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Class Information
Number: 568/816
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) > Plural alicyclic rings containing
Description: Compounds which contain at least two alicyclic rings.

Sub-classes under this class:

Class Number Class Name Patents
568/817 Polycyclo ring system 139

Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8481769 Isolation and purification of cartenoids from marigold flowers Jul. 9, 2013
8450533 Cyclopropanation process May. 28, 2013
8258126 Vitamin D.sub.3 analogues for the prevention and treatment of bone disorders Sep. 4, 2012
8247615 Process of converting esterified xanthophylls from Capsicum to non-esterified xanthophylls in high yields and purities Aug. 21, 2012
8236929 Method and system for production of zein and/or xanthophylls using chromatography Aug. 7, 2012
8134033 Fluorocompound having highly fluorinated norbornane structure, fluoropolymer, and their production processes Mar. 13, 2012
8115036 Fluorine-containing cyclic compound, fluorine-containing polymer compound, resist material using same and method for forming pattern Feb. 14, 2012
8097762 Process for the preparation of .beta.- and .alpha.-cryptoxanthin Jan. 17, 2012
8093436 Process for synthesis of (3R,3'R)-zeaxanthin and (3R,3'S;meso)-zeaxanthin from (3R,3'R,6'R)-lutein via (3R)-3',4'-anhydrolutein Jan. 10, 2012
8034983 Process for the preparation of xanthophyll crystals Oct. 11, 2011
8008532 Processes and methods for extraction and purification of lutein from marigold esters Aug. 30, 2011
7943804 Lutein extraction from ozone-treated plant sources May. 17, 2011
7858828 Process for synthesis of (3R,3'R,6'R)-lutein and its stereoisomers Dec. 28, 2010
7812198 Process for the manufacture of a composition containing at least one xanthophyll Oct. 12, 2010
7671242 Isolation of aflatoxin-free lutein from aflatoxin-contaminated plants and plant products Mar. 2, 2010
RE40938 Process for isolation, purification, and recrystallization of lutein from saponified marigold oleoresin and uses thereof Oct. 13, 2009
RE40931 Process for isolation, purification, and recrystallization of lutein from saponified marigold oleoresin and uses thereof Oct. 6, 2009
RE40912 Process for isolation, purification, and recrystallization of lutein from saponified marigold oleoresin and uses thereof Sep. 8, 2009
7507865 Method for obtaining calcipotriol hydrate Mar. 24, 2009
7485738 Method for preparing high-content food-grade zeaxanthin Feb. 3, 2009
7390869 Process for removing metal species in the presence of hydrogen and a porous material and polyester polymer containing reduced amounts of metal species Jun. 24, 2008
7368613 Sandal fragrances May. 6, 2008
7321068 Method for producing tricyclodecandialdehyde Jan. 22, 2008
7301057 Process for preparing TCD-alcohol DM Nov. 27, 2007
7271298 Process for isolation and purification of xanthophyll crystals from plant oleoresin Sep. 18, 2007
7115786 Method for production of .beta.-cryptoxanthin and .alpha.-cryptoxanthin from commercially available lutein Oct. 3, 2006
7067615 Hydrotreating polyester precursors Jun. 27, 2006
6911564 Method for production of rare carotenoids from commercially available lutein Jun. 28, 2005
6909021 Method of extracting lutein from green plant materials Jun. 21, 2005
6867335 Uncatalysed addition reactions Mar. 15, 2005
6818798 Process for making a (3R,3'R)-zeaxanthin precursor Nov. 16, 2004
6743953 Process for the preparation of xanthophyll crystals Jun. 1, 2004
6737552 Method for extracting lutein from green plant materials May. 18, 2004
6639113 Production of dry powders of one or more oxygenated carotenoids Oct. 28, 2003
6576787 Hydroxymethyl-group-containing alicyclic compound and process for producing the same Jun. 10, 2003
6562782 Oligocycloalkanoid compounds and methods of use May. 13, 2003
6548715 Structural analogues of vitamin D Apr. 15, 2003
6504067 Process to obtain xanthophyll concentrates of high purity Jan. 7, 2003
6420614 Process for obtaining 3'-epilutein Jul. 16, 2002
6380442 Process for the isolation of mixed carotenoids from plants Apr. 30, 2002
6376722 Lutein to zeaxanthin isomerization process and product Apr. 23, 2002
6353141 Functionalized cyclopentene-derived oligomer mixtures, their preparation and their use Mar. 5, 2002
6329557 Purification of xanthophylls from marigold extracts that contain high levels of chlorophylls Dec. 11, 2001
6262316 Oral preparation for the prophylactic and therapeutic treatment of Helicobacter sp. infection Jul. 17, 2001
6255439 1,1-Bis(4-hydroxyphenyl)-3-alkylcyclohexanes, method for their preparation and polycarbonates prepared therefrom Jul. 3, 2001
6191293 Trans-xanthophyll ester concentrates of enhanced purity and methods of making same Feb. 20, 2001
6169217 Method for extracting xanthophylls from corn Jan. 2, 2001
6162954 Odorants Dec. 19, 2000
6025531 Processes for preparing optically active alcohols and optically active amines Feb. 15, 2000
5998678 Process for preparing carotenoid pigments Dec. 7, 1999

1 2 3

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