Toshio Hirai

Person

Miyagi-ken, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Method for preparing eutectic ceramics
- Patent number 6,592,798
- Issue date Jul 15, 2003
- Sumitomo Coal Mining Co., Ltd.
- Mamoru Omori
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Method for producing multilayered optical filters using a genetic a...
- Patent number 6,542,876
- Issue date Apr 1, 2003
- Alps Electric Co., Ltd.
- Toshihiro Kikuchi
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Optical multilayered-film filter
- Patent number 6,115,180
- Issue date Sep 5, 2000
- Alps Electric Co., Ltd.
- Toshio Hirai
- G02 - OPTICS
Information Patent Grant
Mixed oxide composite ceramics and method of producing the same
- Patent number 5,439,853
- Issue date Aug 8, 1995
- Mamoru Omori
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Crystalline sialon having wurtzite structure
- Patent number 5,429,998
- Issue date Jul 4, 1995
- Alps Electric Co., Ltd.
- Yoshihiro Someno
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Rare earth oxide-alumina-silica sintered body and method of produci...
- Patent number 5,384,293
- Issue date Jan 24, 1995
- Mamoru Omori
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Si.sub.3 N.sub.4 -A1.sub.2 O.sub.3 composite sintered bodies and me...
- Patent number 5,173,459
- Issue date Dec 22, 1992
- Niihara; Koichi
- Koichi Niihara
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Forming die manufacturing method
- Patent number 5,164,221
- Issue date Nov 17, 1992
- Alps Electric Co., Ltd.
- Yoshihiro Someno
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Chemical vapor deposition of dense and transparent zirconia films
- Patent number 5,145,720
- Issue date Sep 8, 1992
- Sumitomo Metal Mining Co., Ltd.
- Toshio Hirai
- C30 - CRYSTAL GROWTH
Information Patent Grant
Synthesis method by plasma chemical vapor deposition
- Patent number 5,093,150
- Issue date Mar 3, 1992
- Alps Electric Co., Ltd.
- Yoshihiro Someno
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Process for preparing carbon material
- Patent number 5,093,156
- Issue date Mar 3, 1992
- Nippon Oil Company, Limited
- Seiichi Uemura
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Process for producing carbon/carbon composite having oxidation resi...
- Patent number 5,045,356
- Issue date Sep 3, 1991
- Nippon Oil Company, Limited
- Seiichi Uemura
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Method of manufacturing josephson junctions
- Patent number 4,985,117
- Issue date Jan 15, 1991
- Kabushiki Kaisha Riken
- Hideyuki Kurosawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Membrane for use in X-ray mask and method for preparing the same
- Patent number 4,940,851
- Issue date Jul 10, 1990
- Research Development Corporation of Japan
- Akira Oyobe
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Zirconia film and process for preparing it
- Patent number 4,920,014
- Issue date Apr 24, 1990
- Sumitomo Metal Mining Co., Ltd.
- Toshio Hirai
- C30 - CRYSTAL GROWTH
Information Patent Grant
Polycrystalline rhombohedral boron nitride and method of producing...
- Patent number 4,900,526
- Issue date Feb 13, 1990
- Research Development Corporation of Japan
- Toshitsugu Matsuda
- C30 - CRYSTAL GROWTH
Information Patent Grant
Transparent BN-type ceramic material and method of producing the same
- Patent number 4,772,304
- Issue date Sep 20, 1988
- Research Development Corporation of Japan
- Hiroyuki Nakae
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Method of producing a functionally gradient material
- Patent number 4,751,099
- Issue date Jun 14, 1988
- National Aerospace Laboratories of Science and Technology Agency
- Masayuki Niino
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
High strength and high hardness alumina-zirconia-silicon carbide si...
- Patent number 4,746,635
- Issue date May 24, 1988
- Kabushiki Kaisha Riken
- Sigeo Inoue
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Electrically conductive Si.sub.3 N.sub.4 --C series amorphous mater...
- Patent number 4,585,704
- Issue date Apr 29, 1986
- Toshio Hirai
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Boron nitride containing titanium nitride, method of producing the...
- Patent number 4,565,747
- Issue date Jan 21, 1986
- Research Development Corporation
- Hiroyuki Nakae
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Titanium-containing silicon nitride film bodies and a method of pro...
- Patent number 4,469,801
- Issue date Sep 4, 1984
- Hirai; Toshio
- Toshio Hirai
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Electrically conductive Si.sub.3 N.sub.4 -C series amorphous materi...
- Patent number 4,393,097
- Issue date Jul 12, 1983
- Toshio Hirai
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Super hard highly pure silicon nitrides and a process and apparatus...
- Patent number 4,340,568
- Issue date Jul 20, 1982
- The Research Institute for Iron, Steel and Other Metals of the Tohoku University
- Toshio Hirai
- C30 - CRYSTAL GROWTH
Information Patent Grant
Super hard-highly pure silicon nitrides
- Patent number 4,312,921
- Issue date Jan 26, 1982
- The Research Institute for Iron, Steel and other Metals of the Tohoku University
- Toshio Hirai
- C30 - CRYSTAL GROWTH
Information Patent Grant
Super hard-highly pure silicon nitrides, and a process and apparatu...
- Patent number 4,312,923
- Issue date Jan 26, 1982
- The Research Institute for Iron, Steel and other Metals of the Tohoku University
- Toshio Hirai
- C30 - CRYSTAL GROWTH
Information Patent Grant
Super hard highly pure silicon nitrides
- Patent number 4,312,924
- Issue date Jan 26, 1982
- The Research Institute for Iron, Steel and Other Metals of the Tohoku University
- Toshio Hirai
- C30 - CRYSTAL GROWTH
Information Patent Grant
Process for producing super hard-highly pure silicon nitrides
- Patent number 4,279,689
- Issue date Jul 21, 1981
- The Research Institute for Iron, Steel and Other Metals of the Tohoku University
- Toshio Hirai
- C30 - CRYSTAL GROWTH
Information Patent Grant
Super hard-highly pure silicon nitrides, and a process and apparatu...
- Patent number 4,224,296
- Issue date Sep 23, 1980
- The Research Institute for Iron, Steel and other Metals of the Tohoku University
- Toshio Hirai
- C30 - CRYSTAL GROWTH
Information Patent Grant
Super hard-highly pure silicon nitrides having a preferred crystal...
- Patent number 4,118,539
- Issue date Oct 3, 1978
- The Research Institute for Iron, Steel and other Metals of the Tohoku University
- Toshio Hirai
- C30 - CRYSTAL GROWTH

