Patents Assigned to 3M
  • UV curable epoxy/acrylate adhesive composition
    Patent number: 11370944
    Abstract: An adhesive composition is described comprising a tetrahydrofurfuryl (meth)acrylate copolymer; an epoxy resin; a polyether polyol; and a hydroxy-functional film-forming polymer. The adhesive may be used in structural and semi-structural bonding applications.
    Type: Grant
    Filed: May 11, 2020
    Date of Patent: June 28, 2022
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Kathleen S. Shafer, Thomas Q. Chastek, Cyrus A. Anderson
  • Adhesive article and methods of making and using the same
    Patent number: 11370940
    Abstract: An adhesive article comprising first and second tacky latent adhesive layers disposed on respective first and second opposed major surfaces of a substrate. Each of the first and second tacky latent adhesive layers independently comprises at least one polymerizable component, and a redox initiator system comprising a transition metal complex that participates in a redox cycle, an oxidizing agent, and a blocked reducing agent represented by the formula ((I). Each of R1 and R2 are independently H, an alkyl, an aryl, or RPhoto5 with the proviso that at least one of R1 and R2 is RPhoto. RPhoto represents a photoremovable group. Each of R3 and R4 independently represents H, an alkyl group, or an aryl group comprising a monovalent ester, ether, urethane, or carbonate group. Methods of making and using the adhesive articles are also disclosed.
    Type: Grant
    Filed: May 16, 2018
    Date of Patent: June 28, 2022
    Assignee: 3M Innovative Properties Company
    Inventors: Erik M. Townsend, Shantanu R. Ranade, William H. Moser, Kathleen S. Shafer, Michael A. Kropp, Jayshree Seth, Ross E. Behling
  • Optical articles and systems interacting with the same
    Patent number: 11373076
    Abstract: Optical articles including a spatially defined arrangement of a plurality of data rich retroreflective elements, wherein the plurality of retroreflective elements comprise retroreflective elements having at least two different retroreflective properties and at least two different optical contrasts with respect to a background substrate when observed within an ultraviolet spectrum, a visible spectrum, a near-infrared spectrum, or a combination thereof.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: June 28, 2022
    Assignee: 3M Innovative Properties Company
    Inventors: Michael A. McCoy, Anne C. Gold, Silvia Geciova-Borovova Guttmann, Glenn E. Casner, Timothy J. Gardner, Steven H. Kong, Gautam Singh, Jonathan T. Kahl, Nathan J. Anderson, Catherine L. Aune, Caroline M. Ylitalo, Britton G. Billingsley, Muhammad J. Afridi, Kui Chen-Ho, Travis L. Potts, Robert W. Shannon, Guruprasad Somasundaram
  • High solar-reflectivity roofing granules utilizing low absorption components
    Patent number: 11371244
    Abstract: An uncolored roofing granule including a low solar absorption base and a low solar absorption and solar opaque coating presented on the base, the coating including a binder, a pigment, wherein the binder includes a curable component and a non-clay, thermally reactive curing agent.
    Type: Grant
    Filed: April 8, 2013
    Date of Patent: June 28, 2022
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Feng Bai, Kenton D. Budd, Rebecca L. Everman, Craig W. Lindsay
  • Substituted imidazo[4,5-c]quinoline compounds with an N-1 branched group
    Patent number: 11370788
    Abstract: Imidazo[4,5-c]quinoline compounds having a substituent that is attached at the N?1 position by a branched group, single enantiomers of the compounds, pharmaceutical compositions containing the compounds, and methods of making the compounds are disclosed. Methods of use of the compounds as immune response modifiers, for inducing cytokine biosynthesis in humans and animals, and in the treatment of diseases including infectious and neoplastic diseases are also disclosed.
    Type: Grant
    Filed: February 25, 2019
    Date of Patent: June 28, 2022
    Assignee: 3M Innovative Properties Company
    Inventors: George W. Griesgraber, Kevin J. Bechtold
  • Earmuff hearing-protection device comprising sound-attenuating members
    Patent number: 11369521
    Abstract: An earmuff hearing-protection device (1) including a non-porous, sound-attenuating body (50) disposed within an interior space (31) defined by a shell (30) of an earmuff of the device, the non-porous, sound-attenuating body including sound-attenuating members (100) arranged and spaced to define a set of high aspect ratio air gaps (e.g. 300) between major side surfaces of neighboring members.
    Type: Grant
    Filed: February 15, 2018
    Date of Patent: June 28, 2022
    Assignee: 3M Innovative Properties Company
    Inventor: Per Ove Almeflo
  • High frequency electromagnetic interference (EMI) composites
    Patent number: 11369050
    Abstract: Electromagnetic interference (EMI) shielding composites and methods of producing the same are described. Carbon nanostructure (CNS) fillers including cross-linked carbon nanotubes (CNTs) and a polymeric encapsulation material are provided, where the carbon nanotubes are encapsulated by the polymeric encapsulation material. The CNS fillers are treated to remove at least a portion of the polymeric encapsulation material. After removing the polymeric encapsulation material, the CNS fillers are mixed with a curable matrix material to obtain EMI shielding composites. In some cases, the removal of the polymeric encapsulation material results in diminished dielectric polarization characteristics for the composites.
