Patents Assigned to Minnesota Mining and Manufacturing Company
  • Patent number: 5306758
    Abstract: Curable, crosslinkable compositions and coatings prepared therefrom that can be used to form low-surface energy liners that can be used with aggressive pressure-sensitive adhesives, such as adhesives formed from silicone resins. The release characteristics of these coatings do not diminish upon aging and do not adversely affect the readhesion properties of adhesives that have-come in contact with the coatings. The invention further provides substrates bearing a layer of the composition of the invention. These coated substrates are particularly suitable for release liners, especially differential release liners and low-adhesion backsizes for pressure-sensitive adhesive tapes and sheet materials, especially for pressure-sensitive adhesives derived from silicone resins.
    Type: Grant
    Filed: May 26, 1993
    Date of Patent: April 26, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Mark J. Pellerite
  • Patent number: 5307438
    Abstract: The invention relates to optically transmissive, silica-containing compositions which exhibit a small change of refractive index with respect to temperature changes (dn.sub.g /dT). The compositions are derived from silica sols dispersed in liquid organic polymers. The invention relates to optical systems comprising a plurality of elements that are optically interconnected by means of the inventive composition. An especially preferred embodiment of the invention is the use of the composition within a connector to simultaneously align and join optical fibers.
    Type: Grant
    Filed: August 13, 1992
    Date of Patent: April 26, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Zayn Bilkadi, Marc D. Radcliffe, Novack James C.
  • Patent number: 5306612
    Abstract: 5-Substituted-amino-1,2,3,4-thiatriazoles have been found to be supersensitizers for silver halide photographic emulsions spectrally sensitized to the red region of the electromagnetic spectrum.
    Type: Grant
    Filed: October 18, 1988
    Date of Patent: April 26, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: James B. Philip, Jr., Craig A. Perman, Richard J. Loer, Peter D. Sills
  • Patent number: 5306686
    Abstract: A negative-acting, photothermographic material having a first layer comprising an amine compound and a second layer comprising an amine-reactive dye which undergoes a visible change when in reactive association with the amine compound. The amine compound and the amine-sensitive dye are in non-reactive association at ambient and moderate temperatures, but at elevated temperatures the two components are able to interact to produce a visible change in the heated areas of the material. The materials are particularly suitable for the preparation of overhead projector transparencies.
    Type: Grant
    Filed: May 4, 1992
    Date of Patent: April 26, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Ranjan C. Patel, John H. A. Stibbard, Darren Cooper, Terence W. Baldock, Donald J. Newman, John J. Stofko
  • Patent number: 5306405
    Abstract: A method for preparing a slurry target for use in a sputtering apparatus. The target material is ground into a powder form, and mixed with a solvent to form a slurry. The slurry is poured into a target mold and allowed to slow dry by evaporation at or near room temperature. The target is mechanically stable, can be positioned in any orientation without falling out of the mold, and resists failure from thermal stresses during sputtering.
    Type: Grant
    Filed: June 26, 1992
    Date of Patent: April 26, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Robert D. Lorentz, Joseph H. Sexton
  • Patent number: 5306869
    Abstract: Ribbon cables have lower capacitance, higher impedance, and faster propagation velocities with microporous fibril thermoplastic dielectric insulation, because they have great amounts of air adjacent to the conductors and the improved electrical performance is due in part to the improved crush resistance. Crystallizable thermoplastic polymers having good fibril structure and crush resistance include polyolefins such as polypropylene and polymethylpentene. A layer of metal adhered to the dielectric insulation provides improved transmission line properties.
    Type: Grant
    Filed: September 22, 1992
    Date of Patent: April 26, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Denis D. Springer, Harry A. Loder
  • Patent number: 5306319
    Abstract: Surface treating articles having varying degree of smear-resistance and their methods of manufacture are presented. One preferred article is characterized by an organic matrix substantially engulfed by a novel, tough, adherent elastomeric resinous binder system comprising the reaction product of either(1) a polyurethane prepolymer, or(2) a polyurethane polymer emulsion with an epoxy-functional material and an amine-functional material in an aqueous system.
