Patents by Inventor Denise A. Barrera
Denise A. Barrera 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: 10451780Abstract: Provided is a retroreflective article comprising a fibrous material and a perforated retroreflective material attached to said fibrous material. Embodiments of the article achieve desirable values under the ASTM F2731-11 Transmitted and Stored Energy Test, the E96/E96M-12 Moisture Vapor Transmission Rate Test, and ASTM E810-03 (2013) Standard Test Method for Coefficient of Retroreflection of Retroreflective Sheeting Utilizing the Coplanar Geometry.Type: GrantFiled: December 12, 2013Date of Patent: October 22, 2019Assignee: 3M Innovative Properties CompanyInventors: David B. Running, Shri Niwas, Matthew R. Lehmann, Douglas J. Hall, Kenneth L. Hanzalik, Denise A. Barrera, Alyson C. Phillips, Loretta L. Lucas
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Publication number: 20150168614Abstract: Provided is a retroreflective article comprising a fibrous material and a perforated retroreflective material attached to said fibrous material. Embodiments of the article achieve desirable values under the ASTM F2731-11 Transmitted and Stored Energy Test, the E96/E96M-12 Moisture Vapor Transmission Rate Test, and ASTM E810-03 (2013) Standard Test Method for Coefficient of Retroreflection of Retroreflective Sheeting Utilizing the Coplanar Geometry.Type: ApplicationFiled: December 12, 2013Publication date: June 18, 2015Applicant: 3M INNOVATIVE PROPERTIES COMPANYInventors: David B. Running, Shri Niwas, Matthew R. Lehmann, Douglas J. Hall, Kenneth L. Hanzalik, Denise A. Barrera, Alyson C. Phillips, Loretta L. Lucas
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Publication number: 20120125341Abstract: An filtering face-piece respirator that includes a mask body 12 and a harness 14. The mask body includes a support structure 16, filtering structure 18, and a face seal element 40. The face seal element 40 is overmolded onto at least a portion of a perimeter of the support structure of the mask body. The overmolding of the face seal member to the support structure allows the face seal to become firmly secured to the mask body at its perimeter.Type: ApplicationFiled: November 19, 2010Publication date: May 24, 2012Inventors: Yonas Gebrewold, Michael K. Domroese, Dean R. Duffy, Dwayne D. Daugaard, Nhat Ha T. Nguyen, David M. Blomberg, Denise A. Barrera
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Publication number: 20120125342Abstract: A filtering face-piece respirator 10 that comprises a mask body 12 and a harness 14. The mask body 12 includes a supporting frame structure 16 and a filtering structure 18. The frame structure is injection molded onto the filtering structure 18 such that the frame structure 16 becomes bonded to the filtering structure 18. A mask body having such a support structure allows the filtering structure to follow its configuration closely, providing improved aesthetics and collapse resistance to the resulting article.Type: ApplicationFiled: November 19, 2010Publication date: May 24, 2012Inventors: Yonas Gebrewold, Michael K. Domroese, Dean R. Duffy, Dwayne D. Daugaard, Nhat Ha T. Nguyen, David M. Blomberg, Denise A. Barrera
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Patent number: 6623824Abstract: A novel release liner is provided which has a release surface comprising a syndiotactic polymer. The release liners of the present invention offer superior release to a wide variety of materials without the application of release agents, have relatively high heat distortion temperatures, and are unaffected by radiation sources used to cure most polymeric compositions. The release liners of the present invention can be microreplicated with a pattern which can be transferred to coatings and other impressionable materials to impart unique physical or optical properties. Thus, a method of producing a patterned article is also provided, as is a method of producing a solid object from a curable composition.Type: GrantFiled: January 29, 1999Date of Patent: September 23, 2003Assignee: 3M Innovative Properties CompanyInventors: William D. Joseph, Lee A. Pavelka, Jaime R. Ojeda, Denise A. Barrera, Roberta E. Harelstad, Bruce A. Sventek
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Patent number: 6498218Abstract: An interpenetrating polymer network (IPN) or semi-interpenetrating polymer network (semi-IPN) comprises a first phase which is continuous and comprises a flexible polymer and a second phase which is a fluorescent or nonfluorescent durable dispersed or continuous phase and comprises a dye and a polymer, wherein the polymer enhances durability of the dye. Such networks are particularly useful in fluorescent traffic signs or safety devices or in pavement marking tape or paint.Type: GrantFiled: March 11, 2002Date of Patent: December 24, 2002Inventors: Denise A. Barrera, Roberta E. Harelstad, William D. Joseph, Lee A. Pavelka
