Patents by Inventor Pingfan Wu
Pingfan Wu 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: 10668701Abstract: A sound and heat insulating blanket is presented comprising: a) a first layer of fabric comprising first fibers; and b) a first sound barrier film comprising a first rubber; wherein the first layer of fabric and first sound barrier film are bound together through a first interpenetrated binding layer wherein the first rubber of the first sound barrier film is interpenetrated by the first fibers of the first layer of fabric; and optionally c) a second layer of fabric comprising second fibers; wherein the second layer of fabric and first sound barrier film are bound together through a second interpenetrated binding layer wherein the first cured composition of the first sound barrier film is interpenetrated by the second fibers of the second layer of fabric. Typically, the sound and heat insulating blanket comprises no adhesive binding the first and second layers of fabric and the sound barrier film.Type: GrantFiled: May 5, 2016Date of Patent: June 2, 2020Assignee: 3M Innovative Properties CompanyInventors: Pingfan Wu, Lianzhou Chen, Fredrick W. Vance, Edward E. Cole, Charles W. Hedley, Gregory L. Simon, Michael C. Martin
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Publication number: 20200094537Abstract: Provided are surfacing films that have a surface layer having opposed first and second major surfaces, the first major surface comprising a fluoropolymer surface and the second major surface optionally comprising a nanostructured surface. A printed layer can be disposed on the second major surface and can be at least partially embedded in the nanostructured surface, if present. As a further option, the fluoropolymer surface can be microreplicated to provide a frictional surface and/or provide aerodynamic drag reduction on aircraft structures. Optionally, the delamination peel strength of the surface layer from the remaining layers can be greater than the tensile strength of the surface layer.Type: ApplicationFiled: May 3, 2018Publication date: March 26, 2020Inventors: Pingfan Wu, Timothy J. Hebrink, Moses M. David, Chris A. Praggastis
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Publication number: 20200071865Abstract: Dimensionally stable fire-resistant fibrous structures including fire-resistant melt-blown nonwoven fibers, and processes and apparatus for producing such dimensionally stable, fire-resistant nonwoven fibrous structures. The melt-blown fibers include poly(phenylene sulfide) in an amount sufficient for the nonwoven fibrous structures to pass one or more fire-resistance test selected from UL 94 V0, FAR 25.853 (a), and FAR 25.856 (a), without any halogenated flame-retardant additive in the nonwoven fibrous structure. The melt-blown fibers are subjected to a controlled in-flight heat treatment at a temperature below a melting temperature of the poly(phenylene sulfide) immediately upon exiting from at least one orifice of a melt-blowing die, in order to impart dimensional stability to the fibers.Type: ApplicationFiled: December 29, 2017Publication date: March 5, 2020Inventors: Liyun Ren, Pingfan Wu, Daniel J. Zillig, Sachin Talwar, Jonathan H. Alexander
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Patent number: 10501612Abstract: A curable composition is provided comprising a curable rubber comprising: a) 80.0-99.9 wt % of a chloroprene resin; b) 0.06-13 wt % of trimethyl thiourea; and c) 0.06-13 wt % of a benzothiazolesulfenamide, such as N-cyclohexyl-2-benzothiazoles-ulfenamide. The present disclosure additionally provides cured compositions comprising a rubber comprising a crosslinked chloroprene resin and a fire retardant particle system comprising: d) 5-95 wt % particulate magnesium hydroxide (Mg(OH)2); and e) 5-95 wt % particulate aluminum trihydrate (Al(OH)3). In some embodiments the particulate aluminum trihydrate (Al(OH)3) has a mean particle size of greater than 30 microns and less than 400 microns, and more typically a mean particle size of greater than 82 microns. The present disclosure additionally provides sound barrier films comprising the cured compositions according to the present disclosure, in particular fire resistant sound barrier films.Type: GrantFiled: May 3, 2016Date of Patent: December 10, 2019Assignee: 3M Innovative Properties CompanyInventors: Pingfan Wu, Lianzhou Chen, Fredrick W. Vance, Edward E. Cole, Charles W. Hedley, Gregory L. Simon, Michael C. Martin
