Did You Know...
...In 1790, the cost to obtain a patent was between $4 and $5.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7732643 | Transition metal complex, catalyst for olefin polymerization, and process for producing olefin polymer with the same The present invention relates to a transition metal complex represented by the formula (I): wherein M represents a Group 4 transition metal; —Y— represents (a): —C(R... | 06/08/2010 |
| 7531696 | Substituted cyclopentenone derivatives and their use in perfume compositions The present invention relates to substituted cyclopentanone derivatives and their use as fragrance chemicals suitable for incorporation in fine fragrances, cosmetics, toiletries and related applications. ... | 05/12/2009 |
| 7439378 | Fulvene, metallocene catalysts and preparation method thereof, and preparation of polyolefines copolymer using the same The present invention relates to a novel fulvene compound and a preparation method thereof, and more particularly to a fulvene compound having substituted groups in the 2- and 5-positions, prepared from an unsaturated ketone having a substituted group in the β-posi... | 10/21/2008 |
| 7345204 | Substituted cyclopentenone derivatives and their use in perfume compositions The present invention relates to substituted cyclopentanone derivatives and their use as fragrance chemicals suitable for incorporation in fine fragrances, cosmetics, toiletries and related applications. ... | 03/18/2008 |
| 7321057 | Method for manufacturing prostaglandin analogue The present invention provides a new method for manufacturing a prostaglandin analogue having one or more keto groups on the 5-membered ring and/or omega chain, which comprises the step of treating a corresponding hydroxyl group containing compound with a co-oxidize... | 01/22/2008 |
| 7271277 | Fulvene, metallocene catalysts and preparation method thereof, and preparation of polyolefines copolymer using the same The present invention relates to a novel fulvene compound and a preparation method thereof, and more particularly to a fulvene compound having substituted groups in the 2- and 5-positions, prepared from an unsaturated ketone having a substituted group in the β-posi... | 09/18/2007 |
| 7227044 | Cycloalkanone composition The present invention relates to a cycloalkanone composition which contains cycloalkanone (1) in an amount of 70 wt % or more based on the composition, wherein the content of a dimer of a cycloalkanone represented by formula (2) is 0.055 or less in terms of weight r... | 06/05/2007 |
| 7183440 | Pharmaceutically useful compounds A compound of formula (I) or (II): wherein A is hydrogen or CR1R2; Y and Z are each, independently, hydrogen or a halogen; X is —NR4R5, or R7; R1 is hydrogen, or a substituted or unsubstituted alkyl... | 02/27/2007 |
| 7166731 | Method of preparing fulvene compounds and method of preparing ansa-metallocene compounds using the compounds There are provided a method of simply preparing a 1,4,6-substituted, 1,4-substituted, 1,6-substituted, or 1-substituted fulvene compound, the intermediates of the fulvene compound, and a method of preparing an ansa-metallocene compound in which two cyclopentadienyl ... | 01/23/2007 |
| 7160852 | Polyalklbicylic derivatives The compound according to the formula set forth below and the use of the compound in creating fragrances, and scents in items such as perfumes, colognes and personal care products is disclosed. ... | 01/09/2007 |
| 7141699 | Substituted cyclopentenone derivatives and their use in perfume compositions The present invention relates to substituted cyclopentanone derivatives and their use as fragrance chemicals suitable for incorporation in fine fragrances, cosmetics, toiletries and related applications. ... | 11/28/2006 |
| 7109380 | Cyclopentenedione antifungal compounds and methods for their use Compounds and methods useful in the control, treatment, and prevention of fungal activity, of the following formula: where R1-3 are independently H, alkyl, methyl, acyl, halogen, phenyl, R4 ... | 09/19/2006 |
