Patents Assigned to National Institute for Land and Infrastructure Management, Ministry of Land, Infrastructure and Transport
  • Security method for vehicle safe driving support system
    Patent number: 6922136
    Abstract: A security method for a vehicle safe driving system provides drivers information for safe driving, that is, when a sensor does not detect any danger when there is a danger on the road, when there are some limits in the system operations, or when a portion of the system does not work.
    Type: Grant
    Filed: February 27, 2003
    Date of Patent: July 26, 2005
    Assignee: National Institute for Land and Infrastructure Management, Ministry of Land, Infrastructure and Transport
    Inventors: Makio Komada, Makoto Ishizaka, Masateru Suzuki, Ryoichi Kurata, Masato Maeda
  • High performance fiber reinforced cementitious composition and premix therefor
    Patent number: 6818056
    Abstract: To provide a high ductility to tensile load and compressive load and to enhance workability, the present invention provides a high performance fiber reinforced cementitious composition comprising fragments of a steel cord stranded wire accounting for 0.5 vol % or more and less than 1.5 vol % and fragments of at least one type of organic fibers accounting for 2.5 vol % or less.
    Type: Grant
    Filed: June 5, 2003
    Date of Patent: November 16, 2004
    Assignees: Building Research Institute, Director General of National Institute for Land and Infrastructure Management, Ministry of Land, Infrastructure and Transport, Tokyo Rope Mfg. Co. Ltd.
    Inventors: Hirozo Mihashi, Hiroshi Fukuyama, Haruhiko Suwada, Tooru Tanaka
  • On-road reference point positional data delivery device
    Patent number: 6728629
    Abstract: The on-road reference point positional data delivery device according to the present invention has a reference point positional data delivery device, and this reference point positional data delivery device has a beacon identification device for indicating a reference point position for service information delivered from a beacon provided on a road to a vehicle and also selecting the beacon delivering the service information from among a plurality of beacons.
    Type: Grant
    Filed: November 16, 2001
    Date of Patent: April 27, 2004
    Assignee: National Institute for Land and Infrastructure Management, Ministry of Land, Infrastructure and Transport
    Inventors: Kenichiro Oka, Hiroyoshi Suzuki
  • Traveling support information processing system
    Patent number: 6594577
    Abstract: A traveling support information processing unit which can prevent willful assessment of information by a device installed on a road or loaded in a vehicle and makes it possible for the device to always issue a demand for acquisition of required information or a demand for consultation for cooperated determination, and which does not require any specific and additional device for acquisition of positional information for each vehicle and also can improve safety and efficiency in road utilization. In a computer system, vehicles 114A to 114C, 115C, and 115D with the behaviors on a road such as acceleration, deceleration, and lane change projected are made to run on a road 113 simulating the road structure. Communication is performed between a function 101 for tracking or projecting behaviors of the vehicle and the vehicles 115A, 115B having a communicating function.
    Type: Grant
    Filed: December 20, 2001
    Date of Patent: July 15, 2003
    Assignee: National Institute For Land and Infrastructure Management, Ministry of Land, Infrastructure and Transport
    Inventors: Norihiro Nakajima, Kazunori Takahashi, Ryo Yumiba, Takeshi Shima