Patents by Inventor Yoshiaki Sakakibara

Yoshiaki Sakakibara 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: 4915901
    Abstract: A high-purity reinforcing steel resistant to salt and capable of preventing deterioration of concrete substantially completely over a long period when the salt content of the concrete is not greater than 0.5 wt % in terms of Nacl amount in the sand of concrete. The reinforcing steel essentially consists of 0.001 to 1.0 wt % of C, less than 0.01 wt % of Si, 0.01 to 2.0 wt % of Mn, less than 0.015 wt % of P, less than 0.005 wt % of S, 0.01 to 0.5 wt % of Cu, 0.01 to 0.5 wt % of W, 0.001 to 0.10 wt % of Al and the balance Fe and incidental impurities. Disclosed also is another reinforcing steel capable of remarkably retarding deterioration of concrete even under such a severe corrosive condition that the salt content of the concrete exceeds 0.5 wt % in terms of Nacl amount in the same of concrete. This reinforcing steel essentially consists of 0.001 to 1.0 wt % of C, not greater than 0.05 wt % of Si, 0.01 to 2.0 wt % of Mn, less than 0.015 wt % of P, less than 0.005 wt % of S, 1.0 to 5.5 wt % of Ni, 0.001 to 0.
    Type: Grant
    Filed: December 2, 1985
    Date of Patent: April 10, 1990
    Assignee: Nippon Steel Corporation
    Inventors: Haruo Shimada, Yoshiaki Sakakibara, Takashi Waseda
  • Patent number: 4861548
    Abstract: A non-magnetic steel composition suitable for use in various steel and concrete structures, particularly magnetic floating high-speed railways, nuclear fusion facilities and marine structures and appliances where non-magnetic property is required. The steel composition containsC: not more than 1.0%Si: not more than 0.25%Mn: not more than 2.0%Al: more than 20.0 to 37.3%Cr: more than 1.0 to 5.5%P: not more than 0.015%S: not more than 0.005%and may further contain at least one of Ti, V, Nb, W, Mo, and B in an amount ranging from 0.01 to 0.5%, in total, for the elements other than B and in an amount ranging from 0.0001 to 0.005% for B, and at least one of Cu and Ni in an amount ranging from 0.1 to 5.5%, in total.
    Type: Grant
    Filed: January 6, 1988
    Date of Patent: August 29, 1989
    Assignee: Nippon Steel Corporation
    Inventors: Haruo Shimada, Yoshiaki Sakakibara
  • Patent number: 4844865
    Abstract: A non-magnetic steel material suitable for use in various steel and concrete structures such as magnetic floating high-speed railways, nuclear fusion facilities and marine structrures and appliances where non-magnetic properties are required. The steel composition contain (by weight):C: not more than 1.0%Si: not more than 0.25%Mn: not more than 2.0%Al: more than 20.0 to 37.3%P: not more than 0.015%S: not more than 0.005%Cr: more than 5.5 to 15.0%and may further contain at least one of Ti, V, Nb, W, Co, Mo and B in an amount ranging from 0.01 to 0.5% for the elements other than B, and in an amount ranging from 0.0001 to 0.005% for B, and at least one of Cu and Ni in an amount ranging from 0.1 to 5.5%.
    Type: Grant
    Filed: November 25, 1987
    Date of Patent: July 4, 1989
    Assignee: Nippon Steel Corporation
    Inventors: Haruo Shimada, Yoshiaki Sakakibara
  • Patent number: 4836981
    Abstract: Concrete reinforcing steel bars or wires useful for reinforcing concrete structures, such as concrete structures built on seashores and marine concrete structures, and concrete bridges, which are exposed to sea salt particles and sea-water splashes, and very excellent in preventing deteriorations or decays of these concrete structures. The steel bars or wires have the following composition,C: not more than 1.0%Si: not more than 0.25%Mn: not more than 2.0%Al: 10.0 to 20.0%CR: 0.5 to 5.5%P: not more than 0.015%S: not more than 0.005%Balance: iron and unavoidable impurities.The steel bars or wires may further contain at least one element selected from Ti, V, Nb, W, Mo or B in such amounts that the total weight range for elements other than B is 0.01 to 0.5% and in amounts ranging from 0.0001 to 0.0005% for B. The bar or wire also may optionally contain Cu and/or Ni in total amounts ranging from 0.1 to 5.5%.
    Type: Grant
    Filed: January 25, 1988
    Date of Patent: June 6, 1989
    Assignee: Nippon Steel Corporation
    Inventors: Haruo Shimada, Yoshiaki Sakakibara
  • Patent number: 4339685
    Abstract: A sealed beam lamp assembly, suitable for use as a motor vehicle headlight, has an incandescent lamp mounted within an inert-gas-filled, molded-glass housing integrally comprising a reflector and a control-lens cover. For supporting the lamp in position within the housing, a metal-made support rod extends forwardly from one of ferrules on the reflector and has its front end preformed into the shape of a U to provide a rearwardly directed fold. Welded to this fold of the support rod is a metal band rigidly encircling the base of the lamp. The lamp position relative to the reflector is therefore adjustable as required by manually turning the fold of the support rod about its main straight portion. The support rod serves also to provide electrical connection between the ferrule and one of the lamp leads.
    Type: Grant
    Filed: May 9, 1980
    Date of Patent: July 13, 1982
    Assignee: Koito Manufacturing Company, Ltd.
    Inventors: Norio Saguchi, Hideki Ishii, Yoshiaki Sakakibara, Masakazu Nagasawa, Osami Saitoh, Yukio Wakimizu, Susumu Kanematsu