| 7026279 | Use of 3-(methoxymethyl)-2-pentylcyclopenta derivatives in perfume compositions 3-(methoxymethyl)-2-pentylcyclopent derivative compounds having the structure set forth below are disclosed: where: the dotted line represents a potential double bond; ... | 04/11/2006 |
| 6943272 | Norbornane and norbornene derivatives, use thereof and perfumed products containing same The invention concerns a novel compounds of formula (I), wherein the dotted line bond is present or not, and wherein R1 represents: when the dotted line bond is present —CHCH3OH or —CHCH3OCOR or —CHCH3XCH2... | 09/13/2005 |
| 6903067 | Fragrance composition containing 3-(3-hexenyl)-2-cyclopentenone An excellent fragrance compound having high palatability. A 3-(3-hexenyl)-2-cyclopentenone represented by a general formula (1) (wherein wavy line represents a double bond cis-form and/or trans-form) is used as an acti... | 06/07/2005 |
| 6787655 | Asymmetric 1,4-reductions of and 1,4-additions to enoates and related systems One aspect of the present invention relates to methods for the transition-metal-catalyzed asymmetric 1,4-addition of a nucleophile, e.g., hydride, to cyclic and acyclic enoates and enones. In certain embodiments of the methods of the present invention, the transitio... | 09/07/2004 |
| 6717017 | Total synthesis of antitumor acylfulvenes The present invention provides a method of synthesizing compounds of formula (I) or (II): wherein R1 is hydrogen, R′ is (C1-C4)alkyl and X is a hydroxyl protecting group. ... | 04/06/2004 |
| 6696498 | 2-cyclopenten-1-one and its derivatives as inhibitors of the NF-kB factor 2-Cyclopenten-1-one and its derivatives comprising the cyclopentenone nucleus as inhibitors of the NF-kB factor, with anti-inflammatory, anti-proliferative-immuno-suppressive, cytoprotective and antiviral activity, the substituents being selected among th... | 02/24/2004 |
| 6632788 | Polyalkylbicylic derivatives The compound according to the formula set forth below ##STR1## where A is ##STR2## B is ##STR3## or A and B together form the ring structure ##STR4## and X, R' and R are independently H and CH3 and m=0 or 1. and the use of the compound in ... | 10/14/2003 |
| 6632787 | Carbonyl compounds, methods of making the same, and their use as fragrances and fragrance-enhancing additives Carbonyl compounds derived from the reaction of alkyl cyclopentenols and vinyl ethers are described. The carbonyl compounds described have excellent fragrance properties, and their use as fragrances and/or fragrance-enhancing compounds is also described. ... | 10/14/2003 |
| 6583322 | Dihydro and hexahydro isoalpha acids having a high ratio of trans to cis isomers, production thereof, and products containing the same This invention describes heretofore unknown forms of dihydro (DHIA) and hexahydro (HHIA) isoalpha acids having a high ratio of trans to cis isomers and a process for their production. Also, non-precipitating clear 5, 10, 20% and higher aqueous solutions t... | 06/24/2003 |
| 6541672 | Derivatives of benzilidine cyclohexanone, benzilidine cyclopentanone, and benzilidine acetone and their synthesis The invention deals with the derivatives of benzilidine having basic formula as follows (I): ##STR1## wherein X can be cyclohexanone, cyclopentanone, or acetone, while Y and Z can be either electron withdrawing, electron donating or steric group. Y m... | 04/01/2003 |
| 6528688 | Prostacyclin derivatives An improved method is described for making 9-deoxy-PGF1 -type compounds. In contrast to the prior art, the method is stereoselective and requires fewer steps than the known methods for making these compounds.... | 03/04/2003 |
| 6495725 | Process for the preparation of optically active enones and intermediates thereof The present invention provides a simplified and convenient process for the preparation of an optically active enone such as 7,7-dimethyl-6,8-dioxabicyclo-[3,3,0]oct-3-en-2-one. The invention further provides novel optically active intermediate compounds. ... | 12/17/2002 |
| 6465664 | Asymmetric 1,4-reductions of and 1,4-additions to enoates and related systems One aspect of the present invention relates to methods for the transition-metal-catalyzed asymmetric 1,4-addition of a nucleophile, e.g., hydride, to cyclic and acyclic enoates and enones. In certain embodiments of the methods of the present invention, th... | 10/15/2002 |
