U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Famous Patents

The first match was accidentally discovered in 1826 when John Walker scraped a stick with chemicals on the end against a stone floor.

Newsletter  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.

 

Assignee: Nikken Chemicals Co., Ltd.


Location: Tokyo, JP
No. of patents: 43

1    
NumberTitleIssue Date
7314643Soft capsule preparation
A soft capsule preparation which comprises a dispersion of (2E,4E,6E,10E)-3,7,11,15-tetramethyl-2,4,6,10,14-hexadecapentaenoic acid in a vegetable oil filled in a soft capsule comprising a shell having a light blocking effect. The soft capsule preparation preferably...
01/01/2008
6984742Method for preparing polyprenyl compounds
A method for preparing a polyprenyl compound wherein an aldehyde represented by the following general formula [I]: [wherein n represents an integer of from 0 to 3]and a Wittig reagent represented by the following genera...
01/10/2006
6943195Cycloalkenone derivative
(−)-3-[3-[(1R,2R,4S)-bicyclo[2.2.1]hept-2-yloxy]-4-methoxyanilino]-2-methyl-2-cyclopenten-1-one, or its hydrate or solvate, or a pharmaceutical composition containing the same. ...
09/13/2005
6703527Method for oxidation of allyl alcohol
Allyl alcohols are converted into corresponding aldehydes or ketones in a high yield under a mild condition by using an inexpensive aluminum alkoxide as an Oppenauer oxidation catalyst and a hydride acceptor. Thus, there is provided an industrially useful...
03/09/2004
6489469Method for storing or transporting erythritol solution
A method for the storage or transportation of an erythritol by maintaining erythritol in the form of a solution at a concentration and at a temperature in given ranges. Setting up such conditions enables long-term storage of an erythritol solution or tran...
12/03/2002
6433167Triazolo-1,4-diazepine compounds and medicinal composition containing the same
A triazolo-1,4-diazepine compound having the formula (I): ##STR1## wherein A represents CO, CO--B, or B, B represents a C1 to C6 alkylene group or a C2 to C6 alkylene group having an oxygen atom interposed in th...
08/13/2002
6433173Process for the preparation of ipidacrine or ipidacrine hydrochloride hydrate
A process for the preparation of ipidacrine (I) (9-amino-2,3,5,6,7,8-hexahydro-1H-cyclopenta[b]quinoline) ##STR1## which comprises the reaction of diphosphorus pentaoxide with a trialkyl phosphate and a hydroxyl compound in a hydrocarbon solvent to thereb...
08/13/2002
6426091Sustained-release theophylline tablet
A theophylline sustained release tablet obtained by coating core granules composed mainly of theophylline with a layer of a coating film composed of a hydrophobic material and a plastic excipient and optionally containing an enteric polymer material to fo...
07/30/2002
6369251Method for purification of polyprenyl compounds
A method for purification of a polyprenyl compound, which comprises the step of recrystallizing a polyprenyl compound, preferably (2E, 4E, 6E, 10E)-3,7,11,15-tetramethyl-2,4,6,10,14-hexadecapentaenoic acid by using a solvent comprising an alcohol....
04/09/2002
63068531,4-Dihydropyridine derivatives
A 1,4-dihydropyridine derivative having the formula (I): ##STR1## wherein, R1 represents a substituted or unsubstituted phenyl or pyridyl group, R2 represents a C1 to C5 lower alkyl group, R3 represen...
10/23/2001
6280717Cation exchange resin preparation
A cation exchange resin preparation in the dosage form of dry syrups and the like which comprises a cation exchange resin such as polystyrene calcium sulfonate and a gelleing agent such as carboxymethylcellulose sodium (CMC-Na), and may further comprises ...
08/28/2001
6265402Use of 2-phenylmorpholin-5-one derivatives
A 2-phenylmorpholin-5-one derivative having the formula (I): ##STR1## wherein R1 represents a C1 to C8 alkyl group, a C3 to C7 cycloalkyl group or an indanyl group, R2 represents a C1...
07/24/2001
62357395-phenyl-3-pyridazinone derivatives and drug composition containing the same
A 5-phenyl-3-pyridazinone derivative having the formula (I) ##STR1## wherein R1 represents an unsubstituted or substituted C1 to C8 alkyl group, C3 to C7 cycloalkyl group, or indanyl group; R2
05/22/2001
62357363-anilino-2-cycloalkenone derivatives
