Patents by Inventor Amal S Amarasinghe

Amal S Amarasinghe 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).

  • Publication number: 20090038622
    Abstract: A respiratory mask assembly for delivering breathable gas to a patient includes a frame and a headgear assembly removably attachable to the frame. The headgear assembly includes a pair of side portions and a rear portion that interconnects the pair of side portions. The pair of side portions includes at least one strap. The rear portion has at least one strap constructed of at least two layers of material. One of the layers of material has a more rigid construction than the other of the layers of material to resist compression of the at least one strap of the rear portion in a first direction which resists movement of the at least one strap of the pair of side straps in the first direction.
    Type: Application
    Filed: October 6, 2008
    Publication date: February 12, 2009
    Applicant: ResMed Limited
    Inventors: Amal S. Amarasinghe, Perry D. Lithgow, Memduh Guney
  • Publication number: 20080276937
    Abstract: A mask assembly adapted for use with a positive airway pressure device, includes a mask frame, an elbow assembly provided to the frame, a cushion provided to the frame, a forehead support assembly, and a neck to connect the frame to the forehead support assembly, wherein the neck includes a pair of side walls having a streamlined design that is made to look sleek and reduce or minimize obtrusiveness. The pair of side walls may take the form of a single wall or more than two walls. The mask frame may include a recessed port structure including at least one port having access to an interior of the frame which at least in part with the cushion defines a breathing chamber in communication with a nasal passage of the patient in use. The mask frame may also include a channel to receive the cushion. The channel is formed by an outer wall and an inner wall and the channel includes an inner surface having a bead to engage with an outer surface of an edge of the cushion.
    Type: Application
    Filed: May 8, 2008
    Publication date: November 13, 2008
    Applicant: ResMed Limited
    Inventors: Aaron S. Davidson, Lemmy Nga, Michael J. Reid, Angelene M. Ozolins, Scott A. Howard, Amal S. Amarasinghe, Dimitri M. Maurer, Bart J. Caffin
  • Patent number: 7316230
    Abstract: An elbow assembly for use in a respiratory mask, which includes an elbow, an inlet port, an exhaust port, and a baffle separating the inlet port from the exhaust port. A mask assembly includes a cushion comprising at least one gusset and an aperture for connection to the elbow assembly.
    Type: Grant
    Filed: December 30, 2005
    Date of Patent: January 8, 2008
    Assignee: ResMed Limited
    Inventors: Joanne E. Drew, Memduh Guney, Amal S. Amarasinghe, Perry D. Lithgow, Anthony M. Ging, Borivoje Ljubojevic, Donald Darkin, Grahame B. Aston
  • Patent number: 7011090
    Abstract: An elbow assembly for use in a respiratory mask, which includes an elbow, an inlet port, an exhaust port, and a baffle separating the inlet port from the exhaust port. A mask assembly includes a cushion comprising at least one gusset and an aperture for connection to the elbow assembly.
    Type: Grant
    Filed: September 5, 2003
    Date of Patent: March 14, 2006
    Assignee: ResMed Limited
    Inventors: Joanne E. Drew, Memduh Guney, Amal S. Amarasinghe, Perry D. Lithgow, Anthony M Ging, Borivoje Ljubojevic, Donald Darkin, Grahame B Aston
  • Publication number: 20040112385
    Abstract: An elbow assembly for use in a respiratory mask, which includes an elbow, an inlet port, an exhaust port, and a baffle separating the inlet port from the exhaust port. A mask assembly includes a cushion comprising at least one gusset and an aperture for connection to the elbow assembly.
    Type: Application
    Filed: September 5, 2003
    Publication date: June 17, 2004
    Inventors: Joanne E. Drew, Memduh Guney, Amal S. Amarasinghe, Perry D. Lithgow, Anthony M. Ging, Borivoje Ljubojevic, Donald Darkin, Grahame B. Aston
  • Publication number: 20040112384
    Abstract: A respiratory mask assembly for delivering breathable gas to a patient includes a frame and at least one locking clip. The frame has a main body and a side frame member provided on each lateral side of the main body, at least one of the side frame members including a locking clip receiver assembly. The at least one locking clip has a main body providing a front portion adapted to be removably coupled with the at least one locking clip receiver assembly and a rear portion adapted to be removably coupled to a headgear assembly. The rear portion includes a cross bar that forms an opening through which a strap of the headgear assembly can pass and be removably coupled with the cross bar, and the front portion includes at least one resiliently flexible spring arm that is flexible within the plane of the main body.
