Patents by Inventor Hiroshi Nomachi

Hiroshi Nomachi 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).

  • Admixture for concrete mixes
    Patent number: 5350450
    Abstract: A method for applying a cementitious composition to a surface comprising1) adding to the cementitious compositiona) a set retarding agent;b) a cement quick-setting agent;c) a cement dispersing agent;d) a slow release dispersing agent, that hydrolyzes under alkaline conditions to form a dispersing agent; and2) applying the concrete to a surface while the concrete is fluid.
    Type: Grant
    Filed: April 30, 1993
    Date of Patent: September 27, 1994
    Assignee: Sandoz Ltd.
    Inventors: Kenkichi Hamabe, Shigemi Matsuo, Hiroshi Nomachi, Hideo Ogawa, Minoru Ueda
  • Method for producing a cementitious composition in powder form
    Patent number: 5236501
    Abstract: A method for manufacturing a cementitious composition comprisinga) uniformally fluidising in a container, particles of a substantially dry powdered cementitious composition by creating aerial motion of the particles by rotational motion perpendicular to the fall of the particles,b) at the same time uniformally spraying the particles with 0.1 to 10 parts by weight (per 100 parts of cementitious composition) of water, optionally containing a cement admixture, andc) mixing the particles and the water intensively by shearing forces.
    Type: Grant
    Filed: September 7, 1989
    Date of Patent: August 17, 1993
    Assignee: Sandoz Ltd.
    Inventors: Hiroshi Nomachi, Hiroshi Yokoyama, Shigeki Yoshida, Yoshiro Yoshizaki
  • Lignosulfonates, oxycarboxylates, polycarboxylates, and polyoxalklene, alkylaryl and alkyl ethers admixtures for ultra-dry mix concrete
    Patent number: 5085708
    Abstract: An admixture for ultra-dry-mix concrete is disclosed containing one or more varieties of cement dispersing agents (A) selected from a group consisting of lignosulfonates, oxycarboxylates and polycarboxylates, and in addition, containing one or more varieties of nonionic surface-active agents (B) selected from a group consisting of polyoxyalkylene alkylaryl and alkyl ethers with a hydrophilic-lipophilic balance (HLB-value) of 8 to 17.
    Type: Grant
    Filed: January 24, 1991
    Date of Patent: February 4, 1992
    Assignee: Sandoz Ltd.
    Inventors: Yoshitaka Moriya, Hiroshi Nomachi, Makoto Takada, Yukihide Takatsu, Kenichi Umezawa
  • Lignosulfonic graft copolymer as a cement dispersant
    Patent number: 4977227
    Abstract: This invention provides a cement dispersant of a lignosulfonic acid graft copolymer, obtained by a redox free radical reaction of lignosulfonic acid or its salts with one or more acrylic or vinylic monomers containing functional groups, in an aqueous solution in the presence of a radical initiator, e.g, redox catalyst. The lignosulfonic acid graft copolymer has a molecular weight distribution of from 5.times.10.sup.2 to 5.times.10.sup.6.
    Type: Grant
    Filed: November 28, 1988
    Date of Patent: December 11, 1990
    Assignee: Sandoz Ltd.
    Inventors: Shin'ichi Negami, Hiroshi Nomachi, Toru Nemoto, Yoshio Tanaka, Akira Ohta