Patents by Inventor Yoshiki Hanzawa

Yoshiki Hanzawa 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: 4648055
    Abstract: An electronic clinical thermometer successively stores the temperature detected at a portion of a body, and measures the time which has elapsed since start of measurement. The thermometer repeats, periodically, a process of obtaining and displaying a predicted value of a stable temperature from the detected temperature and elapsed measurement time on the basis of a stable temperature prediction function in which measurement time is a variable, the temperature prediction function defining a temperature change up to a final, stable temperature. The prediction computation is halted when, after the elapsed measurement time has exceeded a prescribed magnitude and a difference exhibited by the detected temperature corresponding to two successive points in time no longer shows an increase outside a prescribed range, the detected temperature corresponding to a present point in time exhibits a decrease outside a prescribed range when compared with the detected temperature at the preceding point in time.
    Type: Grant
    Filed: January 9, 1986
    Date of Patent: March 3, 1987
    Assignee: Terumo Corporation
    Inventors: Hideo Ishizaka, Yoshiki Hanzawa
  • Patent number: 4574359
    Abstract: An electronic clinical thermometer successively stores the temperature detected at a portion of a body, measures the time which has elapsed since start of measurement, and reads the detected temperature, corresponding to a prescribed length of past time, out of a storage to obtain a mean value during the length of past time. The thermometer repeats, at a predetermined period, a process of obtaining and displaying a predicted value of a stable temperature from the mean detected temperature and elapsed measurement time on the basis of a stable temperature prediction function in which measurement time is a variable, the temperature prediction function defining a temperature change up to a final, stable temperature.
    Type: Grant
    Filed: December 14, 1983
    Date of Patent: March 4, 1986
    Assignee: Terumo Kabushiki Kaisha
    Inventors: Hideo Ishizaka, Yoshiki Hanzawa
  • Patent number: 4509943
    Abstract: An infusion control apparatus senses drops of an infusion liquid by way of a variation in the quantity of light received from a light source after the light passes through a drop chamber. When drops of the liquid are not sensed over a predetermined period of time, a cut-off operation for closing off an infusion liquid flow passage starts and takes priority over other forms of control. When a drop-wise flow of the liquid is sensed during the cut-off operation, the flow passage closing action is interrupted and a transition is made to resume control wherein the liquid drop interval is computed from an input signal based on the variation in received light, and the liquid flow passage is adjusted so that the drop interval is made to approach a set value.
    Type: Grant
    Filed: August 3, 1982
    Date of Patent: April 9, 1985
    Assignee: Terumo Kabushiki Kaisha
    Inventor: Yoshiki Hanzawa
  • Patent number: 4452273
    Abstract: A flexible tube connected to a drop chamber is closed off by a clamping force applied by a pinch clamp. A cam which presses against the pinch clamp to initiate the drop-wise flow of a fluid forms an electrical contact with an extension of the clamp. Prior to the start of drop-wise feed when the cam and clamp are not in contact, the cam is driven toward the clamp at high speed until contact is made, at which point the drop-wise feed begins. At the instant of contact, a control signal is produced in response to which a speed changeover circuit is actuated to drive the cam at low speed, whereby control is executed in such a manner that the fluid drop rate gradually approaches a set drop rate at the low speed.
    Type: Grant
    Filed: August 12, 1982
    Date of Patent: June 5, 1984
    Assignee: Terumo Kabushiki Kaisha
    Inventors: Yoshiki Hanzawa, Takahiro Soma