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Inventor: Katsutoshi Takahashi


Address: Tokyo, JP
No. of patents: 28
Last patent issue date: 01/11/2011

NumberTitleIssue Date
7869014System for measuring the wavelength dispersion and nonlinear coefficient of an optical fiber
A method of simultaneously specifying the wavelength dispersion and nonlinear coefficient of an optical fiber. Pulsed probe light and pulsed pump light are first caused to enter an optical fiber to be measured. Then, the power oscillation of the back-scattered light...
01/11/2011
7586091Mass spectrometric system and mass spectrometry
After a sample is previously separated into plural components in a channel formed in a microchip (353), the channel is irradiated along a separation direction with a laser beam from a laser oscillator (361) to sequentially ionize each fraction separate...
09/08/2009
7424191System for measuring the wavelength dispersion and nonlinear coefficient of an optical fiber
A method of simultaneously specifying the wavelength dispersion and nonlinear coefficient of an optical fiber. Pulsed probe light and pulsed pump light are first caused to enter an optical fiber to be measured. Then, the power oscillation of the back-scattered light...
09/09/2008
7146085Method and system for measuring the wavelength dispersion and nonlinear coefficient of an optical fiber, method of manufacturing optical fibers, method of measuring wavelength-dispersion distribution, method of compensating for measurement errors, and method of specifying conditions of measurement
A method of simultaneously specifying the wavelength dispersion and nonlinear coefficient of an optical fiber. Pulsed probe light and pulsed pump light are first caused to enter an optical fiber to be measured. Then, the power oscillation of the back-scattered light...
12/05/2006
7003202Method and system for measuring the wavelength dispersion and nonlinear coefficient of an optical fiber, method of manufacturing optical fibers, method of measuring wavelength-dispersion distribution, method of compensating for measurement errors, and method of specifying conditions of measurement
A method of simultaneously specifying the wavelength dispersion and nonlinear coefficient of an optical fiber. Pulsed probe light and pulsed pump light are first caused to enter an optical fiber to be measured. Then, the power oscillation of the back-scattered light...
02/21/2006
5747502Process for preparing benzo›c!phenanthridinium derivatives, novel compounds prepared by said process, and antitumor agents
The present invention relates to benzo›c!phenanthridinium derivative of the general formula A: ##STR1## wherein M and N individually represent a hydroxyl or lower alkoxy group, or M and N simultaneously represent a hydrogen atom or together form a ...
05/05/1998
5214048Oxetanocins
This invention relates to novel oxetanocins represented by the following general formula (I): ##STR1## wherein R represents a group represented by ##STR2## and their pharmacologically acceptable salts which have antiviral activities....
05/25/1993
5179084Antiviral phosphoric acid esters of oxetanocins
The present invention relates to phosphoric acid esters of oxetanocins having an antiviral activity which are represented by general formula (I): ##STR1## wherein R1 represents a phosphoric acid ester residue, X represents hydrogen, hydrox...
01/12/1993
5128493Platinum complexes
A diamine platinum (II) complex represented by the general formula ##STR1## [wherein R1 and R2 are each a lower alkyl group; and two X's are each a halogen atom or jointly form a group represented by ##STR2## (wherein R
07/07/1992
5068376Novel platinum complexes
A diamine platinum (II) complex represented by the general formula ##STR1## wherein R1, R2, R3 and R4 are each a hydrogen atom or a lower alkyl group; and two X's are each a halogen atom or jointly form a g...
11/26/1991
5041447Oxetanocin-related compounds and pharmaceutical compositions containing them
This invention relates to oxetanocin-related compounds represented by the following formula (I): ##STR1## [in formula (I), R1, Y and B have the following meanings: (a) R1 represents --CH2 OH or --CH2 OCO-(a...
08/20/1991
4987246Novel platinum complexes
A diamine platinum (II) complex represented by the general formula ##STR1## [wherein R1 and R2 are each a lower alkyl group; and two X's are each a halogen atom or jointly form a group represented by ##STR2## (wherein R
01/22/1991
4956504Novel spergualin-related compounds and process for producing the same
The present invention relates to novel Spergualin-related compounds represented by the general formula [I] ##STR1## (wherein X is ##STR2## R is --H or --CH2 OH; R1 is --H, ##STR3## R2 is a residue obtai...
09/11/1990
4921984Novel platinum complexes
