Patents Assigned to 3M
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Patent number: 11577492Abstract: A display film includes a transparent glass layer having a thickness of 250 micrometers or less, or in a range from 25 to 100 micrometers. A transparent energy dissipation layer is fixed to the transparent glass layer. The transparent energy dissipation layer has a glass transition temperature of 27 degrees Celsius or less, a Tan Delta peak value of 0.5 or greater, or from 1 to 2 and a Young's Modulus (E?) greater than 0.9 MPa over a temperature range of ?40 degrees Celsius to 70 degrees Celsius. In a preferred embodiment, the transparent energy dissipation layer comprises a cross-linked polyurethane layer or a cross-linked polyurethane acrylate layer.Type: GrantFiled: September 21, 2017Date of Patent: February 14, 2023Assignee: 3M Innovative Properties CompanyInventors: Joseph W. Woody, V, David Scott Thompson, Catherine A. Leatherdale, Ryan M. Braun, Michael A. Johnson, Steven D. Solomonson, John J. Stradinger, Lyudmila A. Pekurovsky, Joseph D. Rule, Peter D. Condo
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Patent number: 11582548Abstract: A ring-shaped cushion for a hearing protector or audio headset. The cushion has a circumferential contact pad for sealing on a wearer's head and an attachment for sealing with an earmuff. The cushion further has a sound insulation tube that inwardly defines an inner space. The sound insulation tube extends between the contact pad and the attachment. The cushion has a ventilation passage that extends entirely through the cushion between an inlet opening in the contact pad and an area outside of the inner space. The cushion may further include one or more physiological sensors to monitor the health of a wearer.Type: GrantFiled: November 21, 2018Date of Patent: February 14, 2023Assignee: 3M Innovative Properties CompanyInventors: Van Cuong Bui, Caroline M. Ylitalo, Caitlin E. Meree, Patrick Hjort, William Bedingham, Assumpta A. G. Bennaars-Eiden, Daniel B. Taylor, Jonas A. Nilsson, Richard C. Webb, Andrew W. Long, Henning T. Urban
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Patent number: 11573377Abstract: A coupling unit includes a light coupling element comprising an attachment area for receiving and permanently attaching to a plurality of optical waveguides. One or more grooves are provided at the attachment area. Each groove is configured to receive an optical waveguide and defined by a bottom surface, a first region, a second region, and an opening. The first region is defined between the bottom surface and the second region. The first region in cross section has substantially parallel sidewalls separated by a spacing. The second region is disposed between the first region and the opening. A width of the opening is greater than the spacing.Type: GrantFiled: October 3, 2016Date of Patent: February 7, 2023Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Michael A. Haase, Terry L. Smith
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Patent number: 11572492Abstract: Modified adhesive layers are prepared by contacting an adhesive layer to a modified microstructured release liner. The modified release liner has a release layer surface with a set of microstructured depressions and a discontinuous pattern of ink material located on the surface of the release layer. A portion of the discontinuous pattern of ink material overlaps with and is located within some of the depressions. The ink material comprises a non-adhesive but adhesively transferrable material, or an adhesive material. Upon removal of the adhesive from the release liner, the ink material transfers to the adhesive surface.Type: GrantFiled: June 6, 2019Date of Patent: February 7, 2023Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Kui Chen-Ho, Patrick J. Yeshe, Matthew S. Stay, Matthew R. D. Smith, Anish Kurian, Ross E. Behling
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Patent number: 11576003Abstract: A method and apparatus for objectively assessing acoustical performance of an in-ear device having a passageway extending there through use a dual microphone probe that removably engages the passageway. The acoustical performance of the in-ear device is performed with the in-ear device inserted into the ear canal of the user and a reference sound source. A clip holding the probe in an acoustic near field of the sound source permits real time calibration thereof. The method and apparatus allow on-site and in-situ measurement of a predicted personal attenuation rating of the device, a subject-fit re-insertion test, an acoustic seal test, a rating test, a stability and reliability test, as well as a protection test of the device with an assessment of a filtered predicted exposure level at the ear for a specific noise exposure level. The apparatus may be simply housed along with the sound source for in-field evaluation tests.Type: GrantFiled: November 1, 2021Date of Patent: February 7, 2023Assignee: 3M Innovative Properties CompanyInventors: Jeremie Voix, Frederic Laville
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Patent number: 11573361Abstract: Rolls of film are described. In particular, rolls of film including a multilayer birefringent reflective polarizer and a polyvinyl alcohol layer are described. Such films exhibit low variation in pass axis across a full crossweb width.Type: GrantFiled: June 26, 2018Date of Patent: February 7, 2023Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Kristy A. Gillette, Carl A. Stover, Matthew B. Johnson
