Patents by Inventor Thomas S. Chan

Thomas S. Chan 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).

  • Filter with handle feature
    Patent number: 6283458
    Abstract: A portable humidifier including a housing defining an air inlet, an air outlet, and an air flow path therebetween; a retainer disposed in the housing; and an air permeable, liquid absorbent cartridge element replaceably retained by the retainer and having a handle to facilitate removal from the housing. Also included is a blower disposed in the housing and activatable to produce air flow through the air flow path and cartridge element and a liquid supply for supplying liquid to the cartridge element.
    Type: Grant
    Filed: November 15, 1999
    Date of Patent: September 4, 2001
    Assignee: Honeywell International Inc.
    Inventors: Paul Cox, Thomas S. Chan
  • Modular in-the-ear hearing aid
    Patent number: 4069400
    Abstract: An in-the-ear hearing aid in which a complete functional instrument is contained within a modular housing of standardized configuration and which is attachable to a custom ear mold for a particular user's ear. The modular housing is anthropometrically configured and is readily attached to and removed from the ear mold for repair and replacement.
    Type: Grant
    Filed: January 31, 1977
    Date of Patent: January 17, 1978
    Assignee: United States Surgical Corporation
    Inventors: Donald L. Johanson, Thomas S. Chan
  • Hearing aid
    Patent number: D266271
    Type: Grant
    Filed: January 29, 1979
    Date of Patent: September 21, 1982
    Assignee: Audivox, Inc.
    Inventors: Donald L. Johanson, Thomas S. Chan
  • Humidifier
    Patent number: D416316
    Type: Grant
    Filed: October 6, 1998
    Date of Patent: November 9, 1999
    Assignee: Honeywell Inc.
    Inventors: Paul Cox, Thomas S. Chan, Kenneth David Harris, Jr., Clinton E. Cockrill, James L. Pettingill
  • Humidifier
    Patent number: D428979
    Type: Grant
    Filed: March 18, 1999
    Date of Patent: August 1, 2000
    Assignee: Honeywell Inc.
    Inventors: Paul Cox, Thomas S. Chan, Kenneth David Harris, Jr., Clinton E. Cockrill
  • Humidifier
    Patent number: D432221
    Type: Grant
    Filed: October 6, 1998
    Date of Patent: October 17, 2000
    Assignee: Honeywell International Inc.
    Inventors: Paul Cox, Thomas S. Chan, Kenneth David Harris, Jr., W. Corey Ayer, Robert A. Ketelhohn