Patents by Inventor Kazuhiko Nagata
Kazuhiko Nagata has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 7735129Abstract: A firewall apparatus including plural virtual firewalls, each virtual firewall including a dependent firewall policy, is disclosed. The firewall apparatus includes: a distribution management table for managing a user name and a virtual firewall ID; a part configured to receive authentication information for network connection from a user terminal, and hold a user name included in the authentication information; a part configured to report the authentication information to the authentication server; and a part configured to receive an authentication response from the authentication server, and hold a user ID, included in the authentication response, to be provided to the user terminal. The firewall apparatus registers the user ID in the distribution management table associating the user ID with the user name.Type: GrantFiled: February 4, 2004Date of Patent: June 8, 2010Assignee: Nippon Telegraph and Telephone CorporationInventors: Kazuhiko Nagata, Taisuke Oka, Ryoichi Suzuki, Takashi Ikegawa, Hiroyuki Ichikawa, Tadashi Ishikawa
-
Publication number: 20060143699Abstract: A firewall apparatus including plural virtual firewalls, each virtual firewall including a dependent firewall policy, is disclosed. The firewall apparatus includes: a distribution management table for managing a user name and a virtual firewall ID; a part configured to receive authentication information for network connection from a user terminal, and hold a user name included in the authentication information; a part configured to report the authentication information to the authentication server; and a part configured to receive an authentication response from the authentication server, and hold a user ID, included in the authentication response, to be provided to the user terminal. The firewall apparatus registers the user ID in the distribution management table associating the user ID with the user name.Type: ApplicationFiled: February 4, 2004Publication date: June 29, 2006Applicant: Nippon Telegraph And Telephone CorporationInventors: Kazuhiko Nagata, Taisuke Oka, Ryoichi Suzuki, Takashi Ikegawa, HIroyuki Ichikawa, Tadashi Ishikawa
-
Patent number: 5902730Abstract: A reagent for calcium ion level determination comprising a phospholipid, phospholipase D, choline oxidase, a surfactant and a divalent metal salt. The reagent can easily be prepared and with which quantitative determination of calcium ion can be made over a broad range of a calcium ion concentration with ease and accuracy in a continuous manner.Type: GrantFiled: April 29, 1993Date of Patent: May 11, 1999Assignee: Unitika Ltd.Inventors: Tatsuya Mihara, Hitoshi Kondo, Kazuhiko Nagata
-
Patent number: 5766354Abstract: A spin-coating device comprises; a turntable for concentrically supporting a substrate; a spindle motor for rotating the turntable about a central axis thereof and connected via a rotating shaft thereto; a supply mechanism for feeding and dripping a fluid coating material onto the substrate; and a holding mechanism for maintaining that the central axis of rotation of the turntable carrying the substrate is placed to be inclined at a predetermined angle with respect to a gravitational direction while the fluid coating material is dripped onto the rotating substrate.Type: GrantFiled: December 12, 1996Date of Patent: June 16, 1998Assignees: Pioneer Electronic Corporation, Pioneer Video CorporationInventors: Kazunori Ohmori, Kazuhiko Nagata, Hiroyuki Kosaka, Goroku Kitta, Kazumi Kuriyama
-
Patent number: 5683889Abstract: The present invention relates to a reagent for measurement of magnesium ions utilizing a complex of magnesium ion with adenosine 5'-triphosphate as a substrate of glucokinase derived from bacteria of the genus Zymomonas. By using this reagent, enough measuring range to measure a magnesium ion in various samples such as biological fluids, foodstuffs, etc. can be accomplished and, at the same time, the measurement can be made with high precision and reliability even in a sample containing a magnesium ion in low concentration. Further, the reagent of the present invention is superior in operation property by reducing a dilution operation, and has sufficient performance for a routine method for determination of magnesium ions.Type: GrantFiled: September 23, 1993Date of Patent: November 4, 1997Assignees: Iatron Laboratories, Inc., Unitika, Ltd.Inventors: Hitoshi Kondou, Kazuhiko Nagata, Kazue Kawahara