A 3-anilino-2-cycloalkenone derivative of the formula (I): ##STR1## wherein, R1 represents a C1 to C8 alkyl group, which may have a substituent, except for a methyl group, a C3 to C7 cycloalkyl group,...
05/22/2001
6214605Microorganism and a process for producing polyols by using the same
Trichosporonoides kounosuensis 7E-1 (FERM BP-6572) having taxonomical properties different from those of any known species belonging to the genus Trichosporonoides, and having the ability to efficiently produce a polyol such as erythritol....
04/10/2001
6187336Process for producing a solid which is rapidly soluble in the oral cavity
A rapidly soluble solid in the oral cavity comprising erythritol, which has a porous structure; and a process for producing a rapidly soluble solid in the oral cavity comprising erythritol, which comprises the steps of: preparing a composition comprising ...
02/13/2001
6184238N-hydroxyurea derivative and pharmaceutical composition containing the same
An N-hydroxyurea derivative having an antiallergic action or anti-inflammatory action having the formula ##STR1## wherein, either one of R1, R3, and R4 represents A, either one of the other groups of R1, R3...
02/06/2001
6180094Remedies for hyperphosphatemia
A medicament which comprises as an active ingredient a weakly basic anion exchange resin chelating with ferric ions, preferably a polyamine-type or an acrylic-type resin. The medicament has excellent adsorbability and selectivity to phosphate ions and eff...
01/30/2001
6146763Ultraviolet-cutoff material and process for preparing the same
There are provided an ultraviolet-cutoff material comprising a material, capable of cutting off ultraviolet light, coated with a clay mineral, and a process for preparing an ultraviolet-cutoff material, comprising the steps of dispersing a clay mineral in...
11/14/2000
6110715Method for producing erythritol using a microorganism
The present invention provides a method for producing erythritol comprising cultivating microorganisms, which produce erythritol, belonging to Trichosporonoides megachiliensis in a culture medium having a high saccharide concentration and then recovering ...
08/29/2000
6106863Sustained-release metal valproate tablets
The present invention provides a sustained-release metal valproate tablet which is comparatively compact and is not influenced by a meal, the sustained-release metal valproate comprising a core tablet comprising a metal valproate having on the surface a c...
08/22/2000
6090405Buprenorphine percutaneous absorption preparation
Disclosed is a buprenorphine percutaneous absorption preparation comprising a backing having formed on one side thereof a pressure-sensitive adhesive layer containing at least one of buprenorphine and a salt thereof, wherein the pressure-sensitive adhesiv...
07/18/2000
6074857Method of producing erythritol
A method for producing erythritol comprising cultivating a strain of Trichosporonoides oedocephalis in a culture medium containing 20 to 50 w/v % of saccharides and then recovering the erythritol accumulated in the culture medium. A commercial large scale...
06/13/2000
5919799Imidazothiazole compound
An imidazothiazole compound having the formula (A): ##STR1## wherein R1 is a phenyl or napthyl which may have a substituent, R2 is an acyl, and the two bonds at dotted line portions may or may not exist simultaneously, or a phar...
07/06/1999
5916797Mutant strain of Trichosporonoides oedocephalis
A mutant strain of Trichosporonoides oedocephalis whose saccharide-based erythritol yield, at a saccharide concentration of 30 w/v % or higher, but less than 60 w/v %, is higher than that in its parent strain and whose cell biomass cultured is less than t...
06/29/1999
5869088Transdermal administration preparation of a 9-aminocyclopenta (b) quinoline
A transdermal administration preparation containing a 9-aminocyclopenta(b)quinoline, preferably 9-amino-2, 3,5,6,7,8-hexahydro-1H-cyclopentane(b)quinoline or its hydrochloride, as an active ingredient and the following transdermal absorption enhancer, ...
02/09/1999
58439501,4-dihydropyridine compound and pharmaceutical composition containing the same
A 1,4-dihydropyridine compound having the formula (I): ##STR1## wherein, R1 indicates --COO--A--(3-pyridyl), A indicates a C3 -C6 straight chain alkylene group in which one piperazine may be interposed; R2 ...
12/01/1998
