Patents by Inventor Peter Kwok Hing Lam
Peter Kwok Hing 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).
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Patent number: 11607472Abstract: Disclosed is a moisture switchable adhesive composition including a polymer and a switch initiator. The composition can be switched from a first liquid state to a second adhesive state by activation of the switch initiator. The composition has in the first liquid state a complex viscosity |?*| below 0.4 MPa s; and the composition has in the second adhesive state a second repeated peel force above 1 N/25 mm.Type: GrantFiled: May 20, 2021Date of Patent: March 21, 2023Assignee: Coloplast A/SInventors: Peter Kwok Hing Lam, Esben Stroebech, Kristoffer Hansen, Anders Grove Sund, Anca Gabriela Bejenariu, Charlotte Juel Fristrup, Bahar Bingol
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Patent number: 11517468Abstract: An adhesive ostomy wafer has a liner removed to expose adhesive and thus ready the adhesive ostomy wafer for adhesion to a user. The adhesive ostomy wafer includes a backing layer providing a distal surface of the adhesive ostomy wafer that is oriented to face away from skin of the user during use, an adhesive layer deposited onto the backing layer, with the adhesive layer providing a proximal surface of the adhesive ostomy wafer, an opening formed through the backing layer and the adhesive layer, with the opening adapted to fit around a stoma of the user, and a reinforcement structure located between the distal surface and the proximal surface of the adhesive ostomy wafer.Type: GrantFiled: May 18, 2018Date of Patent: December 6, 2022Assignee: Coloplast A/SInventors: Peter Kwok Hing Lam, Matthew Laws, Liam O'Brien, Michael Hansen, Birthe Vestbo Andersen, Kristoffer Hansen, Steffen Kongensbjerg Larsen
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Publication number: 20210369487Abstract: A method of applying an ostomy appliance includes providing an adhesive wafer having an adhesive layer, a backing layer applied to a distal surface of the adhesive layer, and a release liner applied to a proximal surface of the adhesive layer, where the release liner forms an enclosure; introducing liquid into the enclosure and increasing a temperature of the adhesive layer with the liquid; removing the release liner from the ostomy appliance; and applying the adhesive wafer to the skin of the user.Type: ApplicationFiled: August 4, 2021Publication date: December 2, 2021Inventors: Esben Stroebech, Michael Hansen, Birthe Vestbo Andersen, Peter Kwok Hing Lam, Lars Olav Schertiger
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Patent number: 11109996Abstract: An ostomy appliance comprising an adhesive wafer (2) for attachment to a skin surface of a user. The adhesive wafer includes a backing layer (13), an adhesive layer (12), and at least one release liner (17). The release liner comprises an enclosure (9) capable of containing a liquid or a wipe (14). The enclosure (9) can be filled with liquid before removal from the wafer, thereby providing a temperature impact on the adhesive. The wipe (14) can be impregnated with an activating agent for providing an activation of the adhesive prior to use.Type: GrantFiled: September 23, 2016Date of Patent: September 7, 2021Assignee: Coloplast A/SInventors: Esben Stroebech, Michael Hansen, Birthe Vestbo Andersen, Peter Kwok Hing Lam, Lars Olav Schertiger
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Publication number: 20210268142Abstract: Disclosed is a moisture switchable adhesive composition including a polymer and a switch initiator. The composition can be switched from a first liquid state to a second adhesive state by activation of the switch initiator. The composition has in the first liquid state a complex viscosity |?*| below 0.4 MPa s; and the composition has in the second adhesive state a second repeated peel force above 1 N/25 mm.Type: ApplicationFiled: May 20, 2021Publication date: September 2, 2021Inventors: Peter Kwok Hing Lam, Esben Stroebech, Kristoffer Hansen, Anders Grove Sund, Anca Gabriela Bejenariu, Charlotte Juel Fristrup, Bahar Bingol
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Patent number: 11045576Abstract: Disclosed is a composition including a polymer and a switch initiator. The composition can be switched from a first liquid state to a second adhesive state by activation of the switch initiator. The composition has in the first liquid state a complex viscosity |?*| below 0.4 MPa s; and the composition has in the second adhesive state a second repeated peel force above 1 N/25 mm.Type: GrantFiled: October 8, 2015Date of Patent: June 29, 2021Assignee: Coloplast A/SInventors: Peter Kwok Hing Lam, Esben Stroebech, Kristoffer Hansen, Anders Grove Sund, Anca Gabriela Bejenariu, Charlotte Juel Fristrup, Bahar Bingol
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Publication number: 20190117824Abstract: Disclosed is a method for applying an adhesive composition to the skin of a user and for removing the adhesive composition from the skin. The method includes the steps of providing an adhesive composition including a switchable adhesive; applying the adhesive composition to the skin; exposing the switchable adhesive to a first switch activator, thereby switching the switchable adhesive from an application state to a wear state; exposing the switchable adhesive to a second switch activator, thereby switching the switchable adhesive from the wear state to a removal state; and removing the adhesive composition from the skin of the user.Type: ApplicationFiled: April 7, 2017Publication date: April 25, 2019Inventors: Kristoffer Hansen, Anca Gabriela Bejenariu, Anne Kathrine Kattenhøj Sloth Overgaard, Esben Stroebech, Peter Kwok Hing Lam, Anders Grove Sund