    Type: Grant
    Filed: May 12, 1993
    Date of Patent: April 26, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Subramanian Krishnan, Eugene J. Miller, Mary B. Donovan, Ramona M. Janochoski, Caroline Couvelard
  • Patent number: 5306167
    Abstract: The present invention relates to an IC socket to be used for testing various IC packages, an object of which is to provide the IC socket with means facilitating insertion and removal of IC packages either in testing by employing an automatic loader or in testing with manual operation. It is constructed to have a socket body formed with a plurality of contacts for establishing electric contact with leads of an IC package, a cover 2 for removably fitting the IC package on the socket body, latches 4 having hooks 42 arranged at least at two diagonally opposing corners of said cover 2, and hooking to said socket body 1, and projections extending in the same direction to the hooks 42, releasing blocks 5 arranged in the vicinity of said latches and movable in the vertical direction with respect to said projection 43, and catching portions 11 formed in said socket body 1 and to be hooked the hook 42 of said latch 4.
    Type: Grant
    Filed: June 2, 1993
    Date of Patent: April 26, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Takayuki Nagumo
  • Patent number: 5305560
    Abstract: Splices of endless abrasive belts and cones can be formed without emission of organic volatiles by employing as the splicing adhesive an aqueous adhesive dispersion that is a blend of a polyurethane and a polyisocyanate crosslinking agent.
    Type: Grant
    Filed: May 13, 1993
    Date of Patent: April 26, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Glenn E. Roelofs
  • Patent number: 5304164
    Abstract: An apparatus for handling a patient's blood during a medical procedure which is convertible for use after the procedure for at least one further use. The apparatus comprises a reservoir having a port comprising at least one opening. A primary device, alignable with the port for adapting the reservoir for use during the procedure. The apparatus further comprises one or more secondary devices each alignable with the port means for adapting the reservoir for one or more further uses after the procedure. The primary device and the secondary devices are slidably mounted on the apparatus between tracks, with the primary device initially aligned with the port to allow the reservoir to be used during the medical procedure. The tracks allow the primary device to be moved out of alignment with the port and allow at least one of the secondary devices to be moved into alignment with the port so that the reservoir can be used after the medical procedure.
    Type: Grant
    Filed: March 20, 1992
    Date of Patent: April 19, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Erin J. Lindsay
  • Patent number: 5304223
    Abstract: A coated abrasive article comprising a backing bearing on at least one major surface thereof abrasive composites comprising a plurality of abrasive grains dispersed in a binder. The binder serves as a medium for dispersing abrasive grains, and it may also bond the abrasive composites to the backing. The abrasive composites have a predetermined shape, e.g., pyramidal. The dimensions of a given shape can be made substantially uniform. Furthermore, the composites are disposed in a predetermined array. The predetermined array can exhibit some degree of repetitiveness. The repeating pattern of a predetermined array can be in linear form or in the form of a matrix.
    Type: Grant
    Filed: March 8, 1993
    Date of Patent: April 19, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Jon R. Pieper, Richard M. Olson, Michael V. Mucci, Gary L. Holmes, Robert V. Heiti
  • Patent number: 5303823
    Abstract: A parallelepipedal storage container is formed of two sections. Each section is rectangular and is foldable to separate the section into a central base wall and two side walls. The adjacent base and side walls can be oriented ar right angles to each other to form a U-shape. The storage container is formed by mating the two U-shaped sections so that the side edges of the side walls of the U-shape on one section are disposed adjacent the side edges of the side walls of the other U-shape to form edges of the storage container. The two sections are secured together using a tongue and groove connection to mate the sections along respective edges.
    Type: Grant
    Filed: July 17, 1992
    Date of Patent: April 19, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Gerald J. Niles, Davis W. Chamberlin
  • Patent number: 5304331
    Abstract: The present invention relates to an apparatus and method for extruding a Bingham plastic-type material through a die having an auger rotationally mounted therein.
