Patents by Inventor Dennis L. Krueger
Dennis L. Krueger has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6630238Abstract: A pressure-sensitive adhesive comprising a blend of at least two components, wherein the first component is at least one pressure-sensitive adhesive and the second component is at least one thermoplastic material, wherein the components form a blended composition having more than one domain and, wherein one domain is substantially continuous (generally, the pressure-sensitive adhesive) and the other domain is substantially fibrillous to schistose (generally, the thermoplastic material). The second component can be (a) at least one thermoplastic elastomer, (b) at least one elastomer with a tackifying resin or (c) at least one elastomer.Type: GrantFiled: June 13, 2001Date of Patent: October 7, 2003Assignee: 3M Innovative Properties CompanyInventors: Patrick D. Hyde, Dennis L. Krueger, Felix P. Lau, Eumi Pyun, Robert W. Shipman, Pamela S. Tucker, Roy Wong, David J. Yarusso
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Patent number: 6568392Abstract: Fold-flat personal respiratory protection devices are provided. The devices have a flat central portion having first and second edges, a flat first member joined to the first edge of the central portion through either a fold-line, seam, weld or bond, said fold, bond, weld or seam of the first member being substantially coextensive with said first edge of said central portion, and a flat second member joined to the second edge of the central portion through either a fold-line, seam, weld or bond, the fold, bond, weld or seam of the second member being substantially coextensive with said second edge of said central portion. At least one of the central portion and first and second members are formed from filter media.Type: GrantFiled: December 22, 1998Date of Patent: May 27, 2003Assignee: 3M Innovative Properties CompanyInventors: Graham J. Bostock, John W. Bryant, Desmond T. Curran, Christopher P. Henderson, Dennis L. Krueger, James F. Dyrud
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Patent number: 6536434Abstract: Fold-flat personal respiratory protection devices are provided. The devices have a flat central portion having first and second edges, a flat first member joined to the first edge of the central portion through either a fold-line, seam, weld or bond, said fold, bond, weld or seam of the first member being substantially coextensive with said first edge of said central portion, and a flat second member joined to the second edge of the central portion through either a fold-line, seam, weld or bond, the fold, bond, weld or seam of the second member being substantially coextensive with said second edge of said central portion. At least one of the central portion and first and second members are formed from filter media.Type: GrantFiled: August 14, 2000Date of Patent: March 25, 2003Assignee: 3M Innovative Properties CompanyInventors: Graham J. Bostock, John W. Bryant, Desmond T. Curran, Christopher P. Henderson, Dennis L. Krueger, James F. Dyrud
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Publication number: 20030015201Abstract: Fold-flat personal respiratory protection devices are provided. The devices have a flat central portion having first and second edges, a flat first member joined to the first edge of the central portion through either a fold-line, seam, weld or bond, said fold, bond, weld or seam of the first member being substantially coextensive with said first edge of said central portion, and a flat second member joined to the second edge of the central portion through either a fold-line, seam, weld or bond, the fold, bond, weld or seam of the second member being substantially coextensive with said second edge of said central portion. At least one of the central portion and first and second members are formed from filter media.Type: ApplicationFiled: September 19, 2002Publication date: January 23, 2003Inventors: Graham J. Bostock, John W. Bryant, Desmond T. Curran, Christopher P. Henderson, Dennis L. Krueger, James F. Dyrud
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Publication number: 20020195738Abstract: A die apparatus, a method of using the die apparatus to produce co-extruded polymeric articles, and co-extruded polymeric articles produced using the die apparatus and method are disclosed. The die apparatus includes a hollow vane configured to extrude a material into a chamber within the die, thereby producing a co-extruded web. The co-extruded web has a plurality of distinct, discontinuous phases in the cross-web direction, the phases having a uniform width as shown by a coefficient of variation of less than 8 percent for any three consecutive phases. The phases are substantially continuous down-web and are surrounded by a matrix having two or more layers.Type: ApplicationFiled: June 27, 2002Publication date: December 26, 2002Applicant: 3M Innovative Properties CompanyInventors: Scott G. Norquist, Dennis L. Krueger, Alan J. Sipinen, Thomas P. Hanschen, Ronald P. Leseman
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Publication number: 20020190406Abstract: A process for stretching films is described. The process preferably stretches films in a uniaxial fashion. Preferably, optical films are stretched including multilayer optical films. Other aspects of the invention include a roll of stretched film and an apparatus for stretching films.Type: ApplicationFiled: May 28, 2002Publication date: December 19, 2002Inventors: William Ward Merrill, Jeffery N. Jackson, Andrew T. Ruff, John A. Wheatley, Dennis L. Krueger
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Publication number: 20020180107Abstract: A process for stretching films is described. The process preferably stretches films in a uniaxial fashion. Preferably, optical films are stretched including multilayer optical films. Other aspects of the invention include a roll of stretched film and an apparatus for stretching films.Type: ApplicationFiled: May 28, 2002Publication date: December 5, 2002Inventors: Jeffery N. Jackson, William Ward Merrill, Andrew T. Ruff, Desiree L. Thompson, Dennis L. Krueger
