Masao Koyama

Person

Kanagawa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Tetrahydrobenzindole derivatives
- Patent number 6,498,251
- Issue date Dec 24, 2002
- Meiji Seika Kaisha, Ltd.
- Chika Kikuchi
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Optically active tetrahydrobenzindole derivative
- Patent number 6,407,112
- Issue date Jun 18, 2002
- Meiji Seika Kaisha, Ltd.
- Masao Koyama
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Tetrahydrobenzindole compounds
- Patent number 6,355,642
- Issue date Mar 12, 2002
- Meiji Seika Kaisha, Ltd.
- Masao Koyama
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Processing apparatus, processing system and processing method
- Patent number 6,332,909
- Issue date Dec 25, 2001
- Kabushiki Kaisha Toshiba
- Kouichi Teshima
- B09 - DISPOSAL OF SOLID WASTE RECLAMATION OF CONTAMINED SOIL SOIL
Information Patent Grant
Method and apparatus for pyrolytically decomposing waste plastic
- Patent number 6,172,275
- Issue date Jan 9, 2001
- Kabushiki Kaisha Toshiba
- Masahiro Tadauchi
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Derivatives of cyclodepsipeptide PF 1022
- Patent number 5,747,448
- Issue date May 5, 1998
- Meiji Seika Kaisha, Ltd.
- Makoto Ohyama
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method of inhibiting tumor growth using xanthocillin X dimethylether
- Patent number 5,312,833
- Issue date May 17, 1994
- Meiji Seika Kaisha, Ltd.
- Tsutomu Tsuruoka
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Xanthocillin X monomethyl ether derivative and antitumor agent cont...
- Patent number 5,210,097
- Issue date May 11, 1993
- Meiji Seika Kaisha Ltd.
- Hiroshi Kurihara
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Antibiotic pyridine compound
- Patent number 5,164,507
- Issue date Nov 17, 1992
- Meiji Seika Kaisha Ltd.
- Toru Sasaki
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Derivatives of chrysophanol as topoisomerase II inhibitors
- Patent number 5,053,431
- Issue date Oct 1, 1991
- Sloan-Kettering Institute for Cancer Research
- Kyoichi A. Watanabe
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Sulfonyl derivatives of an antibiotic substance isolated from strep...
- Patent number 5,037,993
- Issue date Aug 6, 1991
- Meiji Seika Kaisha Ltd.
- Kazunori Ohba
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Certain anti-tumor duocarmycin antibiotics from streptomyces
- Patent number 4,994,578
- Issue date Feb 19, 1991
- Meiji Seika Kaisha, Ltd.
- Kazunori Ohba
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Derivatives of chryosphanol
- Patent number 4,966,918
- Issue date Oct 30, 1990
- Sloan-Kettering Institute for Cancer Research
- Kyoichi A. Watanabe
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Field-effect transistor-type semiconductor sensor
- Patent number 4,961,833
- Issue date Oct 9, 1990
- Kabushiki Kaisha Toshiba
- Tadashi Sakai
- G01 - MEASURING TESTING
Information Patent Grant
Fluorophthalimides and agricultural and horticultural fungicides co...
- Patent number 4,839,378
- Issue date Jun 13, 1989
- Meiji Seika Kabushiki Kaisha
- Masao Koyama
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Ion selective electrode and flow type ion sensor using the same
- Patent number 4,758,325
- Issue date Jul 19, 1988
- Kabushiki Kaisha Toshiba
- Ken-ichi Kanno
- G01 - MEASURING TESTING
Information Patent Grant
Polymeric piezoelectric ultrasonic probe
- Patent number 4,651,310
- Issue date Mar 17, 1987
- Kabushiki Kaisha Toshiba
- Nagao Kaneko
- B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
Information Patent Grant
Iodoallyl and iodopropargyl substituted tetrazoles and anti-microbi...
- Patent number 4,647,572
- Issue date Mar 3, 1987
- Meiji Seika Kaisha, Ltd.
- Shigeharu Inouye
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method and apparatus for measuring halogen ion concentration
- Patent number 4,619,739
- Issue date Oct 28, 1986
- Kabushiki Kaisha Toshiba
- Ken-ichi Kanno
- G01 - MEASURING TESTING
Information Patent Grant
Iodoallyl and iodopropargyl substituted tetrazoles and anti-microbi...
- Patent number 4,563,472
- Issue date Jan 7, 1986
- Meiji Seika Kaisha, Ltd.
- Shigeharu Inouye
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Antibiotic pyrrolomycin E
- Patent number 4,495,358
- Issue date Jan 22, 1985
- Meiji Seika Kaisha, Ltd.
- Masao Koyama
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Regeneration method of ion-selective electrode, and ion-selective e...
- Patent number 4,409,088
- Issue date Oct 11, 1983
- Tokyo Shibaura Denki Kabushiki Kaisha
- Ken-ichi Kanno
- G01 - MEASURING TESTING
Information Patent Grant
Electrochemical measuring apparatus provided with an enzyme electrode
- Patent number 4,388,166
- Issue date Jun 14, 1983
- Tokyo Shibaura Denki Kabushiki Kaisha
- Shuichi Suzuki
- C12 - BIOCHEMISTRY BEER SPIRITS WINE VINEGAR MICROBIOLOGY ENZYMOLOGY MUTATION...
Information Patent Grant
Process for the preparation of 7-acylamida-3-halo-3-alkyl-cepham-4-...
- Patent number 4,128,714
- Issue date Dec 5, 1978
- Meiji Seika Kaisha Ltd.
- Masao Koyama
- C07 - ORGANIC CHEMISTRY

Masao Koyama

Person

Patents Grantslast 30 patents

Tetrahydrobenzindole derivatives

Optically active tetrahydrobenzindole derivative

Tetrahydrobenzindole compounds

Processing apparatus, processing system and processing method

Method and apparatus for pyrolytically decomposing waste plastic

Derivatives of cyclodepsipeptide PF 1022

Method of inhibiting tumor growth using xanthocillin X dimethylether

Xanthocillin X monomethyl ether derivative and antitumor agent cont...

Antibiotic pyridine compound

Derivatives of chrysophanol as topoisomerase II inhibitors

Sulfonyl derivatives of an antibiotic substance isolated from strep...

Certain anti-tumor duocarmycin antibiotics from streptomyces

Derivatives of chryosphanol

Field-effect transistor-type semiconductor sensor

Fluorophthalimides and agricultural and horticultural fungicides co...

Ion selective electrode and flow type ion sensor using the same

Polymeric piezoelectric ultrasonic probe

Iodoallyl and iodopropargyl substituted tetrazoles and anti-microbi...

Method and apparatus for measuring halogen ion concentration

Iodoallyl and iodopropargyl substituted tetrazoles and anti-microbi...

Antibiotic pyrrolomycin E

Regeneration method of ion-selective electrode, and ion-selective e...

Electrochemical measuring apparatus provided with an enzyme electrode

Process for the preparation of 7-acylamida-3-halo-3-alkyl-cepham-4-...