-
Patent number: 5243027Abstract: A method of preparing an angiotensin converting enzyme inhibitor having the amino acid sequence selected from the group consisting of:Gly-Lys-Glu-Ile-Ile-Val-Lys-Ala-Glu-Arg (SEQ ID No: 1),Gly-Lys-Met-Val-Lys-Val-Val-Ser-Trp-Tyr (SEQ ID No: 2) andAla-Tyr-Ile-Ala-Ser-Lys-Gly-Leu (SEQ ID No: 3); which comprises the steps of:(a) disrupting bacteria to obtain a cell extract, wherein the disruption is at least one of mechanical and chemical disruption;(b) exposing said cell extract to an acid mixture comprising acetic acid and hydrochloric acid, wherein said acid mixture comprises acetic acid in a concentration of 0.01 to 10M and hydrochloric acid in a concentration of 1 to 100 mM, to produce an acid hydrolysate; and(c) purifying from said acid hydrolysate a peptide having the amino acid sequence selected from the group consisting of:Gly-Lys-Glu-Ile-Ile-Val-Lys-Ala-Glu-Arg (SEQ ID No: 1),Gly-Lys-Met-Val-Lys-Val-Val-Ser-Trp-Tyr (SEQ ID No: 2) andAla-Tyr-Ile-Ala-Ser-Lys-Gly-Leu (SEQ ID No: 3).Type: GrantFiled: July 31, 1991Date of Patent: September 7, 1993Assignee: Unitika, Ltd.Inventors: Tsutomu Mimura, Yasuhiro Kohama, Kazuhiko Nagata, Ryoichi Tsurutani
-
Patent number: 5126245Abstract: A reagent for assaying .gamma.-glutamyltranspeptidase (.gamma.-GTP) which contains an amino acid dehydrogenase and a substrate specific to .gamma.-glutamyltranspeptidase activity. The reagent can be used to assay the .gamma.-GTP activity directly from the continuous course of reaction without using a standard substance with known activity. The procedure required is simple and easy, and the reagent is capable of determining .gamma.-GTP activity with good accuracy and without being affected by interfering substances, making it satisfactory for routine use in clinical laboratories.Type: GrantFiled: October 7, 1987Date of Patent: June 30, 1992Assignee: Unitika Ltd.Inventors: Akio Motoyama, Hitoshi Kondo, Takanari Shiraishi, Kazuhiko Nagata, Kosuke Tomita
-
Patent number: 5098887Abstract: An angiotensin converting enzyme inhibitor containing Gly-Lys-Glu-Ile-Ile-Val-Lys-Ala-Glu-Arg (SEQ ID No: 1) Gly-Lys-Met-Val-Lys-Val-Val-Ser-Trp-Tyr (SEQ ID No: 2) or Ala-Tyr-Ile-Ala-Ser-Lys-Gly-Leu (SEQ ID No: 3) as an active component.Type: GrantFiled: February 26, 1991Date of Patent: March 24, 1992Assignee: Unitika Ltd.Inventors: Tsutomu Mimura, Yasuhiro Kohama, Kazuhiko Nagata, Ryoichi Tsurutani
-
Patent number: 5002455Abstract: A flow processing system for processing disc-shaped articles such as discs to be used to produce video or audio disc masters, whereby a plurality of processing units for performing respectively different processing operations are combined into a single system in which each disc is moved only horizontally and in a continuously rotating condition, both during processing and while being moved between the processing units. In addition, the supporting structure of the processing units is implemented such as to produce no disturbances in a horizontally directed dust-excluding flow of air, to ensure maximum prevention of adherence of dust particles to the disc surfaces.Type: GrantFiled: October 2, 1989Date of Patent: March 26, 1991Assignee: Pioneer Electronic CorporationInventors: Kazumi Kuriyama, Yutaka Takasu, Shigeru Kono, Chiharu Koshio, Kazuhiko Nagata
-
Patent number: 4865445Abstract: An apparatus for detecting faults on the surface of a resist master disc and for measuring the thickness of the resist coating layer includes a single light source for generating a laser beam for inspection of the master disc, a first separator for separating the laser beam into a first laser beam which is used for the detection of faults, and a second laser beam which is used to measure the thickness of the resist coating layer. The second laser beam is further separated into two laser beams one of which is irradiated on the surface of the resist coated master disc at a given angle of incidence.Type: GrantFiled: September 10, 1987Date of Patent: September 12, 1989Assignee: Pioneer Electronic CorporationInventors: Kazumi Kuriyama, Shigeru Kono, Yutaka Takasu, Chiharu Koshio, Kazuhiko Nagata