    Type: Grant
    Filed: June 2, 2016
    Date of Patent: June 21, 2022
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventor: Dipankar Ghosh
  • Optical filters complementary angular blocking regions
    Patent number: 11366257
    Abstract: An example optical filter may include an angle blocking layer Slaving a first angular light blocking range ?AL relative to a normal axis, and an interference filter adjacent the angle blocking layer having a second angular light blocking range ?IF relative to the normal axis. ?IF and ?AL at least partially overlap. The example optical filter has a predetermined light transmission zone comprising angles from 0° to a maximum light transmission angle ?Tmax relative to a normal axis of the major surface. The example optical filter has a predetermined angular light blocking zone ?B, a union of ?IF and ?AL. An example optical filter may include an interference filter having an incidence angle-dependent reflection band and an absorbing layer having an absorption band. The incidence angle-dependent reflection band and the absorption band may overlap at least one wavelength at least one angle of incidence.
    Type: Grant
    Filed: October 18, 2017
    Date of Patent: June 21, 2022
    Assignee: 3M Innovative Properties Company
    Inventors: John A. Wheatley, Guanglei Du, Gilles J. Benoit, Rolf W. Biernath
  • Air and water barrier article including inelastic porous layer
    Patent number: 11365328
    Abstract: The air and water barrier article includes a polymer-coated inelastic porous layer including a water-vapor permeable polymeric coating disposed on at least one major surface of the inelastic porous layer and an adhesive disposed on a major surface of the polymer-coated inelastic porous layer. The inelastic porous layer can include at least one of surface-modified fibers or natural cellulose fibers. The polymer-coated inelastic porous layer can at least one of a water strike through time of not more than 180 seconds or an absorbance capacity of at least one-half gram per 116 square centimeters. The adhesive may be exposed, in contact with a release surface, or adhered to a surface of a building component. A method of applying the air and water barrier article to a surface of a building component is also disclosed.
    Type: Grant
    Filed: February 21, 2018
    Date of Patent: June 21, 2022
    Assignee: 3M Innovative Properties Company
    Inventors: Taylor M. Seabaugh, Martin J. O. Widenbrant
  • Retroreflective article comprising locally-laminated reflective layers
    Patent number: 11366252
    Abstract: A retroreflective article including a binder layer and a plurality of retroreflective elements. Each retroreflective element includes a transparent microsphere partially embedded in the binder layer. At least some of the retroreflective elements include a reflective layer that is a locally-laminated reflective layer that is embedded between the transparent microsphere and the binder layer. At least some of the locally-laminated reflective layers may be localized reflective layers.
    Type: Grant
    Filed: October 25, 2018
    Date of Patent: June 21, 2022
    Assignee: 3M Innovative Properties Company
    Inventors: Kevin W. Gotrik, Kui Chen-Ho, Scott J. Jones, Michael A. McCoy, Christopher A. Merton, Shri Niwas, Ramasubramani Kuduva Raman Thanumoorthy, Ying Xia
  • Polymer processing additive, compositions, and methods
    Patent number: 11359079
    Abstract: A poly(oxyalkylene) polymer and a metal salt of a carboxylic acid, sulfonic acid, or alkylsulfate, in combination are useful as a polymer processing additive synergist. Polymer processing additive compositions, homogeneously catalyzed olefin compositions, and other extrudable polymer compositions including a poly(oxyalkylene) polymer and a metal salt of a carboxylic acid, sulfonic acid, or alkylsulfate are disclosed. Methods of reducing melt defects during the extrusion of a thermoplastic polymer, which may be a homogeneously catalyzed polyolefin, are also disclosed.
    Type: Grant
    Filed: September 19, 2014
    Date of Patent: June 14, 2022
    Assignee: 3M Innovative Properties Company
    Inventors: Claude Lavallée, Shireen A. Mamun
  • Optical camouflage filter
    Patent number: 11360248
    Abstract: Systems including one or both of a light emitter or a light receiver and an optical filter adjacent one or both of the light emitter or the light receive are described. The optical filter includes a wavelength selective scattering layer that scatters near-infrared light less than visible light. The wavelength selective scattering layer includes a plurality of particles. The plurality of particles have an imaginary refractive index less than 10.
    Type: Grant
    Filed: July 25, 2018
    Date of Patent: June 14, 2022
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Neeraj Sharma, Guanglei Du, Matthew E. Sousa, Jeremy O. Swanson, Jung-Sheng Wu
  • Shaped optical films and methods of shaping optical films
    Patent number: 11358355
    Abstract: Optical films having a curved shaped and methods of shaping optical films are described. A method of shaping an optical film includes the steps of disposing the optical film adjacent first and second rollers spaced apart along a first direction, securing opposing first and second ends of the optical film, providing a curved mold surface, and shaping the optical film by contacting the optical film with the curved mold surface while stretching the optical film along the first direction and keeping a threshold distance between closest points on the optical film contacting the first roller and contacting the curved mold surface less than the width of the optical film to reduce buckling of the optical film.