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Patent number: 10251973Abstract: An adhesive composition of a rubbery elastomeric matrix comprising a block-copolymer and a homopolymer where the block-copolymer contains one or more block(s) of a polymerized mono alkenyl arene monomer and one or more block(s) consisting of a linear or branched saturated hydrocarbon chain wherein the homopolymer is a linear or branched saturated hydrocarbon chain made from the same monomer as said block(s) consisting of a linear or branched saturated hydrocarbon chain.Type: GrantFiled: December 16, 2004Date of Patent: April 9, 2019Assignee: Coloplast A/SInventors: Peter Kwok Hing Lam, Mads Lykke
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Publication number: 20180263805Abstract: An adhesive ostomy wafer has a liner removed to expose adhesive and thus ready the adhesive ostomy wafer for adhesion to a user. The adhesive ostomy wafer includes a backing layer providing a distal surface of the adhesive ostomy wafer that is oriented to face away from skin of the user during use, an adhesive layer deposited onto the backing layer, with the adhesive layer providing a proximal surface of the adhesive ostomy wafer, an opening formed through the backing layer and the adhesive layer, with the opening adapted to fit around a stoma of the user, and a reinforcement structure located between the distal surface and the proximal surface of the adhesive ostomy wafer.Type: ApplicationFiled: May 18, 2018Publication date: September 20, 2018Applicant: Coloplast A/SInventors: Peter Kwok Hing Lam, Matthew Laws, Liam O'Brien, Michael Hansen, Birthe Vestbo Andersen, Kristoffer Hansen, Steffen Kongensbjerg Larsen
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Publication number: 20180263804Abstract: An ostomy appliance comprising an adhesive wafer (2) for attachment to a skin surface of a user. The adhesive wafer includes a backing layer (13), an adhesive layer (12), and at least one release liner (17). The release liner comprises an enclosure (9) capable of containing a liquid or a wipe (14). The enclosure (9) can be filled with liquid before removal from the wafer, thereby providing a temperature impact on the adhesive. The wipe (14) can be impregnated with an activating agent for providing an activation of the adhesive prior to use.Type: ApplicationFiled: September 23, 2016Publication date: September 20, 2018Inventors: Esben Stroebech, Michael Hansen, Birthe Vestbo Andersen, Peter Kwok Hing Lam, Lars Olav Schertiger
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Publication number: 20180250156Abstract: Disclosed is a method of attaching an adhesive, such as an adhesive on an adhesive base plate of an ostomy device, to a skin surface of a user. The method involves the steps of providing an adhesive, for instance on a base plate of an ostomy device. The adhesive can be disposed on a skin-facing surface of a backing layer. Also provided is a solvent capable of at least partly dissolving the adhesive. The solvent is brought into contact with the adhesive and the adhesive is applied to the skin of the user. Also disclosed is a kit of parts including an adhesive and a solvent capable of at least partly dissolving the adhesive.Type: ApplicationFiled: March 17, 2016Publication date: September 6, 2018Inventor: Peter Kwok Hing Lam
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Patent number: 9999535Abstract: An ostomy wafer (1) comprising a proximal surface in an axial direction facing the user during use provided with an adhesive layer (7), a distal surface (5) in the axial direction facing away from the user during use provided with a backing layer, coupling means for attaching a collection bag, an opening having an inner radial boundary defining a stoma receiving opening, and an outer radial boundary defining the peripheral edge of the ostomy wafer. Furthermore, the wafer is provided with a reinforcement structure (6).Type: GrantFiled: December 16, 2011Date of Patent: June 19, 2018Assignee: Coloplast A/SInventors: Peter Kwok Hing Lam, Matthew Laws, Liam O'Brien, Michael Hansen, Birthe Vestbo Andersen, Kristoffer Hansen, Steffen Kongensbjerg Larsen
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Patent number: 9980849Abstract: An ostomy appliance wafer is provided with a stoma-receiving hole formed through the wafer. The wafer includes a backing layer, and an absorbent layer located between a first adhesive and a second adhesive. The first adhesive is disposed over the backing layer to define a peripheral edge area, a central area surrounding the hole, and an intermediate area of the wafer that is located between the peripheral edge area and the central area. The absorbent layer is disposed on the first adhesive either in A) the central area of the wafer, B) the intermediate area of the wafer, or C) the central area and the intermediate area of the wafer. The second adhesive is disposed over both a portion of an outer edge area of the absorbent layer and a portion of the first adhesive peripheral to the outer edge area of the absorbent layer.Type: GrantFiled: February 12, 2016Date of Patent: May 29, 2018Assignee: Coloplast A/SInventor: Peter Kwok Hing Lam
