公开(公告)号：US3568089A

公开(公告)日：1971-03-02

申请号：US3568089D

申请日：1968-07-08

Applicant: AGENCY IND SCIENCE TECHN

Inventor： TANAKA KEIICHI

IPC: H01S3/03 ,  H01S3/105 ,  G01B9/02

CPC classification number: H01S3/03 ,  H01S3/105

Abstract: An apparatus for use in a gas laser having internal mirrors comprising an electric discharge tube, a cathode chamber operatively connected with one end of the electric discharge tube, an anode chamber operatively connected to the other end of the discharge tube, and two reflecting mirrors one mounted on the wall of the cathode chamber and the other on the wall of the anode chamber and aligned opposite one another in the direction of the axis of the electric discharge tube. An anode means forms the wall of the anode chamber and surrounds the other end of the electric discharge tube and varies the length of the anode chamber in the axial direction. Means are provided for varying the length of the anode means.

公开(公告)号：US3906394A

公开(公告)日：1975-09-16

申请号：US44854474

申请日：1974-03-06

Applicant: AGENCY IND SCIENCE TECHN

Inventor： TANAKA KEIICHI

IPC: G02B7/00 ,  H01S3/086 ,  H01S3/139 ,  H01S3/08

CPC classification number: H01S3/139 ,  H01S3/086

Abstract: The distance between reflection mirrors of a laser resonator is finely regulated over a wide range by driving a servo-motor upon an error signal produced due to a variation of frequency of a laser beam, converting the rotational movement of the servomotor to a linear movement by using a rotation screw means, converting the linear movement to a linear fine movement by using a lever means and transmitting the linear fine movement to one of the reflection mirrors by using a spring means which exerts a linear force on the one mirror upon the linear fine movement.

Abstract translation: 激光谐振器的反射镜之间的距离通过在由于激光束的频率的变化而产生的误差信号的驱动下驱动伺服电动机而在宽范围内进行精细调节，通过将伺服电动机的旋转运动转换为线性运动， 使用旋转螺钉装置，通过使用杠杆装置将线性运动转换成线性细微运动，并且通过使用在一个反射镜上施加线性力的线性精细的弹簧装置将线性细微运动传递到反射镜之一 运动。

公开(公告)号：US3600095A

公开(公告)日：1971-08-17

申请号：US3600095D

申请日：1969-04-02

Applicant: AGENCY IND SCIENCE TECHN

Inventor： TANAKA KEIICHI

IPC: G01C19/66 ,  G01B9/02 ,  G01B11/26

CPC classification number: G01C19/66

Abstract: A differential ring laser comprising a disc on which a ring laser, an interferometer and a phototube are fixed. A second disc is arranged coaxially with the disc, under the same and provided with the same ring laser, interferometer and phototube as the disc. Means are provided for independently rotating the two discs and there is a counter for counting the difference between the number of beat waves detected by the phototubes on the two discs.

公开(公告)号：DE1466626A1

公开(公告)日：1969-01-30

申请号：DE1466626

申请日：1964-07-27

Applicant: AGENCY IND SCIENCE TECHN

Inventor： TANAKA KEIICHI

IPC: B65D5/06 ,  G01B9/02 ,  G01D5/38 ,  G01J9/02 ,  G01R25/06

公开(公告)号：DE1764652A1

公开(公告)日：1971-09-30

申请号：DE1764652

申请日：1968-07-11

Applicant: AGENCY IND SCIENCE TECHN

Inventor： TANAKA KEIICHI

IPC: H01S3/03 ,  H01S3/105 ,  H01S3/22

公开(公告)号：JPH01135842A

公开(公告)日：1989-05-29

申请号：JP29490787

申请日：1987-11-21

Applicant: AGENCY IND SCIENCE TECHN

Inventor： HISANAGA TERUAKI ,  HARADA KENJI ,  TANAKA KEIICHI ,  MASUDA HITOSHI

IPC: B01J35/02 ,  B01J31/06 ,  C08J5/18 ,  C08J9/28 ,  C08K3/00 ,  C08K3/22 ,  C08K3/28 ,  C08K3/30 ,  C08L1/00 ,  C08L1/12 ,  C08L81/00 ,  C08L81/06 ,  C08L101/00

Abstract: PURPOSE:To obtain a photocatalyst-immobilized membrane having photocatalytic function and usable in a fluid system, by immobilizing semiconductor powder to a porous polymer membrane. CONSTITUTION:Powder of a semiconductor (e.g., oxide, etc., such as titanium dioxide or cadmium sulfide) is immobilized to a porous polymer membrane (e.g., polysulfone, cellulose acetate or polyvinyl alcohol) to obtain the objective membrane. The ratio of the semiconductor to the polymer in the membrane is preferably 30-200wt.%.