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Publication number: 20190202547Abstract: Provided are aerodynamic articles and related methods that use an aerodynamic body with a microstructured surface thereon. The microstructured surface has a plurality of parallel primary ridges defining major capillary channels, and optionally a plurality of parallel secondary ridges having a height less than that of the primary ridges and extending between and generally parallel to the primary ridges. The optional secondary ridges at least partially define two or more minor capillary channels within each major capillary channel. The aerodynamic surface provides reduced drag and is capable providing a high degree of friction against shoe surfaces under oil and water contaminated conditions.Type: ApplicationFiled: June 9, 2017Publication date: July 4, 2019Inventors: Pingfan Wu, Nicholas A. Lee, Raymond P. Johnston, Chris A. Praggastis
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Patent number: 10286489Abstract: The present application relates to an apparatus (52) for supporting sheet material during cutting by laser radiation comprising a support member (42) having a gold facing layer. A method for cutting sheet material using such apparatus is also defined.Type: GrantFiled: December 29, 2011Date of Patent: May 14, 2019Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Pingfan Wu, Moses M. David, Bruce E. Tait, Schoen A. Schuknecht, Steven D. Theiss, Charles J. Studiner, IV, Donovan C. C. Karg, Jr.
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Publication number: 20180346695Abstract: A curable composition is provided comprising a curable rubber comprising: a ) 80.0-99.9 wt % of a chloroprene resin; b) 0.06-13 wt % of trimethyl thiourea; and c) 0.06-13 wt % of a benzothiazolesulfenamide, such as N-cyclohexyl-2-benzothiazoles-ulfenamide. The present disclosure additionally provides cured compositions comprising a rubber comprising a crosslinked chloroprene resin and a fire retardant particle system comprising: d) 5-95 wt % particulate magnesium hydroxide (Mg(OH)2); and e) 5-95 wt % particulate aluminum trihydrate (Al(OH)3). In some embodiments the particulate aluminum trihydrate (Al(OH)3) has a mean particle size of greater than 30 microns and less than 400 microns, and more typically a mean particle size of greater than 82 microns. The present disclosure additionally provides sound barrier films comprising the cured compositions according to the present disclosure, in particular fire resistant sound barrier films.Type: ApplicationFiled: May 3, 2016Publication date: December 6, 2018Inventors: Pingfan Wu, Lianzhou Chen, Fredrick W. Vance, Edward E. Cole, Charles W. Hedley, Gregory L. Simon, Michael C. Martin
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Patent number: 10035339Abstract: Laser conversion of multilayer optical film bodies comprising polyester and polycarbonate materials.Type: GrantFiled: December 14, 2017Date of Patent: July 31, 2018Assignee: 3M Innovative Properties CompanyInventors: Pingfan Wu, Edward J. Woo, Ian R. Owen, Bruce E. Tait, Frederick P. LaPlant, Patrick R. Fleming
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Publication number: 20180104937Abstract: A sound and heat insulating blanket is presented comprising: a) a first layer of fabric comprising first fibers; and b) a first sound barrier film comprising a first rubber; wherein the first layer of fabric and first sound barrier film are bound together through a first interpenetrated binding layer wherein the first rubber of the first sound barrier film is interpenetrated by the first fibers of the first layer of fabric; and optionally c) a second layer of fabric comprising second fibers; wherein the second layer of fabric and first sound barrier film are bound together through a second interpenetrated binding layer wherein the first cured composition of the first sound barrier film is interpenetrated by the second fibers of the second layer of fabric. Typically, the sound and heat insulating blanket comprises no adhesive binding the first and second layers of fabric and the sound barrier film.Type: ApplicationFiled: May 5, 2016Publication date: April 19, 2018Inventors: Pingfan Wu, Lianzhou Chen, Fredrick W. Vance, Edward E. Cole, Charles W. Hedley, Gregory L. Simon, Michael C. Martin
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Publication number: 20180104945Abstract: Laser conversion of multilayer optical film bodies comprising polyester and polycarbonate materials.Type: ApplicationFiled: December 14, 2017Publication date: April 19, 2018Inventors: Pingfan Wu, Edward J. Woo, Ian R. Owen, Bruce E. Tait, Frederick P. LaPlant, Patrick R. Fleming
