Patents Represented by Attorney, Agent or Law Firm Alan Ball
  • Patent number: 6574114
    Abstract: A compliant interconnect assembly to electrically connect a first electronic device to a second electronic device comprises a contact set including an electrically insulating flexible film having at least one conductive contact suspended therein. The interconnect assembly also includes a compressible interposer as an electrically insulating elastomer sheet matrix for at least one electrically conducting elastic column to provide a localized conductive path through the thickness of the elastomer sheet. The electrically conducting elastic column comprises a central pillar of conductive spheroidal particles having a first average particle size. The central pillar has a first end opposite a second end. At least the first end has a particulate cap bonded to it including particles having a second average particle size that is less than the first average particle size.
    Type: Grant
    Filed: May 2, 2002
    Date of Patent: June 3, 2003
    Assignee: 3M Innovative Properties Company
    Inventors: Steven R. Brindle, Frank E. Bumb, Jr., John S. Burg, Kwang-Ho Chu, Alexander R. Mathews, Ronald K. Revell
  • Patent number: 6559245
    Abstract: A photoimageable, aqueous acid soluble polyimide polymer comprising an anhydride, including a substituted benzophenone nucleus, a diamine reacted with the anhydride to form a photosensitive polymer intermediate, and at least 60 Mole % of solubilizing amine reacted with the photosensitive polymer intermediate to form the photoimageable, aqueous acid soluble polyimide polymer. An emulsion for electrophoretic deposition of a coating of a photoimageable, aqueous acid soluble polyimide polymer comprises a dispersed phase, including the photoimageable aqueous acid soluble polyimide polymer, dissolved in an organic solvent and a dispersion phase including a coalescence promoter and water. The emulsion may be applied, by electrophoretic deposition, to a conductive structure to provide a photoimageable coating on the conductive structure.
    Type: Grant
    Filed: January 3, 2002
    Date of Patent: May 6, 2003
    Assignee: 3M Innovative Properties Company
    Inventors: Guoping Mao, Nanayakkara L. D. Somasiri, Nicholas A. Stacey
  • Patent number: 6549712
    Abstract: A fiber recoating process and a recoated optical fiber formed by the process that comprises the steps of providing an optical fiber having a coating and cutting a first cut boundary spaced from a secondary cut boundary to mark an internal section of the coating that has opposing sides. Removal of the coating from at least one of the opposing sides provides a pared intervening layer and further forms a first transition region opposite a second transition region. Each of the first transition region and the second transition region has a substantially wedge-shaped contour. Solvent treatment of the pared intervening layer weakens the bond between the coating and the optical fiber between the first cut boundary and the second cut boundary before displacing the coating from the optical fiber to provide the stripped optical fiber. The stripped optical fiber includes a section of optical fiber, the first transition region and the second transition region.
    Type: Grant
    Filed: May 10, 2001
    Date of Patent: April 15, 2003
    Assignee: 3M Innovative Properties Company
    Inventors: Shinichi Abe, Akihiko Yazaki, John T. Cowher, William V. Dower, Anthony W. Gatica, Jason D. Kordecki
  • Patent number: 6547920
    Abstract: An apparatus for forming a loop in a filament comprising a first wall having a first guide slot formed therein and a second wall having a second guide slot formed therein coplanar and parallel to the first guide slot. The first wall is opposite the second wall and each of the guide slots has opposing ends. A first gripper holds a filament at a first location. The first gripper is mounted from the first wall to the second wall at an end of each of the first guide slot and the second guide slot. The apparatus also includes a movable gripper to hold the filament at a second location. The movable gripper has a separation from the first gripper and is mounted from the first wall to the second wall adjacent to the other end of each of the first guide slot and the second guide slot for movement towards the first gripper to reduce the separation between them. This produces a loop of filament between the first gripper and the moveable gripper.
    Type: Grant
    Filed: March 13, 2001
    Date of Patent: April 15, 2003
    Assignee: 3M Innovative Properties
    Inventors: Anthony William Gatica, Peter Henry Bruhn
  • Patent number: 6532327
    Abstract: A method for manufacturing an optical fiber refractive index grating. The method comprises the steps of, providing a substantially twist-free length of an optical fiber between a first spool and a second spool before attaching the first spool and the second spool to a support having a first surface opposite a second surface. The support and spools provide a filament organizer including the first spool as a lockable spool and the second spool as a rotary spool. The filament organizer further comprises a tensioner coupled to the rotary spool to apply tension to at least a central portion of the length of an optical fiber disposed between the lockable spool and the rotary spool.
    Type: Grant
    Filed: March 13, 2001
    Date of Patent: March 11, 2003
    Assignee: 3M Innovative Properties Company
    Inventors: Anthony William Gatica, Bryon James Cronk, William Vogel Dower, John Thomas Cowher, Stephen Paul LeBlanc, Dwayne L. LaBrake, Brian Kenneth Nelson, Christopher B. Walker, Jr., Ronald Phillip Pepin, Brian John Gates
  • Patent number: 6528478
    Abstract: To provide a cleaner composition suitable for removing oxidized grease stains adhering to the surface of floor, wall and cooking instruments in the kitchen. A cleaner composition is constructed to have the concentrated form and comprise a water-insoluble organic solvent, amines and a nonionic amine oxide-based surfactant.
    Type: Grant
    Filed: December 18, 2001
    Date of Patent: March 4, 2003
    Inventor: Takatushi Totoki
  • Patent number: 6524115
    Abstract: A contact set and compressible interposer, methods for producing them and a compliant interconnect assembly for providing electrical connection of a first electronic device to a second electronic device. The compliant interconnect assembly comprises a contact set and a compressible interposer. The contact set includes an electrically insulating, flexible film with at least one conductive contact suspended therein to provide an electrically conductive path through the film. Formation of at least one de-coupling hole in the flexible film, close to a conductive contact, further contributes to independent movement of the conductive contact. A compressible interposer in the form of an electrically insulating elastomer matrix, surrounding electrically isolated conducting elastic columns, provides a localized conductive path through the thickness of the elastomer sheet.
    Type: Grant
    Filed: August 10, 2000
    Date of Patent: February 25, 2003
    Assignee: 3M Innovative Properties Company
    Inventors: Geoffrey William Gates, Frank E. Bumb, Jr.
  • Patent number: 6510272
    Abstract: An assembly and method for a fiber grating package comprising a rod having a first end and a second end and a coefficient of thermal expansion. A first end cap includes a first base having a first opening formed therein to receive the rod for movement of the first end cap along the rod to a first position adjacent to the first end of the rod. The first end cap further includes a first cantilever member extending from the first base and the first cantilever member has a first contact point thereon. A second end cap includes a second base having a second opening formed therein to receive said rod for movement of said second end cap along said rod to a second position adjacent to the second end of the rod. The second end cap further includes a second cantilever member extending from the second base and the second cantilever member has a second contact point thereon.
    Type: Grant
    Filed: August 28, 2000
    Date of Patent: January 21, 2003
    Assignee: 3M Innovative Properties Company
    Inventor: Gordon Wiegand
  • Patent number: 6503327
    Abstract: A filament coating apparatus comprising a frame including a first filament holding fixture and a second holding fixture for releasably securing a filament adjacent to an extrusion coating fixture also attached to said frame. The extrusion coating fixture comprises a guide rod, a carriage movably mounted on the guide rod, and a coating head including an opening for directing a curable coating composition to a filament positioned in a channel formed in the coating head. A radiation source is aligned to the coating head for radiation curing of the curable coating composition applied to the filament. Both the coating head and the radiation source are joined to the carriage to move relative to a portion of a filament during application of curable coating composition to its surface.
    Type: Grant
    Filed: March 13, 2001
    Date of Patent: January 7, 2003
    Assignee: 3M Innovative Properties Company
    Inventor: Brian Kenneth Nelson
  • Patent number: 6491745
    Abstract: The object is to provide a water/oil repellent composition which can simultaneously perform a water/oil treatment and a polishing treatment to leather products such as leather shoes, etc., by using one water/oil repellent composition, and can also exert excellent water/oil repellent effect and excellent polishing effect. It is constituted so that microcapsules, in which a polishing agent is encapsulated, are dispersed in a water/oil repellent agent.
    Type: Grant
    Filed: November 9, 2000
    Date of Patent: December 10, 2002
    Assignee: 3M Innovative Properties Company
    Inventor: Masahiro Ashizawa
  • Patent number: 6487939
    Abstract: A mechanical stripping apparatus for displacing resin from a resin covered filament by forming a removable sleeve portion between opposing filament ends. The mechanical stripping apparatus comprises a first clamp for holding a filament at a first location and a second clamp having a separation from the first clamp and in axial alignment therewith for holding a filament at a second location. A first set of cutting blades adjacent to the first clamp is positioned for cutting into resin around a resin covered filament proximate to the first location. The mechanical stripping apparatus also includes a second set of cutting blades adjacent to the second clamp for cutting into resin around a resin covered filament proximate to the second location, such that a distance separates the first set of cutting blades from the second set of cutting blades. The distance between sets of cutting blades is less than the separation between the clamps.
    Type: Grant
    Filed: March 13, 2001
    Date of Patent: December 3, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: John Thomas Cowher, William Vogel Dower
  • Patent number: 6485595
    Abstract: An EMI shielding enclosure, for an electronic assembly, comprising a ground plane of a printed circuit connected to a shaped EMI shielding cover. The cover results from thermoforming a composite sheet of several layers, including a carrier for a fibrous metal mat that has fibers substantially surrounded by a fiber-coat. Connection of the cover to the ground plane, to form the EMI shielding enclosure, requires the fiber-coat to adhere to the printed circuit in the vicinity of the ground plane.
    Type: Grant
    Filed: July 6, 2000
    Date of Patent: November 26, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Donald M. Yenni, Jr., Jose P. de Souza, Mark G. Baker
  • Patent number: 6472065
    Abstract: A radiation detackifiable adhesive composition comprising a (meth)acrylate copolymer including from about 85 wt. % to about 97.5 wt. % of a (meth)acrylate ester and from about 2.5 wt. % to about 15 wt. % of a copolymerizable carboxylate monomer and a multi-functional urethane acrylate oligomer combined with the (meth)acrylate copolymer to provide from about 25 parts to about 40 parts of the oligomer per 100 parts of the copolymer. The adhesive composition becomes progressively detackified during exposure to ultraviolet radiation. The present invention further provides a clear adhesive coated sheet for supporting a silicon wafer during manufacture of semiconductor microchips. The coated sheet comprises a transparent film substrate coated with a radiation detackifiable adhesive composition.
    Type: Grant
    Filed: July 13, 2000
    Date of Patent: October 29, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Karunasena A. Alahapperuma, Steven S. Kantner
  • Patent number: 6434314
    Abstract: A filament holding fixture having a closed position for applying substantially equal pressure to a plurality of points around the circumference of a filament. The holding fixture comprises a first jaw having a planar surface and an open-ended channel formed in the first jaw opening to the planar surface, and a second jaw having a structured surface including an open-ended groove of substantially rectangular cross section. Both the channel and the groove are sized for even application of pressure to a filament placed between them when there is axial alignment of the channel with the groove. An angular compensator may be included to facilitate positioning of the groove for even application of pressure to a filament when the planar surface lies adjacent to the structured surface, and the filament holding fixture is in the closed position.
    Type: Grant
    Filed: March 13, 2001
    Date of Patent: August 13, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Anthony William Gatica, Stephen Paul LeBlanc, Ronald Phillip Pepin
  • Patent number: 6410636
    Abstract: A water dispersed primer composition comprising a solution of a halogenated hydrocarbon polymer in organic solvent; and a dispersing agent added to the solution to form a fluid primer to be dispersed in water to provide the water dispersed primer composition. The invention further includes a water based priming adhesive composition comprising an adhesive dispersion of a an adhesive polymer dispersed in water, and a primer mixed with the adhesive dispersion to form the priming adhesive. The primer comprises a solution of a halogenated hydrocarbon polymer in organic solvent and optionally a dispersing agent.
    Type: Grant
    Filed: August 9, 2001
    Date of Patent: June 25, 2002
    Assignee: 3M Innovative Properties Company
    Inventor: James David Groves
  • Patent number: 6403673
    Abstract: A water dispersed primer composition comprising a solution of a halogenated hydrocarbon polymer in organic solvent; and a dispersing agent added to the solution to form a fluid primer to be dispersed in water to provide the water dispersed primer composition. Optionally, fluid primers may include photoreactive components to provide photoreactive water dispersed primer compositions. The invention further includes water based priming adhesive compositions comprising an adhesive dispersion of an adhesive polymer dispersed in water, and a primer mixed with the adhesive dispersion to form the priming adhesive.
    Type: Grant
    Filed: January 18, 2001
    Date of Patent: June 11, 2002
    Assignee: 3M Innovative Properties Company
    Inventor: James D. Groves
  • Patent number: 6403211
    Abstract: A flexible circuit comprising a liquid crystal polymer film having through-holes and related shaped voids formed therein using an etchant composition comprising a solution in water of from about 35 wt. % to about 55 wt. % of an alkali metal salt; and from about 10 wt. % to about 35 wt. % of a solubilizer dissolved in the solution to provide the etchant composition suitable for etching the liquid crystal polymer at a temperature from about 50° C. to about 120° C.
    Type: Grant
    Filed: July 18, 2000
    Date of Patent: June 11, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Rui Yang, Guoping Mao
  • Patent number: 6391954
    Abstract: The invention provides a recording sheet including an additive, referred to herein as a compatibilizer, to improve the quality of images formed by toner powder development of electrostatic charge patterns. Recording sheets, carrying images produced by toner powder transfer and fusion on a receptor surface, according to the present invention, exhibit improved light transmission and reduced light scattering. Specifically, a transparent sheet is provided having a toner-receptive coating containing about 4 wt. % to about 25 wt. % of a compatibilizer on at least one surface, wherein the coating has a low density yellow Q factor value at least 2 less than an identical coating without the compatibilizer.
    Type: Grant
    Filed: June 14, 2001
    Date of Patent: May 21, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Jamshid Azizi, Joseph C. Carls, Shigeaki Dohgoshi, Koji Kamiyama, Andrew C. Lottes
  • Patent number: 6387508
    Abstract: An electrically insulating composition for bonding to metal and method for applying the composition in sheet form. The insulating composition comprises a polyolefin polymer adapted for elevated temperature crosslinking and a co-bonding agent mixed with the polyolefin polymer in an amount up to about 60 parts of tile co-bonding agent to 100 parts of the polyolefin polymer. Preferably, the insulating composition cures in contact with metal pre-heated to elevated temperatures in a range from about 140° C. to about 190° C. to provide a lap-shear bond strength between the electrically insulating composition and a metal substrate of from about 3.3 MPa to about 12 MPa.
    Type: Grant
    Filed: September 14, 2000
    Date of Patent: May 14, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: C. Carol Guilbert, David V. Mahoney, Rafael Garcia-Ramirez
  • Patent number: 6379865
    Abstract: A photoimageable, aqueous acid soluble polyimide polymer comprising an anhydride, including a substituted benzophenone nucleus, a diamine reacted with the anhydride to form a photosensitive polymer intermediate, and at least 60 Mole % of solubilizing amine reacted with the photosensitive polymer intermediate to form the photoimageable, aqueous acid soluble polyimide polymer. An emulsion for electrophoretic deposition of a coating of a photoimageable, aqueous acid soluble polyimide polymer comprises a dispersed phase, including the photoimageable aqueous acid soluble polyimide polymer, dissolved in an organic solvent and a dispersion phase including a coalescence promoter and water. The emulsion may be applied, by electrophoretic deposition, to a conductive structure to provide a photoimageable coating on the conductive structure.
    Type: Grant
    Filed: April 11, 2000
    Date of Patent: April 30, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Guoping Mao, Hany B. Eitouni, Alphonsus V. Pocius, John B. Scheibner, Nanayakkara L. D. Somasiri, Nicholas A. Stacey, Alfred Viehbeck