公开(公告)号：JPH0975959A

公开(公告)日：1997-03-25

申请号：JP23742895

申请日：1995-09-14

Applicant: AGENCY IND SCIENCE TECHN

Inventor： TANAKA KEIICHI ,  ABE KEIJI

IPC: C02F1/32 ,  B01J21/06 ,  B01J35/02 ,  C02F1/78

Abstract: PROBLEM TO BE SOLVED: To rapidly treat a waste water having high density of contaminants while maintaining the effect to completely change org. matter into inorg. matter which is the advantage of a photocatalyst, by treating the waste water by ozone in the presence of a photocatalyst and under irradiation of light of specified or shorter wavelengths. SOLUTION: When a glass tube (d) coated with a photocatalyst is filled with a waste water, the waste water is made in contact with the photocatalyst applied on the inner surface of the glass tube (d). Also the waste water is irradiated with light of mol/l concn. is supplied and irradiated with light while ozone is introduced into the liquid by 0.5g/hr rate, 91% of the soln. can be decomposed in 15min. The photocatalyst includes titanium dioxide, zinc oxide, zirconium oxide, tungsten oxide, etc.

公开(公告)号：JPH08318166A

公开(公告)日：1996-12-03

申请号：JP12632495

申请日：1995-05-25

Applicant: AGENCY IND SCIENCE TECHN

Inventor： TANAKA KEIICHI ,  HISANAGA TERUAKI ,  CHIN INSEI

IPC: B01J21/06 ,  B01J35/00 ,  B01J35/02 ,  B01J37/02

Abstract: PURPOSE: To produce an immobilized photocatalyst having high catalyzing ability as well as high durability and to provide a method for immobilize a photocatalyst. CONSTITUTION: A powdery photocatalyst is immobilized on a support with an alkali metal silicate as a binder to obtain the objective immobilized photocatalyst whose alkali metal silicate content is 6-32 pts.wt. per 100 pts.wt. of the powdery photocatalyst. An aq. suspension contg. 100 pts.wt. powdery photocatalyst and 6-32 pts.wt. alkali metal silicate is applied to a support and hardened to immobilize the photocatalyst.

公开(公告)号：JPS6212601A

公开(公告)日：1987-01-21

申请号：JP14879985

申请日：1985-07-05

Applicant: AGENCY IND SCIENCE TECHN

Inventor： OOSAWA YOSHINAO ,  MURATA SHIGEO ,  TANAKA KEIICHI

IPC: C01B3/02 ,  C01B3/04 ,  C25B5/00 ,  C25B11/06

Abstract: PURPOSE:To efficiently produce hydrogen from hydrogen sulfide, by transferring an aqueous solution of hydrogen iodide prepared by reacting the hydrogen sulfide with iodine in water to a photoelectrolytic cell and irradiating a semiconductor photoelectrode with light. CONSTITUTION:Hydrogen sulfide gas is blown into a dispersion obtained by dispersing iodine in water to deposite and separate sulfur and to produce hydrogen iodide at the same time. The resultant hydrogen iodide solution is then fed into a photoelectrolytic cell having a semiconductor electrode (anode), which is irradiated with light to generate iodine from the anode and hydrogen from the cathode. Hydrogen sulfide is further fed into the aqueous solution of hydrogen iodide, discharged from the anodic compartment and containing iodine and reacted with the iodine and form a closed cycle. The semiconductor to be used as the photoelectrode is formed from an oxide or sulfide containing one or two or more of Ti, iron, Mo, W, Sr and Ba, Se compounds or silicon having p-n bonds.

公开(公告)号：JP2000288407A

公开(公告)日：2000-10-17

申请号：JP2000026246

申请日：2000-02-03

Applicant: AGENCY IND SCIENCE TECHN

Inventor： TANAKA KEIICHI ,  HISANAGA TERUAKI

IPC: B01D53/86 ,  B01J35/02 ,  B01J37/00 ,  C09C1/36 ,  C09D1/02

Abstract: PROBLEM TO BE SOLVED: To increase catalytic function, to eliminate the variation in the function and to improve reproductivity by applying a powdery photocatalyst together with a binder to a supporting body, curing to form a photocatalytic film and removing a part of the binder in the photocatalytic film by treating with hydrofluoric acid aq. solution having a specific concentration. SOLUTION: The photocatalytic film is formed by applying the powdery photocatalytic such as titanium oxide together with the binder to the supporting body. As the binder, an alkali metal silicate such as sodium silicate or, potassium silicate is used and an aq. solution thereof is particularly preferable. The concentration of the aq. solution is preferably 5-30 wt.%. The binder and the powdery photocatalyst are mixed and applied to the supporting body, dried and cured. The drying is performed at a room temp. and after that, firing is executed under a prescribed temp. condition. A part of the binder contained in the photocatalytic film is removed by treating with a 2-10 wt.% hydrofluoric acid aq. solution. The concentration of the hydrofluoric acid aq. solution is controlled to 2-10 wt.%, further preferably 4-6 wt.%.