    Type: Grant
    Filed: December 17, 1992
    Date of Patent: April 19, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: William K. Leonard, Donley D. Rowenhorst, Jerald A. Scherger, Donald R. Winberg
  • Patent number: 5303875
    Abstract: The improved leader block uses a substantially rectangular body that is equipped with two tape guide projections which form, in conjunction with the front of the body, a U-shaped channel open at one end and adapted to received the end of the magnetic tape that extends through the opening in the housing of the magnetic tape cartridge. The size and shape of this U-shaped channel substantially corresponds to the dimensions of the magnetic tape in order to precisely align the magnetic tape within the channel and with reference to the leader block body. The section of the front of the leader block body that constitutes the bottom of the U-shaped channel includes a plurality of parallel oriented, spaced apart grooves inscribed therein. These grooves extend from the top tape guide projection to the bottom tape guide projection in order to provide slots to receive corresponding projections that are included on the surface of the cover of the leader block.
    Type: Grant
    Filed: February 10, 1992
    Date of Patent: April 19, 1994
    Assignees: Minnesota Mining and Manufacturing Company, Storage Technology Corporation
    Inventors: David T. Hoge, Michael W. Johnson, John C. Owens, George P. Rambosek
  • Patent number: 5304224
    Abstract: A tear resistant coated abrasive article comprises a backing which comprises a film having at least three layers situated one on the other in a parallel array. The layers occur essentially randomly in the array and are individually selected from a stiff polyester or copolyester and a ductile sebacic acid based copolyester. An abrasive layer is on a surface of the backing.
    Type: Grant
    Filed: October 1, 1992
    Date of Patent: April 19, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Kimberly K. Harmon
  • Patent number: 5302985
    Abstract: An overhead projector (OHP) presentation system uses a liquid crystal display (LCD) panel to project electronically stored graphic images. The OHP preferably includes an integrated computer having a plurality of output ports for connection to various peripheral devices. A novel interface card is also used to provide electrical connections between the computer and the LCD panel, providing the further benefit of aligning the transmissive portion of the panel with the stage of the OHP. The LCD panel may be designed to swing horizontally into the optical path. This may be accomplished by providing a sliding drawer which inserts the panel within the body of the OHP, or by pivotally attaching the panel to the stage of the OHP.
    Type: Grant
    Filed: March 2, 1993
    Date of Patent: April 12, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: James K. Kennedy, Michael Sweaton, Gary L. Tritle
  • Patent number: 5302423
    Abstract: A process for fabricating a pixelized phosphor having a space between the pixels in the range of about 0.5-25 microns, the process comprising the steps of:(a) depositing a phosphor on a support;(b) exposing the deposited phosphor to a source of electromagnetic radiation through a mask thereby ablating the phosphor segmentally, resulting in a series of structures in both said X and Y directions to produce an array of pixelized phosphors separated by slots;(c) filling the resulting slots between the pixelized phosphors with phosphor material of the same or different composition as utilized in step (a) such that each of the pixelized phosphors on the support are separated by a width of from about 0.5-25 microns; and(d) optionally, planarizing the pixelized phosphors.
    Type: Grant
    Filed: July 9, 1993
    Date of Patent: April 12, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Nang T. Tran, Kenneth R. Paulson
  • Patent number: D345962
    Type: Grant
    Filed: November 27, 1992
    Date of Patent: April 12, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Richard B. Clifton, Mark A. Burton
  • Patent number: D346341
    Type: Grant
    Filed: April 29, 1993
    Date of Patent: April 26, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Roger K. Westerberg, John E. Nelson, Roland W. Rubertus, Alan E. Smither
  • Patent number: D346379
    Type: Grant
    Filed: September 6, 1991
    Date of Patent: April 26, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Navnit C. Patel, Charles M. Tischler