Patents by Inventor Michael R. Berrigan

Michael R. Berrigan 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).

  • Publication number: 20240003077
    Abstract: A fibrous web comprising multiple fibers, wherein the fibrous web has a major web surface; wherein the fibers near the major web surface comprise an outer surface; wherein the outer surface of the fibers compromises a recrystallized skin layer; wherein the recrystallized skin layer has a plurality of textures; and wherein at least another part of the outer surface is smooth.
    Type: Application
    Filed: September 9, 2021
    Publication date: January 4, 2024
    Inventors: Michelle M. Mok, Michael R. Berrigan, Aniruddha A. Upadhye, Andrew W. Vail
  • Patent number: 11839845
    Abstract: A relofted, spunbonded nonwoven web exhibiting a solidity of from less than 8.0%, to at least 3.0%, and exhibiting a Quality Factor of at least 0.30. Methods of making a relofted web; and, methods of using a relofted web as an air-filtration web, e.g. as a filter media or a layer thereof.
    Type: Grant
    Filed: July 19, 2019
    Date of Patent: December 12, 2023
    Assignee: 3M Innovative Properties Company
    Inventors: Zhiqun Zhang, Edward Keith Willis, Jacob J. Thelen, Daniel E. Johnson, Bryan L. Gerhardt, Michael R. Berrigan
  • Publication number: 20230395056
    Abstract: Provided herein are acoustic articles (100) that include a porous layer (102) and heterogeneous filler (104) received in the porous layer. The heterogeneous filler is substantially non-porous and present in an amount of from 0.25% to 7% by volume relative to the total volume of the porous layer and has a specific surface area of from 0.01 m2/g to 1 m2/g. The acoustic article has a flow resistance of from 500 MKS Rayls to 12,000 MKS Rayls.
    Type: Application
    Filed: October 18, 2021
    Publication date: December 7, 2023
    Inventors: Nicole D. Petkovich, Michelle M. K. Mok, Michael R. Berrigan, Jonathan H. Alexander, Samantha D. Smith, Yongbeom Seo, Daniel E. Johnson
  • Publication number: 20230326443
    Abstract: An acoustic absorbing filler, the acoustic absorbing filler comprising agglomerates comprising a first phase comprising a plurality of porous particulates and a second phase comprising a binder; wherein the acoustic absorbing filler has a median sieved particle size of from 100 micrometer to 700 micrometers and a specific surface area of from 50 m2/g to 900 m2/g; wherein the acoustic absorbing filler has a normal incidence acoustic absorption of no less than 0.20 alpha at 400 Hz.
    Type: Application
    Filed: September 9, 2021
    Publication date: October 12, 2023
    Inventors: Michelle M. Mok, Nicole D. Petkovich, Michael R. Berrigan, Yongbeom Seo, Andrew J. Hatch, Kevin A. Frankel, Seungkyu Lee
  • Publication number: 20230290326
    Abstract: An acoustic absorbing filler, the acoustic absorbing filler comprising a core particle comprising a polymer; an outer layer coated on the core particle, wherein the outer layer comprise microporous particulates; and wherein the acoustic absorbing filler has a median particle size of from 100 micrometer to 700 micrometers and a specific surface area of from 10 m2/g to 400 m2/g; wherein the acoustic absorbing filler has a normal incidence acoustic absorption of no less than 0.15 at 300 Hz when measured in a 20 mm packed bed.
    Type: Application
    Filed: September 9, 2021
    Publication date: September 14, 2023
    Inventors: Michelle M. Mok, Nicole D. Petkovich, Michael R. Berrigan
  • Publication number: 20230270589
    Abstract: A clinical garment for patient warming including a front body panel having a first edge, an opposite second edge, an insulated sheet comprising an insulated layer positioned between an outer layer a film layer, a permeable layer adjacent to the film layer of the insulated sheet, a blanket section defined by a lower portion of the insulated sheet sealed to a lower portion of the permeable along a top edge, a bottom edge, and opposite first and second side edges of the blanket section, and at least one inlet port extending into the blanket section. The garment further includes a first back panel secured to at least a portion of the first edge of the front body panel and a second back panel secured to at least a portion of the second edge of the front body panel.
    Type: Application
    Filed: July 21, 2021
    Publication date: August 31, 2023
    Inventors: Andrew J. McGregor, James A. Thielen, Michael R. Berrigan, Daniel P. Doran, Jenna L. Lindsay, Amanda M. Rue, Benjamin C. Stanaway, John R. Stark
  • Publication number: 20230233968
    Abstract: A pleated multilayer air filter assembly including a primary filtration layer and a prefilter layer that are bonded to each other and are co-pleated with each other. The primary filtration layer includes meltblown electret fibers. The prefilter layer includes meltspun, spunbonded electret fibers that comprise a radially outer surface comprising polymethylpentene. The ratio of Effective Fiber Diameter of the fibers of the primary filtration layer to Effective Fiber Diameter of the fibers of the primary filtration layer is at least 1.5.
    Type: Application
    Filed: June 30, 2021
    Publication date: July 27, 2023
    Inventors: HIMANSHU JASUJA, Nathan E. Schultz, Seth M. Kirk, Bryan L. Gerhardt, Daniel C. Duan, Michael R. Berrigan
  • Publication number: 20220372666
    Abstract: A thermoplastic core-sheath fiber comprises: a polymer fiber core having a coextensive sheath layer disposed thereon, and an electrostatic charge enhancing additive. The sheath layer may comprise poly(4-methyl-1-pentene) and the fiber core and the sheath layer have different compositions. At least one of the fiber core or the sheath layer comprises an electret charge. A nonwoven fibrous web comprising the core-sheath fibers and a respirator including the nonwoven fibrous web are also disclosed.
    Type: Application
    Filed: June 24, 2020
    Publication date: November 24, 2022
    Inventors: Nathan E. Schultz, Daniel C. Duan, Seth M. