Patents by Inventor Naoaki Hamada

Naoaki Hamada 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).

  • Stainless-steel floor and method of constructing the stainless-steel floor
    Patent number: 6745528
    Abstract: A method of constructing a stainless-steel floor on a floor bed includes providing support members on the floor bed, placing a stainless-steel plate on the support members; and bonding the stainless-steel plate to the floor bed by using mortar to fill the space between the stainless-steel plate and the floor bed, or by using adhesive.
    Type: Grant
    Filed: June 7, 2002
    Date of Patent: June 8, 2004
    Assignee: Kajima Corporation
    Inventors: Mitsuru Morita, Yuichi Izaki, Akio Tomita, Hiroshi Imai, Kansuke Honma, Hideyuki Meguro, Katsumi Kawamoto, Norihiro Nagao, Nobutaka Sugano, Kyoya Tanaka, Osamu Takesita, Naoaki Hamada
  • Stainless-steel floor and method of constructing the stainless-steel floor
    Publication number: 20030226333
    Abstract: A method of constructing a stainless-steel floor on a floor bed includes providing support members on the floor bed, placing a stainless-steel plate on the support members; and bonding the stainless-steel plate to the floor bed by using mortar to fill the space between the stainless-steel plate and the floor bed, or by using adhesive.
    Type: Application
    Filed: June 7, 2002
    Publication date: December 11, 2003
    Applicant: KAJIMA CORPORATION
    Inventors: Mitsuru Morita, Yuichi Izaki, Akio Tomita, Hiroshi Imai, Kansuke Honma, Hideyuki Meguro, Katsumi Kawamoto, Norihiro Nagao, Nobutaka Sugano, Kyoya Tanaka, Osamu Takesita, Naoaki Hamada
  • Surveying instrument and a method for drive control thereof
    Patent number: 6604293
    Abstract: A surveying instrument assumes either a high-speed drive control mode for driving a surveying optical system at high speed or a low-speed drive control mode for driving the surveying optical system at low speed. A motor is continuously driven through a PWM control method in the high-speed drive control mode. Then, the low-speed drive control mode is selected to drive the motor so as to allow the motor to alternate acceleration and a virtual stop. As the surveying optical system approaches a predetermined position, a condition for next motor acceleration is set based upon the detected rotational angle of the surveying optical system. Thus, it becomes possible to stop the surveying optical system at the predetermined position with a high degree of accuracy.
    Type: Grant
    Filed: March 27, 2002
    Date of Patent: August 12, 2003
    Assignees: Nikon Geotecs Co., Ltd., Nikon Corporation
    Inventor: Naoaki Hamada
  • Surveying instrument and a method for drive control thereof
    Publication number: 20020138998
    Abstract: A surveying instrument assumes either a high-speed drive control mode for driving a surveying optical system at high speed or a low-speed drive control mode for driving the surveying optical system at low speed. A motor is continuously driven through a PWM control method in the high-speed drive control mode. Then, the low-speed drive control mode is selected to drive the motor so as to allow the motor to alternate acceleration and a virtual stop. As the surveying optical system approaches a predetermined position, a condition for next motor acceleration is set based upon the detected rotational angle of the surveying optical system. Thus, it becomes possible to stop the surveying optical system at the predetermined position with a high degree of accuracy.
    Type: Application
    Filed: March 27, 2002
    Publication date: October 3, 2002
    Applicant: NIKON GEOTECS CO., LTD.
    Inventor: Naoaki Hamada