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Publication number: 20020132900Abstract: An interpenetrating polymer network (IPN) or semi-interpenetrating polymer network (semi-IPN) comprises a first phase which is continuous and comprises a flexible polymer and a second phase which is a fluorescent or nonfluorescent durable dispersed or continuous phase and comprises a dye and a polymer, wherein the polymer enhances durability of the dye. Such networks are particularly useful in fluorescent traffic signs or safety devices or in pavement marking tape or paint.Type: ApplicationFiled: March 11, 2002Publication date: September 19, 2002Applicant: 3M Innovative Properties CompanyInventors: Denise A. Barrera, Roberta E. Harelstad, William D. Joseph, Lee A. Pavelka
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Patent number: 6395844Abstract: An interpenetrating polymer network (IPN) or semi-interpenetrating polymer network (semi-IPN) comprises a first phase which is continuous and comprises a flexible polymer and a second phase which is a fluorescent or nonfluorescent durable dispersed or continuous phase and comprises a dye and a polymer, wherein the polymer enhances durability of the dye. Such networks are particularly useful in fluorescent traffic signs or safety devices or in pavement marking tape or paint.Type: GrantFiled: September 1, 1999Date of Patent: May 28, 2002Assignee: 3M Innovative Properties CompanyInventors: Denise A. Barrera, Roberta E. Harelstad, William D. Joseph, Lee A. Pavelka
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Patent number: 6326072Abstract: A novel release liner is provided which has a release surface comprising a syndiotactic polymer. The release liners of the present invention offer superior release to a wide variety of materials without the application of release agents, have relatively high heat distortion temperatures, and are unaffected by radiation sources used to cure most polymeric compositions. The release liners of the present invention can be microreplicated with a pattern which can be transferred to coatings and other impressionable materials to impart unique physical or optical properties. Thus, a method of producing a patterned article is also provided, as is a method of producing a solid object from a curable composition.Type: GrantFiled: January 29, 1999Date of Patent: December 4, 2001Assignee: 3M Innovative Properties CompanyInventors: Jaime R. Ojeda, Lee A. Pavelka, William D. Joseph, Bruce A. Sventek, Roberta E. Harelstad, Denise A. Barrera
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Patent number: 6001936Abstract: An interpenetrating polymer network (IPN) or semi-interpenetrating polymer network (semi-IPN) comprises a first phase which is continuous and comprises a flexible polymer and a second phase which is a fluorescent or nonfluorescent durable dispersed or continuous phase and comprises a dye and a polymer, wherein the polymer enhances durability of the dye. Such networks are particularly useful in fluorescent traffic signs or safety devices or in pavement marking tape or paint.Type: GrantFiled: October 24, 1997Date of Patent: December 14, 1999Assignee: 3M Innovative Properties CompanyInventors: Denise A. Barrera, Roberta E. Harelstad, William D. Joseph, Lee A. Pavelka
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Patent number: 5965256Abstract: A multi-layered film disposed on a substrate, the multi-layered film comprising:(a) an interpenetrating polymer network (IPN) layer; and(b) at least one fluoro-containing polymer layer;wherein the fluoro-containing polymer layer comprises a perfluoro-acrylate homo-or copolymer, or a perfluoro-vinyl non-acrylate homo-or copolymer. The substrate can be a cured adhesive, preferably a cured pressure-sensitive adhesive (PSA), in which case the fluoro-containing polymer layer is typically situated between the PSA layer and the IPN layer. Alternatively, the substrate can be a surface to be protected from exposure to weather, chemical exposure, graffiti, or the like, such as, for example, a vehicle such as an automobile, a truck, a boat, or an aircraft; an outdoor sign; or a building exterior.Type: GrantFiled: October 14, 1997Date of Patent: October 12, 1999Assignee: Minnesota Mining and Manufacturing CompanyInventor: Denise A. Barrera
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Patent number: 5399665Abstract: Polymers more suitable for use in organ transplantation are formed by coupling biologically active moieties to the free amino groups of polymers formed by incorporation of .alpha. amino acids into polymers formed of alpha hydroxy acids such as lactic acids. In the preferred embodiment, the peptides are coupled to the free amino groups.Type: GrantFiled: November 5, 1992Date of Patent: March 21, 1995Assignees: Massachusetts Institute of Technology, Children's HospitalInventors: Denise Barrera, Robert S. Langer, Peter T. Lansbury, Jr., Joseph P. Vacanti