Patents by Inventor S. Chai

S. Chai 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).

  • Apparatus and method for performing a thoracic operation
    Patent number: 4291694
    Abstract: A kit of instruments including a hollow needle, a hollow pneumotube, and a cover assembly adapted for use in performing a percutaneous thoracic operation on a patient, and a method for performing a percutaneous pneumotube insertion in a patient with a documented pneumothorax.
    Type: Grant
    Filed: October 29, 1979
    Date of Patent: September 29, 1981
    Inventor: S. Chai