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Patent number: 9878530Abstract: Laser cutting of multilayer optical film bodies comprising polyester and polycarbonate materials.Type: GrantFiled: December 29, 2011Date of Patent: January 30, 2018Assignee: 3M Innovative Properties CompanyInventors: Pingfan Wu, Edward J. Woo, Ian R. Owen, Bruce E. Tait, Frederick P. Laplant, Patrick R. Fleming
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Patent number: 9603242Abstract: A transparent electrical conductor (10; 20), comprising a transparent substrate (14; 201); a composite layer (18; 28) comprising an electrically conductive layer (12) disposed on at least a portion of a major surface of the transparent substrate (14; 201) and comprising a plurality of interconnecting metallic nanowires, and a polymeric overcoat layer (16) disposed on at least a portion of the electrically conductive layer (12); wherein a pattern in the composite layer includes an x-axis and a y-axis of an x-y plane of the composite layer and a z-axis into the x-y plane of the composite layer, and the pattern defines a plurality of electrically conductive regions (24, 24?) in the x-y plane of the composite layer (18; 28), wherein the electrically conductive regions (24, 24?) are separated from each other by electrically insulative traces (21), each of which defines a valley into the z-axis of the x-y plane of the composite layer (18; 28), the valley having a maximum depth (27) in a range from 50 nanometers toType: GrantFiled: December 10, 2012Date of Patent: March 21, 2017Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Mark J. Pellerite, John P. Baetzold, John J. Stradinger, Pingfan Wu, Hyacinth L. Lechuga, Manoj Nirmal
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Patent number: 9540494Abstract: Crosslinked silicone foams are provided that can be substantially free of chemical blowing agents or byproducts thereof. These foams can be prepared from polymerizable silicone compositions that include an MQ-water cluster including a silicate MQ resin and a quantity of water dispersed in the silicate MQ resin and a silicone fluid, wherein the MQ-water cluster and silicone fluid collectively provide a inverted emulsion having a continuous and a discontinuous phase, the continuous phase including the silicone fluid and the discontinuous phase including the MQ-water cluster.Type: GrantFiled: September 3, 2013Date of Patent: January 10, 2017Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Junkang J. Liu, Pingfan Wu, Feng Bai, David A. Ylitalo
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Publication number: 20150259495Abstract: Crosslinked silicone foams are provided that can be substantially free of chemical blowing agents or byproducts thereof. These foams can be prepared from polymerizable silicone compositions that include an MQ-water cluster including a silicate MQ resin and a quantity of water dispersed in the silicate MQ resin and a silicone fluid, wherein the MQ-water cluster and silicone fluid collectively provide a inverted emulsion having a continuous and a discontinuous phase, the continuous phase including the silicone fluid and the discontinuous phase including the MQ-water cluster.Type: ApplicationFiled: September 3, 2013Publication date: September 17, 2015Inventors: Junkang J. Liu, Pingfan Wu, Bai Feng, David A. Ylitalo
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Patent number: 9073179Abstract: A method of making shaped ceramic abrasive particles includes cutting a layer of ceramic precursor material using a laser beam and forming shaped ceramic precursor particles. Further thermal processing provides shaped ceramic abrasive particles. Shaped ceramic abrasive particles producible by the methods and abrasive articles containing them are also disclosed.Type: GrantFiled: October 21, 2011Date of Patent: July 7, 2015Assignee: 3M Innovative Properties CompanyInventors: Dennis G. Welygan, Charles J. Studiner, IV, Dwight D. Erickson, Edward J. Woo, Pingfan Wu
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Patent number: 9045654Abstract: Multi-layer articles capable of forming color images are provided. The articles include a multi-layer construction with at least two layers in which at least one of the layers includes a thermally activatable composition. The thermally activatable composition includes a non-linear light to heat converter composition and a color forming compound. Upon activation with a light source an image forms.Type: GrantFiled: May 4, 2009Date of Patent: June 2, 2015Assignee: 3M Innovative Properties CompanyInventors: Pingfan Wu, Douglas A. Dunn, Dennis E. Vogel, Stanley C. Busman