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Patent number: 11571490Abstract: An article having anti-microbial effect is provided. The article includes an occlusive layer and a substrate having a nanostructured surface. The nanostructured surface is coated with a metal oxide layer and the metal oxide layer includes a metal oxide.Type: GrantFiled: June 29, 2016Date of Patent: February 7, 2023Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Ta-Hua Yu, Junkang Jacob Liu, Narina Y. Stepanova, Badri Veeraraghavan, Moses M. David
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Patent number: 11571591Abstract: A respirator device having an elastomeric sleeve is provided. In an exemplary embodiment, a respirator device as described herein includes a rigid nozzle element and a body including a receiver having an elastomeric sleeve. The elastomeric sleeve defines a channel, and the elastomeric sleeve is configured to deform around the nozzle element when the nozzle element is inserted into the channel.Type: GrantFiled: August 26, 2020Date of Patent: February 7, 2023Assignee: 3M Innovative Properties CompanyInventor: David M. Blomberg
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Patent number: 11571284Abstract: A custom tool for forming a dental restoration in a mouth of a patient includes a mold body providing for a customized fit with at least one tooth of the patient. The mold body includes a facial portion forming a facial surface corresponding with a facial surface of the tooth, and a separate lingual portion forming a lingual surface corresponding with a lingual surface of the tooth. The mold body is configured to combine with the tooth of the patient to form a mold cavity encompassing missing tooth structure of the tooth.Type: GrantFiled: June 16, 2020Date of Patent: February 7, 2023Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: James D. Hansen, Joseph C. Dingeldein, Shannon D. Scott, Joshua K. Schroeder, Bruce R. Broyles, Mary C. Doruff
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Patent number: 11567239Abstract: The disclosed aliphatic thermoplastic polyurethane composition is well suited for use in thin, flexible light directing articles to impart flexibility, toughness, or protection to the light directing articles that contain optically active elements. The disclosed aliphatic thermoplastic polyurethanes have improved thermostability at higher temperatures. Specifically, the disclosed aliphatic thermoplastic polyurethanes have a cross-over temperature greater than 110° C. In one embodiment, the cross-over temperature is greater than 130° C. In one embodiment, the cross-over temperature is less than 170° C. and a Tg greater than 35° C. and less than 70° C.Type: GrantFiled: December 8, 2020Date of Patent: January 31, 2023Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Bimal V. Thakkar, Jay M. Jennen, Robert D. Hamann, Ryan M. Braun, Robert F. Watkins, Joseph D. Rule, Todd D. Jones, Charlie C. Ho
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Patent number: 11567253Abstract: A patterned optical retarder including non-overlapping first (21) and second (27) regions with respective first and second major surfaces having different RMS surface roughnesses. For substantially normally incident light over a wavelength range from about 400 nm to about 1000 nm, the optical retarder has different retardances in the respective first and second regions.Type: GrantFiled: October 24, 2018Date of Patent: January 31, 2023Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Jo A. Etter, Stephen P. Maki, Michael L. Steiner, James A. Phipps
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Patent number: 11567146Abstract: Techniques, systems and articles are described for monitoring electrical equipment of a power grid and predicting likelihood failure events of such electrical equipment. In one example, a sensing device is configured to couple to an electrical power cable. The sensing device includes a plurality of concentric layers and a monitoring device. The plurality of concentric layers include a first layer, second layer, and third layer. The first layer is configured to concentrically surround a central conductor of the electrical cable and includes an insulating material. The second layer includes a conducting material. The third layer includes a resistive material configured to resist electrical flow between the second layer and a ground conductor exterior to the third layer. The monitoring device includes a sensor and communication unit configured to output data indicative of the sensor data.Type: GrantFiled: September 5, 2019Date of Patent: January 31, 2023Assignees: 3M Innovative Properties Company, Connected Intellicence Systems Ltd.Inventors: Douglas B. Gundel, Eyal Doron, Lior Embon, Udi Blich
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Patent number: 11565495Abstract: Organic light emitting diode (OLED) devices are disclosed that include a first layer; a backfill layer having a structured first side and a second side; a planarization layer having a structured first side and a second side; and a second layer; wherein the second side of the backfill layer is coincident with and adjacent to the first layer, the second side of the planarization layer is coincident with and adjacent to the second layer, the structured first side of the backfill layer and structured first side of the planarization layer form a structured interface, the refractive index of the backfill layer is index matched to the first layer, and the refractive index of the planarization layer is index matched to the second layer.Type: GrantFiled: June 20, 2022Date of Patent: January 31, 2023Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Martin B. Wolk, Michael Benton Free, Margaret M. Vogel-Martin, Evan L. Schwartz, Mieczyslaw H. Mazurek, Terry O. Collier