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Patent number: 6484722Abstract: Fold-flat personal respiratory protection devices are provided. The devices have a flat central portion having first and second edges, a flat first member joined to the first edge of the central portion through either a fold-line, seam, weld or bond, said fold, bond, weld or seam of the first member being substantially coextensive with said first edge of said central portion, and a flat second member joined to the second edge of the central portion through either a fold-line, seam, weld or bond, the fold, bond, weld or seam of the second member being substantially coextensive with said second edge of said central portion. At least one of the central portion and first and second members are formed from filter media.Type: GrantFiled: April 12, 2001Date of Patent: November 26, 2002Assignee: 3M Innovative Properties CompanyInventors: Graham J. Bostock, John W. Bryant, Desmond T. Curran, Christopher P. Henderson, Dennis L. Krueger, James F. Dyrud
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Patent number: 6447875Abstract: A die apparatus, a method of using the die apparatus to produce co-extruded polymeric articles, and co-extruded polymeric articles produced using the die apparatus and method are disclosed. The die apparatus includes a hollow vane configured to extrude a material into a chamber within the die, thereby producing a co-extruded web. The co-extruded web has a plurality of distinct, discontinuous phases in the cross-web direction, the phases having a uniform width as shown by a coefficient of variation of less than 8 percent for, any three consecutive phases. The phases are substantially continuous down-web and are surrounded by a matrix having two or more layers.Type: GrantFiled: July 30, 1999Date of Patent: September 10, 2002Assignee: 3M Innovative Properties CompanyInventors: Scott G. Norquist, Dennis L. Krueger, Alan J. Sipinen, Robert H. Menzies, Thomas P. Hanschen, Ronald P. Leseman, Sharon N. Mitchell, James C. Nygard, Victor P. Thalacker, Jan Ockeloen
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Publication number: 20020007014Abstract: A pressure-sensitive adhesive comprising a blend of at least two components, wherein the first component is at least one pressure-sensitive adhesive and the second component is at least one thermoplastic material, wherein the components form a blended composition having more than one domain and, wherein one domain is substantially continuous (generally, the pressure-sensitive adhesive) and the other domain is substantially fibrinous to schistose (generally, the thermoplastic material). The second component can be (a) at least one thermoplastic elastomer, (b) at least one elastomer with a tackifying resin or (c) at least one elastomer.Type: ApplicationFiled: June 13, 2001Publication date: January 17, 2002Applicant: Minnesota Mining and Manufacturing CompanyInventors: Patrick D. Hyde, Dennis L. Krueger, Felix P. Lau, Eumi Pyun, Robert W. Shipman, Pamela S. Tucker, Roy Wong, David J. Yarusso
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Publication number: 20010015205Abstract: Fold-flat personal respiratory protection devices are provided. The devices have a flat central portion having first and second edges, a flat first member joined to the first edge of the central portion through either a fold-line, seam, weld or bond, said fold, bond, weld or seam of the first member being substantially coextensive with said first edge of said central portion, and a flat second member joined to the second edge of the central portion through either a fold-line, seam, weld or bond, the fold, bond, weld or seam of the second member being substantially coextensive with said second edge of said central portion. At least one of the central portion and first and second members are formed from filter media.Type: ApplicationFiled: April 12, 2001Publication date: August 23, 2001Applicant: 3M Innovative Properties CompanyInventors: Graham J. Bostock, John W. Bryant, Desmond T. Curran, Christopher P. Henderson, Dennis L. Krueger, James F. Dyrud
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Patent number: 6123077Abstract: Fold-flat personal respiratory protection devices are provided. The devices have a flat central portion having first and second edges, a flat first member joined to the first edge of the central portion through either a fold-line, seam, weld or bond, said fold, bond, weld or seam of the first member being substantially coextensive with said first edge of said central portion, and a flat second member joined to the second edge of the central portion through either a fold-line, seam, weld or bond, the fold, bond, weld or seam of the second member being substantially coextensive with said second edge of said central portion. At least one of the central portion and first and second members are formed from filter media.Type: GrantFiled: March 8, 1996Date of Patent: September 26, 2000Assignee: 3M Innovative Properties CompanyInventors: Graham J. Bostock, John W. Bryant, Desmond T. Curran, Christopher P. Henderson, Dennis L. Krueger, James F. Dyrud
