Patents by Inventor Yasuo Takeichi

Yasuo Takeichi 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).

  • Preheater mounted within a well
    Patent number: 4359627
    Abstract: A preheater is disclosed which can be inserted and withdrawn from a well tube defining a curved passage, without having its heating element damaged, by utilizing the flexibility of a spirally coiled structure having increased stability of shape and excellent capacity of restoring its original shape after elastic deformation.
    Type: Grant
    Filed: October 10, 1980
    Date of Patent: November 16, 1982
    Assignee: Daido Sangyo Co., Ltd.
    Inventor: Yasuo Takeichi