| 6441052 | Cyclopentylalkyl-nitriles The present invention provides compounds of formula I ##STR1## wherein R1 and R3 are independently H or C1-3 alkyl, and R2 is H, C1-3 alkyl, methylene or ethylidene, with the proviso that R1 ... | 08/27/2002 |
| 6441245 | Process for stereoselective synthesis of prostacyclin derivatives An improved method is described for making 9-deoxy-PGF1 -type compounds. In contrast to the prior art, the method is stereoselective and requires fewer steps than the known methods for making these compounds.... | 08/27/2002 |
| 6392100 | 2-Cyclopenten-1-one as inhibitors of the NF-KB factor 2-Cyclopenten-1-one and its derivatives comprising the cyclopentenone nucleus as inhibitors of the NF-kB factor, with anti-inflammatory, anti-proliferative, immunosuppressive, cytoprotective and antiviral activity, the substituents being selected among th... | 05/21/2002 |
| 6380262 | 5-membered ring compounds ##STR1## 5-Membered ring compounds represented by general formula (I), optically active isomers thereof or salts of the same. These compounds have physiological activities including a carcinostatic effect. In said formula the bond shown by the dotted line... | 04/30/2002 |
| 6359181 | Cyclopentane 1-hydroxy alkyl or alkenyl-2-one or 2-hydroxy derivatives as therapeutic agents The present invention provides a novel compound represented by the general formula I; ##STR1## wherein R is H or COR3 ; R1 is H, R2, phenyl, or COR3, wherein R2 is C1 -C5 lower a... | 03/19/2002 |
| 6350917 | -crystal of cyclopentenone Crystals of trans-4,5-dihydroxy-2-cyclopenten-1-one of an -type.... | 02/26/2002 |
| 6326405 | Anticancer agent An anticancer agent in which 4-cyclopentene-1,3-dione represented by the following formula [I] and/or 4-hydroxy-2-cyclopentenone represented by the following formula [II] are/is effective component(s). ##STR1##... | 12/04/2001 |
| 6326369 | Bicyclic quinone compounds, their production and use A compound of the formula: ##STR1## wherein R1 and R2 each represents a lower alkyl, or R1 and R2 may be bonded together to form a ring; X represents a spacer of which the number of atoms constituting the princi... | 12/04/2001 |
| 6287829 | Process for the selective enzymatic hydroxylation of aldehydes and ketones A process for the selective enzymatic hydroxylation of aldehydes and ketones using chiral anchor-protective groups.... | 09/11/2001 |
| 6271408 | Process for making metabolites of lycopene This invention relates to trimethylsilyloxy-cyclopentane derivatives: 3-(1-Acetoxy-1-methylethyl)- 2-formyl-1-methyl-1-trimethylsilyloxy-cyclopentane; 4-[5-(1-Hydroxy-1-methylethyl)-2-methyl-2-trimethylsilyloxy-cyclopentyl]-3 -buten-2-one; 5-[5-(... | 08/07/2001 |
| 6229051 | Catalyst for oxidative NEF reaction using basic hydrogen peroxide The preparation of carbonyl compounds by oxidizing a nitro functional group of an organic compound is described. Oxidation is accomplished under catalyzed oxidative Nef reaction conditions.... | 05/08/2001 |
| 6198004 | Process for hydrogenation of isoalpha acids The invention relates to a process for converting alpha acid and isoalpha acids to tetrahydroisoalpha acid. The process comprises isomerizing an alpha acid to produce isoalpha acid and hydrogenating the isoalpha acid in the presence of a noble metal catal... | 03/06/2001 |
| 6184419 | , ଲ-unsaturated ketones The present invention relates to new ,ଲ-unsaturated ketones of formula I. The new compounds exhibit an intense, very long lasting green galbanum-type odor with fruity undertones. Compositions containing these novel compounds are also provided... | 02/06/2001 |
| 6166091 | 2,3,4-trihydroxycyclopentanone 2,3,4-trihydroxycyclopentanone represented by the following formula [I], its optically active substance or salt thereof. ##STR1##... | 12/26/2000 |
| 6160184 | Total synthesis of antitumor acylfulvenes The present invention provides a method of synthesizing compounds of ##STR1## wherein R and R' are independently (C1 -C4)alkyl.... | 12/12/2000 |
