Patents Assigned to 3M
  • Optical film stack including retardation layer
    Patent number: 11506926
    Abstract: Optical film stacks are described. More particularly, optical film stacks including a half-wave retardation layer are described. Achromatic half-wave retardation layers, including achromatic half-wave layers formed from a quarter-wave and a three-quarters-wave retardation layer, are described. Film stacks including reflective polarizers tuned to reduce wavelength dispersion of the half-wave retardation layer are also described.
    Type: Grant
    Filed: September 10, 2018
    Date of Patent: November 22, 2022
    Assignee: 3M Innovative Properties Company
    Inventors: Sun-Yong Park, Song-Geun Lee, Matthew B. Johnson, Adam D. Haag
  • Tetrahedral abrasive particles in abrasive articles
    Patent number: 11505730
    Abstract: Various embodiments disclosed relate to an abrasive article (10). The abrasive article (10 includes a backing (12) defining a major surface. The abrasive article (10) includes an abrasive layer including a plurality of tetrahedral abrasive particles (16) attached to the backing (12). The tetrahedral abrasive particles (16) include four faces joined by six edges terminating at four vertices (40, 42, 44, 46). Each one of the four faces contacts three of the four faces, and a major portion of the tetrahedral abrasive particles (16) have at least one of the vertices (40, 42, 44, 46) oriented in substantially a same direction.
    Type: Grant
    Filed: May 11, 2018
    Date of Patent: November 22, 2022
    Assignee: 3M Innovative Properties Company
    Inventors: Laura M. Lara Rodriguez, Chainika Jangu, Scott R. Culler, Negus B. Adefris, Gregory S. Mueller, Jon T. Schwartz, Brian G. Koethe, Robinette S. Alkhas, Ronald D. Apple, Ernest L. Thurber
  • Fall-protection apparatus comprising friction brake
    Patent number: 11504557
    Abstract: A non-motorized fall-protection apparatus, comprises a drum, and a rotationally-activated braking device that comprises at least one pawl and at least one ratchet with at least one tooth that is engagable by an engaging end of the at least one pawl, wherein the rotationally-activated braking device comprises a limited-use, constant-contact friction brake comprising at least one layer of friction material with a friction-braking surface and at least one rotatable member with a contact surface that is in contact with the friction-braking surface of the layer of friction material.
    Type: Grant
    Filed: July 11, 2018
    Date of Patent: November 22, 2022
    Assignee: 3M Innovative Properties Company
    Inventors: Michael A. Boraas, Keith G. Mattson
  • Block copolymers with a polydiorganosiloxane block and a phosphate or phosphonate containing block
    Patent number: 11505637
    Abstract: A block copolymer is provided that includes a first block having pendant phosphate and/or phosphonate groups and a second block that contains pendant poly(dialkylsiloxane) groups. Compositions containing the block copolymer as well as articles that include the block copolymer are also provided. The block copolymer can be used to provide a surface that is easy to clean and/or that is resistant to oil and grease without the use of fluorinated materials.
    Type: Grant
    Filed: September 11, 2020
    Date of Patent: November 22, 2022
    Assignee: 3M Innovative Properties Company
    Inventors: Semra Colak Atan, Federica Sgolastra, George W. Griesgraber
  • Compositions and methods of making a polymerized composition
    Patent number: 11505653
    Abstract: A composition comprising at least one terminally-unsaturated diarylsulfide compound represented by the formula: wherein each R represents an allyl group or a propargyl group. The composition may further comprise an organic polythiol, and optionally a free-radical initiator, and may be formulated as a two-part polymerizable composition. Methods of polymerizing the compositions are also disclosed.
    Type: Grant
    Filed: July 17, 2018
    Date of Patent: November 22, 2022
    Assignee: 3M Innovative Properties Company
    Inventors: Wayne S. Mahoney, Saswata Chakraborty, Guy D. Joly, Jonathan A. Anim-Addo
  • Wipe with a guanidinyl-containing polymer
    Patent number: 11505769
    Abstract: A wipe article includes a substrate, a cationic coating disposed on a surface of the substrate, distributed throughout the substrate, or both. The cationic coating contains a guanidinyl-containing polymer that is crosslinked and bound to the substrate. The substrate includes sponge, nonwoven fabric, or woven fabric. The wipes are useful for removing microorganisms from a microorganism-contaminated surface and also for reducing re-contamination of the cleaned surface or transfer to another surface of the removed microorganisms.
