Patents by Inventor Akifumi Iwama

Akifumi Iwama 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).

  • Publication number: 20100196216
    Abstract: A sterilizing material supply apparatus has a sterilizing material gas generator including a mist generation unit and a vaporizing unit. In the mist generation unit, hydrogen peroxide solution in a cup is converted into a mist by ultrasonic vibration generated by an ultrasonic vibrator. The hydrogen peroxide solution which has been turned into the mist is heated by a heater in the vaporizing unit so as to be gasified. The gasified hydrogen peroxide solution is supplied to a workroom of an isolator as a sterilizing gas.
    Type: Application
    Filed: February 1, 2010
    Publication date: August 5, 2010
    Inventors: Yasuhiko YOKOI, Jiro Ohnishi, Akifumi Iwama, Masaki Harada, Yoshiaki Noguchi
  • Publication number: 20100189607
    Abstract: An isolator includes a workroom having a first sterilizing material supply port, a first sterilizing material discharge port, a first gas supply port and a first gas discharge port, a sterilization chamber having a second sterilizing material supply port, a second sterilizing material discharge port, a second gas supply port and a second gas discharge port, a sterilizing material supply unit, a first sterilizing material supply path connecting the sterilizing material supply unit to the first sterilizing material supply port, a second sterilizing material supply path connecting the sterilizing material supply unit to the second sterilizing material supply port, a first circulating path connecting the first sterilizing material discharge port to the sterilizing material supply unit, a second circulating path connecting the second sterilizing material discharge port to the sterilizing material supply unit, a first gas supply path, a second gas supply path, a first gas discharge path, a second gas discharge path
    Type: Application
    Filed: January 26, 2010
    Publication date: July 29, 2010
    Inventors: Yasuhiko Yokoi, Jiro Ohnishi, Shinji Fukui, Akifumi Iwama
  • Publication number: 20100112677
    Abstract: Provided is a sterile environment maintaining apparatus capable of sterilizing a sterile room in a shorter time than conventional ones. The sterile environment maintaining apparatus according to the present invention comprises a sterile room 10 having an inlet opening 11 and an outlet opening 12, a HEPA filter 3 placed so as to cover the inlet opening 11 or the inlet opening 11 and the outlet opening 12 of the sterile room 10, and a sterilizing material supplying part supplying a sterilizing material such as hydrogen peroxide to the sterile room 10, and the sterile room 10 is provided with a detoxifying material supplying part spraying a detoxifying material such as ozone toward the HEPA filter 3.
    Type: Application
    Filed: March 27, 2008
    Publication date: May 6, 2010
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Jiro Onishi, Yasuhiko Yokoi, Akifumi Iwama
  • Publication number: 20090155891
    Abstract: There is provided an apparatus for detecting a nucleic acid amplification product in real time, which is capable of effectively excluding or reducing apparatus error factors without using a second fluorescence signal used for correction. A plurality of wells 7A are given with temperature cycles and fluorescence strength from a nucleic acid amplification product is detected in real time in each well 7A. A fluorescence measurement value [DNA]raw obtained from the well 7A and a fluorescence measurement value [DNA]bg obtained from a-connection wall near the well 7A are detected, and the fluorescence measurement value [DNA]bg is subtracted from the fluorescence measurement value [DNA]raw to determine fluorescence strength [DNA]real of the well 7A.
    Type: Application
    Filed: March 1, 2007
    Publication date: June 18, 2009
    Inventors: Yuichi Tamaoki, Akifumi Iwama, Yasuaki Sonoda
  • Publication number: 20080128272
    Abstract: An object is to provide an air bacteria removal device in which leakage of electrolytic water to the outside is eliminated as much as possible and in which maintenance can easily be performed, the air bacteria removal device comprises a main body including a water storage section having a sealed or semi-sealed structure in which the electrolytic water is stored, and a water absorption member for supplying the electrolytic water from the water storage section to an air-liquid contact member by use of a capillary phenomenon, the air-liquid contact member and the water absorption member are integrated and detachably attached to the main body, the water absorption member attached to this main body enters the water storage section, and is submerged into the electrolytic water, and the water storage section is brought into a sealed or semi-sealed state.