Toshio Hirai

Person

Patents Grantslast 30 patents

Method for preparing eutectic ceramics

Method for producing multilayered optical filters using a genetic a...

Optical multilayered-film filter

Mixed oxide composite ceramics and method of producing the same

Crystalline sialon having wurtzite structure

Rare earth oxide-alumina-silica sintered body and method of produci...

Si.sub.3 N.sub.4 -A1.sub.2 O.sub.3 composite sintered bodies and me...

Forming die manufacturing method

Chemical vapor deposition of dense and transparent zirconia films

Synthesis method by plasma chemical vapor deposition

Process for preparing carbon material

Process for producing carbon/carbon composite having oxidation resi...

Method of manufacturing josephson junctions

Membrane for use in X-ray mask and method for preparing the same

Zirconia film and process for preparing it

Polycrystalline rhombohedral boron nitride and method of producing...

Transparent BN-type ceramic material and method of producing the same

Method of producing a functionally gradient material

High strength and high hardness alumina-zirconia-silicon carbide si...

Electrically conductive Si.sub.3 N.sub.4 --C series amorphous mater...

Boron nitride containing titanium nitride, method of producing the...

Titanium-containing silicon nitride film bodies and a method of pro...

Electrically conductive Si.sub.3 N.sub.4 -C series amorphous materi...

Super hard highly pure silicon nitrides and a process and apparatus...

Super hard-highly pure silicon nitrides

Super hard-highly pure silicon nitrides, and a process and apparatu...

Super hard highly pure silicon nitrides

Process for producing super hard-highly pure silicon nitrides

Super hard-highly pure silicon nitrides, and a process and apparatu...

Super hard-highly pure silicon nitrides having a preferred crystal...