    Type: Grant
    Filed: October 21, 2020
    Date of Patent: November 22, 2022
    Assignee: 3M Innovative Properties Company
    Inventors: Steven P. Swanson, Jerald K. Rasmussen, George W. Griesgraber, Andrew W. Vail, Andrew S. Waller
  • Flexible hardgoods with enhanced peel removability
    Patent number: 11503929
    Abstract: The present disclosure provides adhesive mounting articles that can be removed from surfaces without damage by having reduced contribution of a hardgood to the peel force generated by the adhesive article during removal. In some instances, this can be accomplished by a hardgood that is flexible in a peel direction and rigid in a weight hanging direction. Such hardgoods may include a plurality of minimally connected body segments arranged about the transverse axis of the hardgood body.
    Type: Grant
    Filed: December 18, 2019
    Date of Patent: November 22, 2022
    Assignee: 3M Innovative Properties Company
    Inventors: Payam Khodaparast, Erik M. Anderson, Kevin W. Weber
  • Adaptive electronic hearing protection device
    Patent number: 11504278
    Abstract: An electronic hearing protection device is provided. The electronic hearing protection device includes an amplifier and a speaker to relay sounds, such as conversations, to the user of the hearing protection. The hearing protection device provides adaptive gunshot recognition and suppression technology.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: November 22, 2022
    Assignee: 3M Innovative Properties Company
    Inventors: Oscar M. Hemberg, Eric O. Hemberg, Henrik M. Fransson, Gregory G. Jager, Douglas D. Fletcher
  • Flexible device including conductive traces with enhanced stretchability
    Patent number: 11503720
    Abstract: Flexible devices including conductive traces with enhanced stretchability, and methods of making and using the same are provided. The circuit die is disposed on a flexible substrate. Electrically conductive traces are formed in channels on the flexible substrate to electrically contact with contact pads of the circuit die. A first polymer liquid flows in the channels to cover a free surface of the traces. The circuit die can also be surrounded by a curing product of a second polymer liquid.
    Type: Grant
    Filed: September 12, 2019
    Date of Patent: November 15, 2022
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Saagar Shah, Mikhail L. Pekurovsky, Ankit Mahajan, Lyudmila A. Pekurovsky, Jessica Chiu, Jeremy K. Larsen, Kara A. Meyers, Teresa M. Goeddel, Thomas J. Metzler, Jonathan W. Kemling, Richard J. Pokorny, Benjamin R. Coonce, Chad M. Amb, Thomas P. Klun
  • Retroreflecting article with contrast reduction layer
    Patent number: 11500138
    Abstract: Retroreflecting articles are described. In particular, retroreflecting articles including retroreflecting layers and contrast reduction layers are described. The contrast reduction layer decreases the near infrared retroreflective efficiency of the retroreflecting substrate by more than 50%.
    Type: Grant
    Filed: February 19, 2018
    Date of Patent: November 15, 2022
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventor: John A. Wheatley
  • Removable film forming gel compositions featuring adhesion promoters
    Patent number: 11497828
    Abstract: Film-forming gel compositions, useful in creating conformable and flexible gel bandages, can be formulate from a film-forming polymer, an amine-rich adhesion promoter, and a volatile solvent. The gel compositions form relatively thick films when dried on tissue, and can exhibit enhanced breathability to promote wound healing.
    Type: Grant
    Filed: February 2, 2021
    Date of Patent: November 15, 2022
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Katie F. Wlaschin, George W. Griesgraber, Alexi J. Young, Semra Colak Atan, Delony L. Langer-Anderson, Junia M. Pereira, Michael J. Solberg
  • Multilayer films and adhesive tapes
    Patent number: 11498320
    Abstract: Multilayer films and adhesive tapes that include such films, wherein the multilayer films include plasticized polyvinyl chloride and optionally one or more fillers.
    Type: Grant
    Filed: July 24, 2017
    Date of Patent: November 15, 2022
    Assignee: 3M Innovative Properties Company
    Inventors: Christopher J. Rother, Jose P. De Souza, Robert B. Rosner, Jacob D. Young, Jeffrey O. Emslander, Gregg A. Patnode, Ann R. Fornof, Rafael Garcia-Ramirez, Jay M. Krieger
  • Curable fluoropolymer compositions comprising a compound containing a phthalonitrile and an olefinic bond and cured articles therefrom
    Patent number: 11499032
    Abstract: Described herein are fluoropolymer compositions comprising a compound of Formula (I) wherein X1 is selected from O or S; L is a divalent linking group comprising at least one aromatic ring; O and X2 comprises a carbon-carbon double bond. In one embodiment, the phthalonitrile-containing compound is added to a composition comprising (i) a fluorinated elastomeric gum, wherein the fluorinated elastomeric gum comprises a fluoropolymer having a cure-site and (ii) a peroxide curing system.