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Patent number: 9033765Abstract: A coated abrasive article comprises an abrasive layer secured to a backing. The abrasive layer comprises abrasive particles secured by at least one binder to a first major surface of the backing. A supersize is disposed on at least a portion of the abrasive layer. The coated abrasive article has a melt flow zone adjacent to an edge of the coated abrasive article, wherein the melt flow zone has a maximum width of less than 100 micrometers, and the melt flow zone has a maximum height of less than 40 micrometers. Methods of using infrared lasers to ablate coated abrasive articles are also disclosed, wherein a laser wavelength is matched to a component of the coated abrasive article.Type: GrantFiled: July 23, 2010Date of Patent: May 19, 2015Assignee: 3M Innovative Properties CompanyInventors: Edward J. Woo, Pingfan Wu, Patrick R. Fleming, Ian R. Owen, Schoen A. Schuknecht, Frederick P. LaPlant
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Publication number: 20140332254Abstract: A transparent electrical conductor (10; 20), comprising a transparent substrate (14; 201); a composite layer (18; 28) comprising an electrically conductive layer (12) disposed on at least a portion of a major surface of the transparent substrate (14; 201) and comprising a plurality of interconnecting metallic nanowires, and a polymeric overcoat layer (16) disposed on at least a portion of the electrically conductive layer (12); wherein a pattern in the composite layer includes an x-axis and a y-axis of an x-y plane of the composite layer and a z-axis into the x-y plane of the composite layer, and the pattern defines a plurality of electrically conductive regions (24, 24?) in the x-y plane of the composite layer (18; 28), wherein the electrically conductive regions (24, 24?) are separated from each other by electrically insulative traces (21), each of which defines a valley into the z-axis of the x-y plane of the composite layer (18; 28), the valley having a maximum depth (27) in a range from 50 nanometers toType: ApplicationFiled: December 10, 2012Publication date: November 13, 2014Inventors: Mark J. Pellerite, John P. Baetzold, John J. Stradinger, Pingfan Wu, Hyacinth L. Lechuga, Manoj Nirmal
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Patent number: 8846160Abstract: A method for building three-dimensional articles using a thermal polymerization process in provided. The articles are built by using a composition that includes a thermally polymerizable composition, a thermal initiator, and a nonlinear light-to-heat conversion material such as a reverse saturable dye. The article is built by the sequential exposure of adjacent voxels with a laser beam. Microlens arrays can be used to expose more than one voxel at a time.Type: GrantFiled: November 11, 2009Date of Patent: September 30, 2014Assignee: 3M Innovative Properties CompanyInventors: Pingfan Wu, Ying-Yuh Lu, Robin E. Wright, Robert J. DeVoe, Travis L. Potts, Douglas S. Dunn, Wayne S. Mahoney, Dong-Wei Zhu
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Patent number: 8771919Abstract: A process to mark a multilayered article with a laser (20). The multilayered article (10) includes a laser-markable layer (14) having at least one organic polymer and at least one light-sensitive pigment therein, and including at least one release agent associated with the laser-markable layer. Laser-marking of the laser-markable layer is accomplished by directing laser radiation (22) into the multilayered article through the release agent (12) to induce an interaction between the light-sensitive pigment and the organic polymer. As a result of the interaction, a visually perceptible marking (16) is formed in the article. The laser-marked article includes a laser-markable layer and a first release agent associated with a surface of the laser-markable layer. The marking(s) in the laser-markable layer is visible through the layer of release agent, and the marking is a result of the laser-induced interaction between the light-sensitive pigment and the organic polymer.Type: GrantFiled: August 31, 2010Date of Patent: July 8, 2014Assignee: 3M Innovative Properties CompanyInventors: Pingfan Wu, Junkang Jacob Lui, Robert L. W. Smithson, Rachel M. Lucking, Panu K. Zoller, Jeffrey O. Emslander, Kanta Kumar