Patents by Inventor Senichi Maeda

Senichi Maeda 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).

  • Elastic covered yarn and method and apparatus for producing the same
    Patent number: 4509320
    Abstract: An elastic covered yarn and a method and apparatus for producing the same, wherein an elastic yarn is wrapped in stretched condition around a nonelastic yarn as a core yarn, the contracting action of the stretched elastic yarn causing the elastic yarn to take the position of the core yarn, covered with the nonelastic yarn.
    Type: Grant
    Filed: March 18, 1983
    Date of Patent: April 9, 1985
    Inventor: Senichi Maeda
  • Doubled-yarn of elastic and non-elastic yarns and method and apparatus for producing same
    Patent number: 4121408
    Abstract: A double-yarn package of elastic and non-elastic yarns is produced by preparing a non-elastic yarn twisted periodically and alternately in opposite directions, doubling an elastic yarn which is in a stretched condition with said twisted non-elastic yarn, twisting the doubled yarn periodically and alternately in such directions as are opposite to the directions of said periodical and alternate twist of said non-elastic yarn, and then winding the thus twisted doubled yarn on a winding core.
    Type: Grant
    Filed: July 20, 1977
    Date of Patent: October 24, 1978
    Inventor: Senichi Maeda