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: June 14, 2022
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Robert M. Jennings, William T. Fay, Jo A. Etter, Arthur L. Kotz, David J. W. Aastuen
  • Abrasive article
    Patent number: 11358254
    Abstract: Abrasive articles, along with related compositions and methods, are provided. A first aspect relates to an abrasive article comprising a backing and an abrasive layer disposed on a major surface of the backing. The abrasive layer comprises a particulate mixture comprising formed abrasive particles and diluent abrasive particles. Based on the overall weight of the particulate mixture, about 0 wt. % to less than 10 wt. % formed abrasive particles having a substantially monodisperse particle size of from about 80 micrometers to about 120 micrometers; and about greater than 90 wt. % to about 99 wt. % diluent abrasive particles having a median particle size of from about 50 micrometers to about 250 micrometers.
    Type: Grant
    Filed: December 23, 2016
    Date of Patent: June 14, 2022
    Assignee: 3M Innovative Properties Company
    Inventors: Adriana C. Gorgan, Ceni Jacob, Joseph J. Migchels, Yugeun P. Yang
  • Pathway article authentication
    Patent number: 11361562
    Abstract: The disclosure is directed to an article, such as a pathway article or a sheeting. The article includes a physical surface having a code embodied thereon. The code is associated with pathway information in transaction data stored by a blockchain managed by a consensus network of node. The pathway information indicates one or more characteristics of a vehicle pathway, wherein the pathway information provides at least one of: information descriptive of at least a portion of the vehicle pathway, or vehicle operation instructions associated with the portion of the vehicle pathway.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: June 14, 2022
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: James B. Snyder, Justin M. Johnson, James W. Howard
  • Portable detection systems and devices including a detector that detects reflected energy
    Patent number: 11360247
    Abstract: A portable detection system comprises an energy source configured to transmit energy, a retroreflective article, a detector configured to sense retroreflective energy produced by interaction of the energy transmitted from the source and the retroreflective article, and an indicator that indicates the detection of the retroreflective energy, wherein at least one of the energy source and the detector are configured to be worn by a user.
    Type: Grant
    Filed: October 25, 2018
    Date of Patent: June 14, 2022
    Assignee: 3M Innovative Properties Company
    Inventors: Michael A. McCoy, John Allen Wheatley, Gilles J. Benoit, Charles Allen Shaklee
  • Oxy-pyrohydrolysis system and method for total halogen analysis
    Patent number: 11360064
    Abstract: Oxy-pyrohydrolysis articles, systems and methods for total halogen, in particular fluorine analysis are provided. A sample containing halogen elements is provided into a pyrotube for combustion. A combustion-enhancing bed including ceramic fibers or fabrics is disposed inside the pyrotube to enhance the combustion and protect the pyrotube from damage by corrosive gases.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: June 14, 2022
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventor: Phanasouk Vorarath
  • Electronic assembly, electronic apparatus including the same and method for fabricating electronic assembly
    Patent number: 11355453
    Abstract: An electronic assembly according to an embodiment includes: a circuit board including a first edge surface and a trace having an electrical conductivity; an electronic element including a lateral edge spatially spaced apart from the first edge surface, and mounted on the circuit board and electrically connected to the trace; a protection layer including a second edge surface and disposed on the electronic element to substantially cover the electronic element; a magnetic field shielding film including a third edge surface and disposed on the protection layer; and a first metal layer.
    Type: Grant
    Filed: March 5, 2021
    Date of Patent: June 7, 2022
    Assignee: 3M Innovative Properties Company
    Inventors: Jiwoong Kong, Jung Ju Suh, Seong-Woo Woo
  • Optical sensor systems
    Patent number: 11354880
    Abstract: Systems, assemblies, and methods for detecting changes in polarization states are described. Example systems may include a light receiving unit including a sensor and a receiving polarizer. The sensor is configured to sense light from a polarized light source deflected through the receiving polarizer by a light directing article. The sensor is configured to generate a signal indicative a received polarization state of light deflected by the light directing articles. Such systems may be coupled to vehicles and may be useful for sensor-detectable signs, indicia, and markings to facilitate automated or assisted vehicular transport.
    Type: Grant
    Filed: October 25, 2018
    Date of Patent: June 7, 2022
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Jonah Shaver, Susannah C. Clear, John A. Wheatley, Kui Chen-Ho
  • Dosage dispenser
    Patent number: D955881
    Type: Grant
    Filed: February 8, 2021
    Date of Patent: June 28, 2022
    Assignee: 3M Innovative Properties Company
    Inventors: Andreas J. Boehm, Marc Peuker, Giuseppe De Bellis, Stefan Eckstein, Kristina Hinz