5736185Method for suppressing grassy smell and acid taste of vegetables and fruit
Disclosed herein is a method of suppressing and masking the grassy smell and acid taste characteristic of vegetables and fruits, thereby making food and drink more palatable, by adding erythritol to food and drink in their production from vegetables and f...
04/07/1998
5648400Process for producing polymeric electrolyte complex and ion-exchange resin
A monomer having cationic groups and a monomer having anionic groups are introduced into polymeric substrates such as fibers, woven fabrics, nonwoven fabrics and membranous materials through radiation-initiated graft polymerization, thereby producing poly...
07/15/1997
5618555Percutaneous absorption preparation
A percutaneous absorption preparation which is excellent in the skin penetration of a non-narcotic analgesic buprenorphine and can sustain a high blood level in a stable state over a long period of time is provided. The percutaneous absorption preparation...
04/08/1997
5589191Slow-release sodium valproate tablets
A slow, release sodium valproate tablet with a coating layer, obtained by coating a core containing sodium valproate with a coating agent comprising ethyl cellulose having silicic acid anhydride dispersed therein. The slow-release tablets, while having a ...
12/31/1996
5202507Method for drying erythritol crystals
A method for drying erythritol crystals having a moisture content of from 1 to 10% by weight to reduce to the moisture content of 0.15% by weight or below, which comprises drying under fluidized state wherein a temperature of a gas to be used in the fluid...
04/13/1993
5036011Novel Aureobasidium sp. microorganisms and method for obtaining the same, and method for preparing erythritol with the same
Biologically pure culture of Aureobasidium sp. SN-124A strain (FERM BP-1429) and artificial mutants thereof according to the present invention show the properties of forming and accumulating erythritol in a culture solution, when aerobically cultured on a...
07/30/1991
49855581,4-dihydropyridine derivative
A 1,4-dihydropyridine derivative having the formula (I): ##STR1## wherein R1 represents 2-(5,6-dihydro-p-dioxinyl) group, R2 represents a pyridyl group which may be substituted with one methyl group or ethyl group, and n is an i...
01/15/1991
4968708Imidazo[2,1-B]benzothiazole compounds and antiulcer compositions containing the same
The present invention relates to novel imidazo-[2,1-b]benzothiazole compounds represented by formula (I) and pharmacological acceptable salts thereof: ##STR1## wherein R1 represents a hydrogen atom or a lower alkyl group having 1 to 4...
11/06/1990
4950832Method for preparation of dialkylnaphthalenes and catalyst for the same
Dialkylnaphthalenes, especially 2,6-dialkylnaphthalene can be prepared with good yield for a long time by reacting naphthalene and/or monoalkylnaphthalenes with C2 -C4 olefin in the presence of silica-alumina catalyst containing 0.1-...
08/21/1990
4939091Novel auerobasidium sp. microorganisms, method for obtaining the same and method for preparing erythritol with the same
Biologically pure culture of Aureobasidium sp. SN-124A strain (FERM BP-1429) and artificial mutants thereof according to the present invention show the properties of forming and accumulating erythritol in a culture solution, when aerobically cultured on a...
07/03/1990
4692337Sustained release pharmaceutical tablet of theophylline and production process thereof
A sustained release pharmaceutical tablet comprising theophylline and ethyl cellulose uniformly dispersed therein in an amount of 5 to 200 parts by weight of ethyl cellulose based on 100 parts by weight of the theophylline, the hardness of the tablet bein...
09/08/1987
44953561,4-Dihydropyridine compound
1,4-Dihydropyridine compound having the general formula: ##STR1## wherein R and R' are independently a methyl, ethyl, or propyl group. This compound has a remarkable liver protective action and a low toxicity....
01/22/1985
4302357Catalyst for production of ethylene from ethanol
An activated alumina catalyst containing alkali metal, sulfur, iron and silicon in an amount of 0.05 wt. % or less respectively, calculated as Na2 O, SO3, Fe2 O3 and SiO2 and having a purity of 99.6 w...
11/24/1981
1    
 
Sign InRegister
Username  
Password   
forgot password?