    Type: Application
    Filed: September 5, 2003
    Publication date: June 17, 2004
    Applicant: ResMed Limited
    Inventors: Perry D. Lithgow, Memduh Guney, Amal S. Amarasinghe, Timothy Tsun-Fai Fu, Gary C. Robinson, Aaron Samuel Davidson, Milind Chandrakant Raje
  • Publication number: 20040112377
    Abstract: A respiratory mask assembly for delivering breathable gas to a patient includes a frame and a headgear assembly removably attachable to the frame. The headgear assembly includes a pair of side portions and a rear portion that interconnects the pair of side portions. The pair of side portions includes at least one strap. The rear portion has at least one strap constructed of at least two layers of material. One of the layers of material has a more rigid construction than the other of the layers of material to resist compression of the at least one strap of the rear portion in a first direction which resists movement of the at least one strap of the pair of side straps in the first direction.
    Type: Application
    Filed: September 5, 2003
    Publication date: June 17, 2004
    Applicant: ResMed Limited
    Inventors: Amal S. Amarasinghe, Perry D. Lithgow, Memduh Guney
  • Patent number: D500706
    Type: Grant
    Filed: December 22, 2003
    Date of Patent: January 11, 2005
    Assignee: ResMed Limited
    Inventors: Memduh Guney, Amal S Amarasinghe, Perry D Lithgow, Timothy Tsun-Fai Fu, Jim Saada, Gary C. Robinson
  • Patent number: D515204
    Type: Grant
    Filed: April 23, 2004
    Date of Patent: February 14, 2006
    Assignee: ResMed
    Inventors: Memduh Guney, Timothy Tsun-Fai Fu, Perry D. Lithgow, Amal S. Amarasinghe, Joanne E. Drew, Jim Saada, Borivoje Ljubojevic, Anthony Ging, Susan R. Lynch, Gary C. Robinson, Robert H. Frater
  • Patent number: D532511
    Type: Grant
    Filed: January 3, 2005
    Date of Patent: November 21, 2006
    Assignee: ResMed Limited
    Inventor: Amal S. Amarasinghe
  • Patent number: D532512
    Type: Grant
    Filed: January 3, 2005
    Date of Patent: November 21, 2006
    Assignee: ResMed Limited
    Inventor: Amal S. Amarasinghe
  • Patent number: D540464
    Type: Grant
    Filed: July 21, 2004
    Date of Patent: April 10, 2007
    Assignee: ResMed Limited
    Inventors: Memduh Guney, Anthony Ging, Perry D. Lithgow, Jim Saada, Amal S. Amarasinghe, Joanne E. Drew, Borivoje Ljubojevic, Timothy Tsun-Fai Fu
  • Patent number: D540940
    Type: Grant
    Filed: July 30, 2004
    Date of Patent: April 17, 2007
    Assignee: ResMed Limited
    Inventors: Amal S. Amarasinghe, Perry D. Lithgow, Memduh Guney
  • Patent number: D486226
    Type: Grant
    Filed: November 8, 2002
    Date of Patent: February 3, 2004
    Assignee: Resmed Limited
    Inventors: Memduh Guney, Timothy Tsun-Fai Fu, Perry D. Lithgow, Amal S. Amarasinghe, Joanne E. Drew, Jim Saada, Borivoje Ljubojevic, Anthony Ging, Susan R. Lynch, Gary C. Robinson, Robert H. Frater
  • Patent number: D490343
    Type: Grant
    Filed: November 8, 2002
    Date of Patent: May 25, 2004
    Assignee: Resmed Limited
    Inventors: Memduh Guney, Amal S. Amarasinghe, Perry D. Lithgow, Timothy Tsun-Fai Fu, Jim Saada, Gary C. Robinson
  • Patent number: D492992
    Type: Grant
    Filed: November 25, 2003
    Date of Patent: July 13, 2004
    Assignee: ResMed Limited
    Inventors: Memduh Guney, Timothy Tsun-Fai Fu, Perry D. Lithgow, Amal S. Amarasinghe, Joanne E. Drew, Jim Saada, Borivoje Ljubojevic, Anthony Ging, Susan R. Lynch, Gary C. Robinson, Robert H. Frater
  • Patent number: D586462
    Type: Grant
    Filed: December 7, 2007
    Date of Patent: February 10, 2009
    Assignee: ResMed Limited
    Inventors: Michael K. Gunaratnam, Amal S. Amarasinghe
  • Patent number: D496726
    Type: Grant
    Filed: November 8, 2002
    Date of Patent: September 28, 2004
    Assignee: ResMed Limited
    Inventors: Amal S. Amarasinghe, Perry D. Lithgow, Memduh Guney