-
Patent number: 4850791Abstract: A flow processing system for processing disc-shaped articles such as discs to be used to produce video or audio disc masters, whereby a plurality of processing units for performing respectively different processing operations are combined into a single system in which each disc is moved only horizontally and in a continuously rotating condition, both during processing and while being moved between the processing units. In addition, the supporting structure of the processing units is implemented such as to produce no disturbances in a horizontally directed dust-excluding flow of air, to ensure maximum prevention of adherence of dust particles to the disc surfaces.Type: GrantFiled: September 10, 1987Date of Patent: July 25, 1989Assignee: Pioneer Electronic CorporationInventors: Kazumi Kuriyama, Yutaka Takasu, Shigeru Kono, Chiharu Koshio, Kazuhiko Nagata
-
Patent number: 4584272Abstract: A heat-resistant adenylate kinase is described whose activity after an incubation in a buffer solution at about 50.degree. C. for about 15 minutes is at least about 80% of the original activity prior to the incubation. This adenylate kinase can be obtained by cultivating a bacterium belonging to the genus Bacillus and collecting adenylate kinase from the resulting culture broth. This heat-resistant enzyme is very stable against heat and, therefore, after isolation, it can be stored for a long period of time compared with the conventional adenylate kinase.Type: GrantFiled: October 7, 1981Date of Patent: April 22, 1986Assignees: Unitika Ltd., Rikagaku Kenkyusho, Kazutomo ImahoriInventors: Kazutomo Imahori, Hiroshi Nakajima, Kazuhiko Nagata
-
Patent number: 4331762Abstract: Strain UK 788 (FERM-P No. 5141) that belongs to Bacillus stearothermophilus, the cell of which is longer than about 10 microns and which permits easier release of intracellular components than a type culture Bacillus stearothermophilus, IAM 11001 is disclosed. Also, a process for producing a useful enzyme selected from the group consisting of a heat-resistant polynucleotide phosphorylase, heat-resistant maleate dehydrogenase, heat-resistant glucokinase, heat-resistant glucose-6-phosphate dehydrogenase and heat-resistant pyruvate kinase by culturing such UK 788 and recovering the desired enzyme from the culture is disclosed. Since the cell of the strain UK 788 is easy to settle and its membrane is also easy to break, the useful enzymes mentioned above can be efficiently produced on an industrial scale.Type: GrantFiled: November 21, 1980Date of Patent: May 25, 1982Assignee: Unitika Ltd.Inventors: Hiroshi Nakajima, Kazuhiko Nagata, Masao Kageyama, Toyohiko Suga, Tadao Suzuki, Kenzo Motosugi
-
Patent number: D251294Type: GrantFiled: July 19, 1977Date of Patent: March 13, 1979Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Shuzo Horikoshi, Ken Kawamura, Kazuhiko Nagata
-
Patent number: D251424Type: GrantFiled: July 25, 1977Date of Patent: March 27, 1979Assignee: Matsushita Electric Industrial Co., Ltd.Inventor: Kazuhiko Nagata
-
Patent number: D258057Type: GrantFiled: October 25, 1978Date of Patent: January 27, 1981Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Mitsuo Takanaga, Yasunobu Nakamura, Kazuhiko Nagata, Kenji Nishiyama
-
Patent number: D264584Type: GrantFiled: April 24, 1980Date of Patent: May 25, 1982Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kazuhiko Nagata, Kenji Nishiyama, Shinji Makino, Mitsuo Takanaga
-
Patent number: D264585Type: GrantFiled: April 25, 1980Date of Patent: May 25, 1982Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Mitsuo Takanaga, Kazuhiko Nagata, Kenji Nishiyama, Shinji Makino
-
Patent number: D275389Type: GrantFiled: February 26, 1982Date of Patent: September 4, 1984Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Mitsuo Takanaga, Kazuhiko Nagata, Shinji Makino, Yoshihisa Takaichi
-
Patent number: D294574Type: GrantFiled: June 7, 1985Date of Patent: March 8, 1988Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Mitsuo Takanaga, Kazuhiko Nagata