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Patent number: 11568080Abstract: At least some aspects of the present disclosure feature systems and methods for obfuscating data. The method includes the steps of receiving an input data stream including a sequence of n-grams, mapping at least some of the sequence of n-grams to corresponding dictionary terms using a dictionary, and disposing the corresponding tokens to an output data stream.Type: GrantFiled: November 10, 2014Date of Patent: January 31, 2023Assignee: 3M Innovative Properties CompanyInventors: Brian J. Stankiewicz, Eric C. Lobner, Richard H. Wolniewicz, William L. Schofield
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Patent number: 11559938Abstract: A method of layerwise building up an object from at least a first and a second light hardenable resin on a 3D printing device, and a 3D printing device that is configured to perform such a method. The 3D printing device has a build platform on which the object can be built up, a light-transmissive carrier comprising a plurality of recesses and a light projector for projecting a light-pattern through the carrier.Type: GrantFiled: July 17, 2019Date of Patent: January 24, 2023Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Andreas J. Boehm, Malte Korten
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Patent number: 11560497Abstract: An adhesive sheet comprising a base material, a primer layer, and an adhesive layer cured by radiation, arranged in this order. The primer layer comprises a (meth)acrylic polymer having a nitrogen-containing group and a polymer having a polyoxyalkylene group.Type: GrantFiled: May 20, 2016Date of Patent: January 24, 2023Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventor: Aizoh Sakurai
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Patent number: 11560632Abstract: A water electrolyzer comprises a membrane, a cathode and an anode. The membrane comprises a first membrane layer comprising a first ion-conductive polymer, a second membrane layer comprising a second ion-conductive polymer, and a platinized nanostructured layer disposed between the first layer and the second layer. The platinized nanostructured layer comprises close-packed whiskers having at least one of platinum or platinum oxide disposed thereon. The cathode is disposed on the membrane and comprises a first catalyst consisting essentially of both metallic Pt and Pt oxide. The anode is disposed on the opposite surface of the membrane and comprises a second catalyst comprising at least 95 percent by weight of collectively metallic Ir and Ir oxide, calculated as elemental Ir, based on the total weight of the second catalyst, wherein at least one of metallic Ir or Ir oxide is present. Membranes and methods of making them are also disclosed.Type: GrantFiled: September 27, 2019Date of Patent: January 24, 2023Assignee: 3M Innovative Properties CompanyInventors: Jiyoung Park, Krzysztof A. Lewinski, Sean M. Luopa, Andrew J. L. Steinbach
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Patent number: 11560496Abstract: According to various embodiments of the present disclosure, a composition includes about 5 to about 40 parts by weight of a solute copolymer component. The solute component optionally has one Tg or Tm of at least 25° C. The composition further includes about 60 to about 95 parts by weight of a solvent monomer. The solvent monomer component includes (meth)acrylate monomers and a multifunctional acrylate. The sum of the solute copolymer component and the solvent monomer component is 100 parts by weight. The composition further includes about 5 to about 100 parts of a plasticizer, relative to the 100 parts.Type: GrantFiled: February 19, 2018Date of Patent: January 24, 2023Assignee: 3M Innovative Properties CompanyInventors: Ann R. Fornof, Carla S. Thomas, Tien Yi T. H. Whiting, Payam Khodaparast, Nathaniel K. Naismith, Brett J. Sitter, James A. Thielen
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Patent number: 11556892Abstract: A method for tracking and storing unique asset information with respect to at least one asset comprises providing at least one asset having an associated tag, capturing the tag and associated asset properties to a device, wherein the associated asset properties include the global position of the device at the time of capturing the tag with the device, storing the tag and asset properties as asset information to a database wherein the asset information is associated with the tag and global position of the device, and displaying asset information associated with at least the stored tag.Type: GrantFiled: September 29, 2021Date of Patent: January 17, 2023Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Douglas B. Gundel, Corey D. Renfro, Rama Raju B. Dutta, Bhargavi Devalla
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Patent number: 11557384Abstract: A graphical user interface, referred to herein as a virtual whiteboard, that provides both: (1) an automatically prioritized display of information related to a particular patient that is tailored to the current user of the system, and (2) a “scratch pad” area in which multiple users of the system may input free-form text and other data for sharing with other users of the system. When each user of the system accesses the virtual whiteboard, the system: (1) automatically prioritizes the patient information based on characteristics of the user and displays the automatically prioritized patient information to that user, and (2) displays the contents of the scratch pad to the user. As a result, the whiteboard displays both information that is tailored to the current user and information that is common to all users (i.e., not tailored to any particular user).Type: GrantFiled: September 28, 2020Date of Patent: January 17, 2023Assignee: 3M Innovative Properties CompanyInventors: Juergen Fritsch, Vasudevan Jagannathan