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Patent number: 6070579Abstract: A composite headband attachable to a face mask and a method for attaching same. The composite headband has at least one discrete elastomeric core and at least one continuous thermoplastic skin layer secured to the elastomeric core. The composite headband has a first modulus in an unactivated state and a second, lower modulus in an activated state. The thermoplastic skin layer forms a microtextured permanently deformed skin layer when the composite headband is in the activated state. In one embodiment, the at least one elastomeric core and the at least one thermoplastic layer are in continuous contact in the activated state. The composite headband is positioned along the headband path and attached to at least one of the left and right headband attachment locations. The headband path is either an axis intersecting the left and right headband attachment locations or a path that generally follows a contour of a surface of the face mask blank.Type: GrantFiled: March 8, 1996Date of Patent: June 6, 2000Assignee: 3M Innovative Properties CompanyInventors: John W. Bryant, Desmond T. Curran, James F. Dyrud, Christopher P. Henderson, Dennis L. Krueger, Harold J. Seppala, Elfed I. Williams
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Patent number: 6057256Abstract: Fibrous webs of bicomponent fibers are made by extruding a layered molten mass through a row of side-by-side orifices into a high-velocity gaseous stream. Bicomponent fibers of small size can be obtained, and the webs offer unique properties.Type: GrantFiled: December 18, 1987Date of Patent: May 2, 2000Assignee: 3M Innovative Properties CompanyInventors: Dennis L. Krueger, James F. Dyrud
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Patent number: 6048806Abstract: An adhesive tape is provided which comprises a woven cloth, a polymer embedded into the cloth so as to cause the warp and weft fibers of the cloth to bond together at their overlapping points but not to completely encase the fibers, and a pressure sensitive adhesive coated onto at least a portion of the polymer, wherein the adhesive tape is hand tearable in the down-web and in the cross-web direction. A method of manufacturing such a tape is also provided.Type: GrantFiled: October 16, 1997Date of Patent: April 11, 2000Assignee: 3M Innovative Properties CompanyInventors: Gerald S. Deeb, Dennis L. Krueger, Robert H. Menzies, Herbert W. Morris, Patrick D. Hyde, Felix P. Lau, Eumi Pyun, Pamela S. Tucker, Roy Wong
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Patent number: 6045895Abstract: The present invention provides unified multilayer films having at least one internal layer that includes a pressure sensitive adhesive material. Preferably, multilayer films of the present invention are no greater than about 250 micrometers (.mu.m) thick. In particularly preferred embodiments of the present invention, multilayer films include layers that include a pressure sensitive adhesive material alternating with layers that include a material that is not a pressure sensitive adhesive. In other preferred embodiments, multilayer films include alternating layers of different pressure sensitive adhesive materials.Type: GrantFiled: December 1, 1997Date of Patent: April 4, 2000Assignee: 3M Innovative Properties CompanyInventors: Patrick D. Hyde, Richard A. Kollaja, Dennis L. Krueger, Douglas A. Devens, Jr., Gregory B. Gadbois
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Patent number: 6042882Abstract: An adhesive tape is provided which comprises a woven cloth, a polymer embedded into the cloth so as to cause the warp and weft fibers of the cloth to bond together at their overlapping points but not to completely encase the fibers, and a pressure sensitive adhesive coated onto at least a portion of the polymer, wherein the adhesive tape is hand tearable in the down-web and in the cross-web direction. A method of manufacturing such a tape is also provided.Type: GrantFiled: October 16, 1997Date of Patent: March 28, 2000Assignee: 3M Innovative Properties CompanyInventors: Gerald S. Deeb, Dennis L. Krueger, Robert H. Menzies, Herbert W. Morris, Patrick D. Hyde, Felix P. Lau, Eumi Pyum, Pamela S. Tucker, Roy Wong
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Patent number: 5993954Abstract: A single or multi-layer microporous material of which at least one layer contains a compatible, melt-processible polymer mixture having a first polymer component with a melting point greater than 140.degree. C. and a second polymer component having a melting point lower than 120.degree. C. is described as well as a method of preparing the material. The first polymer component and the second polymer component are miscible in a compound or compatible liquid when heated above the melting temperature of the first polymer component or above the liquid--liquid phase separation temperature and phase separate from the compound or compatible liquid when cooled. The materials are particularly useful as battery separators.Type: GrantFiled: April 29, 1997Date of Patent: November 30, 1999Assignee: 3M Innovative Properties CompanyInventors: Philip D. Radovanovic, Gari P. Krogseng, Clinton P. Waller, Jr., James S. Mrozinski, Dennis L. Krueger
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Patent number: 5993943Abstract: Oriented microfibers and processes for making them are disclosed, together with blends of such microfibers with other fibers such as crimped staple fibers and non-oriented microfibers.Type: GrantFiled: July 15, 1992Date of Patent: November 30, 1999Assignee: 3M Innovative Properties CompanyInventors: Hassan Bodaghi, Stanley C. Erickson, Scott M. Purrington, Daniel E. Meyer, Dennis L. Krueger
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Patent number: 5985775Abstract: An adhesive tape is provided which comprises a woven cloth, a polymer embedded into the cloth so as to cause the warp and weft fibers of the cloth to bond together at their overlapping points but not to completely encase the fibers, and a pressure sensitive adhesive coated onto at least a portion of the polymer, wherein the adhesive tape is hand tearable in the down-web and in the cross-web direction. A method of manufacturing such a tape is also provided.Type: GrantFiled: October 16, 1997Date of Patent: November 16, 1999Assignee: 3M Innovative Properties CompanyInventors: Gerald S. Deeb, Dennis L. Krueger, Robert H. Menzies, Herbert W. Morris, Patrick D. Hyde, Felix P. Lau, Eumi Pyum, Pamela S. Tucker, Roy Wong