    Type: Grant
    Filed: August 18, 2020
    Date of Patent: November 15, 2022
    Assignee: 3M Innovative Properties Company
    Inventors: Michael H. Mitchell, Benjamin J. Anderson, Gregg D. Dahlke, Tatsuo Fukushi
  • TUBE SECUREMENT SYSTEM
    Publication number: 20220355077
    Abstract: The disclosed tape system comprises a first tape and second tape each with an adhesive that interact to secure a device such as tubing. The first tape and second tape each have a longitudinally extending midsection and laterally extending legs. The first tape overlaps the device, while the second tape is under the device, but with the legs of the second tape overlapping the legs of the first tape. This overlapping connection of the first tape and second tape strongly secures the tubing.
    Type: Application
    Filed: September 22, 2020
    Publication date: November 10, 2022
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: JAMES M. SIERACKI, KRYSTAL J. SCHEIBEL
  • TUBE SECUREMENT TAPE
    Publication number: 20220355078
    Abstract: The disclosed securement tape strip comprises a tape having a midsection, a stabilizing section, and a wrapping strip. The tape strip has an adhesive along the midsection to adhere the tape strip to a substrate. The wrapping strip can include an adhesive for wrapping the wrapping strip around a device to hold the device securely in place on the substrate. The tape strip can include a perforation set along the midsection. The perforation set can be useful in removal of the tape.
    Type: Application
    Filed: October 20, 2020
    Publication date: November 10, 2022
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: JAMES M. SIERACKI, KRYSTAL J. SCHEIBEL
  • Removable film forming gel compositions and methods for their application
    Patent number: 11491255
    Abstract: Film forming gel compositions, useful in creating conformable and flexible gel bandages, can be formulate from a film-forming polymer, a tackifier, and a volatile solvent. The film forming gels can also include antiseptics, cationic polymer coagulants, fillers, and other additives. The gel compositions form relatively thick films when dried on tissue, and can exhibit enhanced breathability to promote wound healing.
    Type: Grant
    Filed: April 4, 2016
    Date of Patent: November 8, 2022
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Delony L. Langer-Anderson, George W. Griesgraber, Semra Colak Atan, Junia M. Pereira, Katie F. Wlaschin, Alexi J. Young, Robert A. Asmus, Petra L. Kohler Riedi, David S. Hays, Jerald K. Rasmussen, Michael J. Solberg
  • High contrast optical film having specified transmittance and reflectance of polarized light
    Patent number: 11493677
    Abstract: Optical films are disclosed that include a plurality of interference layers. Each interference layer reflects or transmits light primarily by optical interference. The total number of the interference layers is less than about 1000. For a substantially normally incident light in a predetermined wavelength range, the plurality of interference layers has an average optical transmittance greater than about 85% for a first polarization state, an average optical reflectance greater than about 80% for an orthogonal second polarization state, and an average optical transmittance less than about 0.2% for the second polarization state.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: November 8, 2022
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Adam D. Haag, Timothy J. Nevitt, Carl A. Stover, Andrew J. Ouderkirk, Robert D. Taylor, Zhaohui Yang
  • Fluorinated copolymer having sulfonyl pendant groups and compositions and articles including the same
    Patent number: 11492431
    Abstract: The copolymer includes divalent units represented by formula —[CF2—CF2]—, divalent units represented by formula; and one or more divalent units independently represented by formula: The copolymer has an —SO2X equivalent weight in a range from 300 to 2000. A polymer electrolyte membrane that includes the copolymer and a membrane electrode assembly that includes such a polymer electrolyte membrane are also provided.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: November 8, 2022
    Assignee: 3M Innovative Properties Company
    Inventors: Lisa P. Chen, Gregg D. Dahlke, Denis Duchesne, Steven J. Hamrock, Klaus Hintzer, Markus E. Hirschberg, Arne Thaler, Tilman C. Zipplies
  • Modified aluminum nitride particles and methods of making the same
    Patent number: 11492495
    Abstract: A modified aluminum nitride particle comprises an aluminum nitride core and a shell surrounding the aluminum nitride core. The shell comprises a crosslinked organic polymer. Methods of making the modified aluminum nitride particle by admicellar polymerization are also disclosed.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: November 8, 2022
    Assignee: 3M Innovative Properties Company
    Inventors: Nathan E. Schultz, Li Yao, Tien T. Wu, Gerry A. Hoffdahl, Jimmie R. Baran, Jr.
  • Tube securement device
    Patent number: D969598
    Type: Grant
    Filed: May 31, 2019
    Date of Patent: November 15, 2022
    Assignee: 3M Innovative Properties Company
    Inventors: James M. Sieracki, Michael J. Turnbull, Denise J. Ziemann, Kimberly A. Schommer, Amanda C. Engler