Patents by Inventor I-Min Hsiao

I-Min Hsiao 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).

  • Oil-free air compressor
    Patent number: 6648612
    Abstract: An oil-free air compressor is characterized in an air inlet provided at a lateral open end of a crankcase of the air compressor. External air enters into the crankcase via the lateral air inlet and then enters into a cylinder above the crankcase via a check valve provided on a piston head in the cylinder. Air in the cylinder is compressed by the piston head and then discharged to an air storage tank via a single air outlet provided on a cylinder head of the cylinder.
    Type: Grant
    Filed: March 25, 2002
    Date of Patent: November 18, 2003
    Inventor: I-Min Hsiao
  • OIL-FREE AIR COMPRESSOR
    Publication number: 20030180161
    Abstract: An oil-free air compressor is characterized in an air inlet provided at a lateral open end of a crankcase of the air compressor. External air enters into the crankcase via the lateral air inlet and then enters into a cylinder above the crankcase via a check valve provided on a piston head in the cylinder. Air in the cylinder is compressed by the piston head and then discharged to an air storage tank via a single air outlet provided on a cylinder head of the cylinder.
    Type: Application
    Filed: March 25, 2002
    Publication date: September 25, 2003
    Inventor: I-Min Hsiao
  • Bare compressor
    Patent number: D502709
    Type: Grant
    Filed: March 19, 2003
    Date of Patent: March 8, 2005
    Inventor: I-Min Hsiao
  • Stress switch cover of compressor
    Patent number: D502710
    Type: Grant
    Filed: March 19, 2003
    Date of Patent: March 8, 2005
    Inventor: I-Min Hsiao
  • Air compressor crank case
    Patent number: D559271
    Type: Grant
    Filed: March 23, 2007
    Date of Patent: January 8, 2008
    Inventor: I-min Hsiao
  • Handle of a pressure switch
    Patent number: D572280
    Type: Grant
    Filed: January 29, 2007
    Date of Patent: July 1, 2008
    Inventor: I-Min Hsiao
  • Bare compressor
    Patent number: D499745
    Type: Grant
    Filed: July 2, 2003
    Date of Patent: December 14, 2004
    Inventor: I-Min Hsiao
  • Air compressor
    Patent number: D660321
    Type: Grant
    Filed: July 1, 2011
    Date of Patent: May 22, 2012
    Assignee: Puma Industrial Co., Ltd.
    Inventor: I-Min Hsiao
  • Air compressor
    Patent number: D660322
    Type: Grant
    Filed: July 1, 2011
    Date of Patent: May 22, 2012
    Assignee: Puma Industrial Co., Ltd.
    Inventor: I-Min Hsiao