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Publication number: 20170239384Abstract: Disclosed is a composition including a polymer and a switch initiator. The composition can be switched from a first liquid state to a second adhesive state by activation of the switch initiator. The composition has in the first liquid state a complex viscosity |?*| below 0.4 MPa s; and the composition has in the second adhesive state a second repeated peel force above 1 N/25 mm.Type: ApplicationFiled: October 8, 2015Publication date: August 24, 2017Applicant: Coloplast A/SInventors: Peter Kwok Hing Lam, Esben Stroebech, Kristoffer Hansen, Anders Grove Sund, Anca Gabriela Bejenariu, Charlotte Juel Fristrup, Bahar Bingol
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Publication number: 20160158057Abstract: An ostomy appliance wafer is provided with a stoma-receiving hole formed through the wafer. The wafer includes a backing layer, and an absorbent layer located between a first adhesive and a second adhesive. The first adhesive is disposed over the backing layer to define a peripheral edge area, a central area surrounding the hole, and an intermediate area of the wafer that is located between the peripheral edge area and the central area. The absorbent layer is disposed on the first adhesive either in A) the central area of the wafer, B) the intermediate area of the wafer, or C) the central area and the intermediate area of the wafer. The second adhesive is disposed over both a portion of an outer edge area of the absorbent layer and a portion of the first adhesive peripheral to the outer edge area of the absorbent layer.Type: ApplicationFiled: February 12, 2016Publication date: June 9, 2016Inventor: Peter Kwok Hing Lam
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Patent number: 9289322Abstract: An ostomy appliance comprising an adhesive wafer for attachment to the body, the wafer comprising a skin facing surface and a non skin-facing surface, the non skin-facing surface being provided with a backing layer, the skin facing surface of the wafer comprises a central area comprising a substantially non-absorbent protective adhesive, an intermediate area surrounding the central area, said area comprising a substantially non-absorbent soft adhesive, and an edge area surrounding the intermediate area, said edge area comprising a substantially non-absorbent protective adhesive.Type: GrantFiled: December 20, 2011Date of Patent: March 22, 2016Assignee: Coloplast A/SInventor: Peter Kwok Hing Lam
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Publication number: 20150018790Abstract: An ostomy wafer (1) comprising a proximal surface in an axial direction facing the user during use provided with an adhesive layer (7), a distal surface (5) in the axial direction facing away from the user during use provided with a backing layer, coupling means for attaching a collection bag, an opening having an inner radial boundary defining a stoma receiving opening, and an outer radial boundary defining the peripheral edge of the ostomy wafer. Furthermore, the wafer is provided with a reinforcement structure (6).Type: ApplicationFiled: December 16, 2011Publication date: January 15, 2015Applicant: COLOPLAST A/SInventors: Peter Kwok Hing Lam, Matthew Laws, Liam O'Brien, Michael Hansen, Birthe Vestbo Andersen, Kristoffer Hansen, Steffen Kongensbjerg Larsen
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Patent number: 8802806Abstract: The present invention relates to a two-component sealant comprising a first part and a second part wherein a) the first part (X) comprises: (i) a polyalkyleneoxide polymer having one or more unsaturated end groups (ii) an addition reaction catalyst b) the second part (Y) comprises: (i) an organosiloxane comprising one or more Si—H groups. The present invention also relates to medical devices used in connection with the sealant, mixing devices for delivering and mixing the first part and the second part of the sealant, and methods for applying the sealant.Type: GrantFiled: September 6, 2007Date of Patent: August 12, 2014Assignee: Coloplast A/SInventors: Peter Kwok Hing Lam, Henrik Edvardsen
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Patent number: 8758807Abstract: The present invention relates to a pressure sensitive adhesive composition comprising a continuous phase and a discontinuous phase wherein a) the continuous phase comprises a water vapor permeable hydrophobic polymer; and b) the discontinuous phase comprises a water soluble salt.Type: GrantFiled: December 20, 2007Date of Patent: June 24, 2014Assignee: Coloplast A/SInventors: Peter Kwok Hing Lam, Anders Bach, Mads Lykke, Astrid Toftkaer, Hasse Buus, Tom Kongebo
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Publication number: 20130274696Abstract: An ostomy appliance comprising an adhesive wafer for attachment to the body, the wafer comprising a skin facing surface and a non skin-facing surface, the non skin-facing surface being provided with a backing layer, the skin facing surface of the wafer comprises a central area comprising a substantially non-absorbent protective adhesive, an intermediate area surrounding the central area, said area comprising a substantially non-absorbent soft adhesive, and an edge area surrounding the intermediate area, said edge area comprising a substantially non-absorbent protective adhesive.Type: ApplicationFiled: December 20, 2011Publication date: October 17, 2013Applicant: COLOPLAST A/SInventor: Peter Kwok Hing Lam