    Type: Application
    Filed: October 24, 2007
    Publication date: June 5, 2008
    Inventors: Yasuaki Sonoda, Haruki Minoshima, Akifumi Iwama, Ichiro Tateno, Masafumi Nakanishi, Kenzo Kano, Akiyoshi Ando, Shinichi Kozuka
  • Publication number: 20050250176
    Abstract: The present invention has an object to provide a simple detecting device and a simple detecting method, to shorten the time for detection, and to improve sensitivity of detection, particularly for gram negative bacteria. The microorganisms detecting device includes a sampling section for taking a sample from a detection target, a sample concentrating section for concentrating microorganisms in the sample, a reagent adding section for adding a reagent which changes the reagent color tone by existence of the microorganisms to the sample, and a microorganisms detecting section for detecting the change of the color tone of the regent by means of an optical system, thereby shortening the time for detection and improving the sensitivity of detection by concentrating the microorganisms in the sample.
    Type: Application
    Filed: April 27, 2005
    Publication date: November 10, 2005
    Inventors: Eiji Kono, Hironobu Sekine, Yasuhiko Yokoi, Akifumi Iwama
  • Publication number: 20030108865
    Abstract: A microbe analyzing system for analyzing a DNA and identifying the microbe in a sample. The user amplifies a DNA fragment of a microbe in a sample by the PCR method, creates electrophoresis data, sends the electrophoresis data from client computers (12, 14) through a communication network (10) to a server computer (16). The server computer (16) accesses a database (16a) where electrophoresis data set of each microbe is stored, extracts the relevant microbe, and sends the result to the client computers (12, 14). The user is not required to send a sample to an analyzing company and can quickly identify the microbe on the basis of electrophoresis data.
    Type: Application
    Filed: December 27, 2002
    Publication date: June 12, 2003
    Inventors: Takakazu Inoue, Tatsuhiko Sekiguchi, Kouta Fujimura, Akifumi Iwama
  • Patent number: 5770038
    Abstract: A method for detecting and identifying a chemical substance in various phases such as a vapor phase and a liquid phase. The chemical substance being measured is diffused into a predetermined phase. Then, an electric state at an electrode existing in the predetermined phase is detected as a change with time based on the diffusion and absorption of the chemical substance on the electrode. A pattern of the change of the electric state with time is prepared. A fitting function based on the pattern is set and parameters of the chemical substance being measured are found. A distance between the parameters of the chemical substance being measured and parameters of the reference substance which is detected is determined.
    Type: Grant
    Filed: May 20, 1996
    Date of Patent: June 23, 1998
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Akifumi Iwama, Masahiro Iseki, Azusa Nakagawa, Yukihiro Sugiyama
  • Patent number: 5545299
    Abstract: On the bottom face of a measurement section, measurement electrodes and a reference electrode are formed and a solution supply pipe is opened. Then, if a predetermined electrolytic solution is supplied from the solution supply pipe, the electrolytic solution can be held on an electrolytic solution holding surface on the lower end of the measurement section, utilizing the with surface tension thereof for providing a gas reception portion. Since the electrolytic solution is exposed directly to the air, substances in a vapor phase (particularly, odor substances) are diffused into the electrolytic solution, causing an electric state to change. The substances in the vapor phase can be detected by detecting the electric state change. The electrolytic solution held on the lower face of the measurement section can be updated by further supplying more electrolytic solution.
    Type: Grant
    Filed: November 21, 1995
    Date of Patent: August 13, 1996
    Assignee: Sanyo Electric Co., Inc.
    Inventors: Akifumi Iwama, Masahiro Iseki, Azusa Nakagawa
  • Patent number: 5496451
    Abstract: On the bottom face of a measurement section, measurement electrodes and a reference electrode are formed and a solution supply pipe is opened. Then, if a predetermined electrolytic solution is supplied from the solution supply pipe, the electrolytic solution can be held on an electrolytic solution holding surface on the lower end of the measurement section, utilizing the surface tension thereof for providing a gas reception portion. Since the electrolytic solution is exposed directly to the air, substances in a vapor phase (particularly, odor substances) are diffused into the electrolytic solution, causing an electric state to change. The substances in the vapor phase can be detected by detecting the electric state change. The electrolytic solution held on the lower face of the measurement section can be updated by further supplying more electrolytic solution.
    Type: Grant
    Filed: September 13, 1994
    Date of Patent: March 5, 1996
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Akifumi Iwama, Masahiro Iseki, Azusa Nakagawa