Patents by Inventor Yuen-Ming Lam

Yuen-Ming Lam 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).

  • Solar powered light
    Patent number: D437067
    Type: Grant
    Filed: April 24, 2000
    Date of Patent: January 30, 2001
    Assignee: Ever Step Development Limited
    Inventor: Yuen-Ming Lam
  • Solar and dynamo powered radio with light
    Patent number: D504410
    Type: Grant
    Filed: April 9, 2003
    Date of Patent: April 26, 2005
    Assignee: Goldmaster Development Limited
    Inventor: Yuen-Ming Lam
  • Solar and dynamo powered radio with light
    Patent number: D504411
    Type: Grant
    Filed: April 9, 2003
    Date of Patent: April 26, 2005
    Assignee: Goldmaster Development Limited
    Inventor: Yuen-Ming Lam
  • Solar compact mobile phone battery charger
    Patent number: D505113
    Type: Grant
    Filed: April 4, 2002
    Date of Patent: May 17, 2005
    Assignee: Ever Step Development Limited
    Inventor: Yuen-Ming Lam
  • Solar and dynamo powered radio with light
    Patent number: D505128
    Type: Grant
    Filed: April 9, 2003
    Date of Patent: May 17, 2005
    Assignee: Goldmaster Development Limited
    Inventor: Yuen-Ming Lam
  • Solar and dynamo powered radio with light
    Patent number: D505408
    Type: Grant
    Filed: April 9, 2003
    Date of Patent: May 24, 2005
    Assignee: Goldmaster Development Limited
    Inventor: Yuen-Ming Lam
  • Solar battery charger with adjustable meter and light
    Patent number: D441712
    Type: Grant
    Filed: June 16, 2000
    Date of Patent: May 8, 2001
    Assignee: Ever Step Development Limited
    Inventor: Yuen-Ming Lam
  • Solar powered light
    Patent number: D444585
    Type: Grant
    Filed: October 12, 2000
    Date of Patent: July 3, 2001
    Assignee: Ever Step Development Limited
    Inventor: Yuen-Ming Lam
  • Combined solar powered lantern and radio
    Patent number: D450143
    Type: Grant
    Filed: December 14, 2000
    Date of Patent: November 6, 2001
    Assignee: Ever Step Development Limited
    Inventor: Yuen-Ming Lam
  • Solar powered lamp
    Patent number: D452928
    Type: Grant
    Filed: January 10, 2001
    Date of Patent: January 8, 2002
    Assignee: Goldmaster Development Limited
    Inventor: Yuen-Ming Lam
  • Solar folding panel
    Patent number: D528501
    Type: Grant
    Filed: July 14, 2005
    Date of Patent: September 19, 2006
    Assignee: Goldmaster Development Limited
    Inventor: Yuen-Ming Lam
  • Solar battery charger
    Patent number: D534861
    Type: Grant
    Filed: October 29, 2004
    Date of Patent: January 9, 2007
    Assignee: Ever Step Development Limited
    Inventor: Yuen-Ming Lam
  • Solar panel
    Patent number: D536299
    Type: Grant
    Filed: November 22, 2005
    Date of Patent: February 6, 2007
    Assignee: Goldmaster Development Limited
    Inventor: Yuen-Ming Lam
  • Solar waterproof torch light
    Patent number: D470260
    Type: Grant
    Filed: August 2, 2001
    Date of Patent: February 11, 2003
    Assignee: Goldmaster Development Limited
    Inventor: Yuen-Ming Lam
  • Solar powered rotating stand
    Patent number: D470688
    Type: Grant
    Filed: September 24, 2001
    Date of Patent: February 25, 2003
    Assignee: Ever Step Development Limited
    Inventor: Yuen-Ming Lam
  • Toy ferris wheel
    Patent number: D572317
    Type: Grant
    Filed: August 6, 2007
    Date of Patent: July 1, 2008
    Assignee: Goldmaster Development Limited
    Inventor: Yuen-Ming Lam
  • Solar power panel
    Patent number: D493768
    Type: Grant
    Filed: January 3, 2003
    Date of Patent: August 3, 2004
    Assignee: Ever Step Development Limited
    Inventor: Yuen-Ming Lam
  • Solar powered light
    Patent number: D495083
    Type: Grant
    Filed: August 7, 2002
    Date of Patent: August 24, 2004
    Assignee: Goldmaster Development Limited
    Inventor: Yuen-Ming Lam
  • Solar powered light
    Patent number: D495444
    Type: Grant
    Filed: August 23, 2002
    Date of Patent: August 31, 2004
    Assignee: Goldmaster Development Limited
    Inventor: Yuen-Ming Lam
  • Solar powered light
    Patent number: D496484
    Type: Grant
    Filed: August 7, 2002
    Date of Patent: September 21, 2004
    Assignee: Goldmaster Development Limited
    Inventor: Yuen-Ming Lam