Patents by Inventor Yujin Tabata

Yujin Tabata 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: 5015262
    Abstract: Cloth is dyed using a reactive dye, an alkaline substance and a leveling agent. The leveling agent is one or more substances selected from the group consisting of phospholipids obtained from animals or plants, compounds having the formula I and compounds having the formula II: ##STR1## wherein R.sub.1 and R.sub.3 each denotes alkyl, alkenyl, hydroxyalkyl, or M, with the proviso that both of R.sub.1 and R.sub.3 are not M simultaneously; R.sub.2 denotes alkylene having 2 to 4 carbon atoms; 1 and m each denote 0 or an integer of at least 1; and M denotes alkali metal or hydrogen, ##STR2## wherein R.sub.4 denotes alkyl, alkenyl, hydroxyalkyl, straight chain, hydroxy-substituted alkenyloxy or branched chain, hydroxy-substituted alkenyloxy; X and Y each denote hydrogen, alkoxy, alkyl, or ##STR3## wherein M denotes alkali metal or hydrogen; and n denotes an integer of at least 1.
    Type: Grant
    Filed: December 26, 1988
    Date of Patent: May 14, 1991
    Assignee: Nihon Surfactant Kogyo K.K.
    Inventors: Noriaki Ohba, Yujin Tabata, Tateyuki Nagatomi
  • Patent number: 4976743
    Abstract: Fiber articles are uniformly dyed with use of a dyeing auxiliary composition which comprises an anionic surfactant of the alpha-hydroxysulfonic acid type and an organic polybasic polymer and has a pH of 9 or higher.
    Type: Grant
    Filed: March 31, 1989
    Date of Patent: December 11, 1990
    Assignee: Nihon Surfactant Kogyo K.K.
    Inventors: Noriaki Ohba, Yujin Tabata, Masaaki Nagatsuka, Tateyuki Nagatomi, Helmut Klicker
  • Patent number: 4379755
    Abstract: Stable and homogeneous gel is obtained by forming a solution of a hydrophilic sucrose fatty-acid ester and a hydrophilic liquid polyhydric alcohol and incorporating oil into the resulting solution. Thus-prepared gel is useful either per se or for producing stable aqueous emulsions by admixing water therewith.Stable and homogeneous gel is also obtained by forming a solution of hydrophilic sucrose fatty-acid ester, hydrophilic liquid polyhydric alcohol and lipophilic polyhydric alcohol fatty-acid ester and adding oil to the thus-obtained solution. Such gel likewise yields a stable aqueous emulsion when admixed with water.Neither the noted homogenous gel nor the noted stable emulsion is produced from the specified constituents when admixed in a different order from that specified.
    Type: Grant
    Filed: October 31, 1980
    Date of Patent: April 12, 1983
    Assignee: Nihon Surfactant Industry Co., Ltd.
    Inventors: Mikio Yamada, Yujin Tabata