A diamine platinum (II) complex represented by the general formula ##STR1## [wherein R1, R2, R3 and R4 are each a hydrogen atom or a lower alkyl group; and two X's are each a halogen atom or jointly form a ...
05/01/1990
4864043Platinum complexes
A diamine platinum (II) complex represented by the general formula ##STR1## [wherein R1, R2, R3 and R4 are each a hydrogen atom or a lower alkyl group; and two X's are each a halogen atom or jointly form a ...
09/05/1989
4861905Platinum complexes
A diamine platinum (II) complex represented by the general formula ##STR1## [wherein R1 and R2 are each a lower alkyl group; and two X's are each a halogen atom or jointly form a group represented by ##STR2## (wherein R
08/29/1989
4824955Selenium oxy chloride-pyridine or bipyridine complexes
This invention relates to the novel selenium compounds which are useful as an antineoplastic agent. The compounds are represented by the general formula (I): wherein R, X, A and Y represent the groups specified below, a represents a number of 0 or 1, b re...
04/25/1989
4808703Novel 3-(4'-aminobutylamino) propylaminobleomycin derivatives
Disclosed is a 3-(4'-aminobutylamino) propylaminobleomycin having low pulmonary toxicity, which expressed by the following general formula wherein [BX] represents a residue remaining after removing a hydroxyl group from the carboxyl group of bleomycinic acid, ...
02/28/1989
4737589Platinum Complexes
A diamine platinum (II) complex represented by the general formula ##STR1## [wherein R1, R2, R3 and R4 are each a hydrogen atom or a lower alkyl group; and two X's are each a halogen atom or jointly form a ...
04/12/1988
4607114Novel platinum complexes
This invention relates to a novel platinum-diamine complexes represented by the general formula: ##STR1## wherein R1 and R2 each represents a lower alkyl group having 1 to 3 carbon atoms or jointly represent an alkylene group ha...
08/19/1986
4568490Aminopropylaminobleomycin derivatives and process for preparation thereof
An aminopropylaminobleomycin represented by the following formula or a salt thereof, which is minimized in side effects such as pulmonary toxicity: wherein [BX] represents the acyl group of bleomycinic acid whose formula differs from that of bleomycin acid by ...
02/04/1986
4556735Spergualin-related compounds having a phenylene group as well as a process for producing the same
The invention relates to Spergualin-related compounds of the formula: ##STR1## (wherein R1 is a lower alkylene group which may be substituted by a hydroxymethyl group; X is a hydrogen atom or a halogen atom; m and n are each 0 or an intege...
12/03/1985
4537880Aminopropylaminobleomycin derivatives and process for preparation thereof
An aminopropylaminobleomycin represented by the following formula or a salt thereof, which is minimized in side effects such as pulmonary toxicity: wherein [BX] represents the acyl group of bleomycinic acid whose formula differs from that of bleomycin acid by ...
08/27/1985
4529549Spergualin-related compounds and process for the preparation thereof
This invention relates to a novel spergualin-related compound and a process for the production thereof. The novel compound, which has a high antitumor activity, is represented by the general formula ##STR1## wherein R1 represents a hydroge...
07/16/1985
4500452(Amido)N-substituted bleomycins, salts thereof and process for preparation thereof
A promising carcinostatic (amido)N-substituted bleomycin represented by the following formula, or a salt thereof and a process for the preparation thereof: ##STR1## wherein BM represents a moiety of bleomycin skeleton; X represents an alkyl of 1...
02/19/1985
4472304(Amido)N-substituted bleomycins, salts thereof and process for preparation thereof
A promising carcinostatic (amido)N-substituted bleomycin represented by the following formula, or a salt thereof and a process for the preparation thereof: ##STR1## wherein BM represents a moiety of bleomycin skeleton; X represents an alkyl of 1...
09/18/1984
4327081Method of enhancing absorption of antitumor agent into gastro-intestinal tumor site and orally administrable antitumor compositions therefor
This invention relates to a method for selectively enhancing absorption of 5-fluorouracil, bleomycins or bleomycin derivatives into the gastrointestinal tumor site by orally administering such substance together with an alkali metal salt of polyacrylic ac...
04/27/1982
4273761Method of enhancing absorption of antitumor agent into gastrointestinal tumor site and orally administrable antitumor compositions therefor
This invention relates to a method for selectively enhancing absorption of 5-fluorouracil, bleomycins or bleomycin derivatives into the gastrointestinal tumor site by orally administering such substance together with an alkali metal salt of polyacrylic ac...
06/16/1981
 
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