric acid Jul. 14, 1992
5118847 3-hydroxy-2-cyclobuten-1-one salts, their production and use Jun. 2, 1992
5087756 3-Hydroxy-2-cyclobuten-1-one salts Feb. 11, 1992
5021602 Reactive compounds containing perfluorocyclobutane rings Jun. 4, 1991
4992577 Preparation of 3-vinyl-substituted 2,2-dimethylcyclopropane-1-carboxylic acids and esters and intermediates therefor Feb. 12, 1991
4894483 Preparation of vinylglyoxal derivatives, novel vinylglyoxal derivatives and their use Jan. 16, 1990
4855460 Process for perfluoroalkylation of acid anhydrides Aug. 8, 1989
4691052 Process for the preparation of pyrethroid acids Sep. 1, 1987
4625066 Substituted acetylene-ketones Nov. 25, 1986
4529813 Production of insecticidally active vinyl-cyclopropane carboxylic acid esters Jul. 16, 1985
4523980 Process for the recovery of high purity squaric acid Jun. 18, 1985
4351961 2-(2',2'-Dichloro-3',3',3'-trifluoropropyl)- and 2-(2',2',3'-trichloro-3',3'-difluoropropyl)-4-chlorocyclobutan-1-ones Sep. 28, 1982
4291176 Production of insecticidally active vinyl-cyclopropane carboxylic acid esters Sep. 22, 1981
4284821 Dichlorovinylcyclobutanones, processes for preparing them, and their use as intermediates for producing pesticidal compositions Aug. 18, 1981
4272633 Process for the manufacture of tetrachlorocyclobutenone from hexachlorocyclobutene Jun. 9, 1981
4258175 Process for preparing an aryl ether Mar. 24, 1981
4255351 Sulfonic acid esters of 2,2,2-trichloroethylhydroxycyclobutanones Mar. 10, 1981
4242278 Process for the preparation of 2-(2',2',2'-trihalogenoethyl)-4-halogenocyclobutan-1-ones Dec. 30, 1980
4234517 2-(2',2'-Dihalovinyl)-cyclobutanones and 2-(2',2',2'-trihaloethyl)-cyclobutanones Nov. 18, 1980
4216172 Preparation of cyclobutanones Aug. 5, 1980
4159387 Squaric acid esters Jun. 26, 1979
4097530 Process for the production of squaric acid Jun. 27, 1978
4092146 Compositions, methods and new compounds for influencing plant growth May. 30, 1978
4006188 Cycloalkenones Feb. 1, 1977
4000174 Novel compounds Dec. 28, 1976

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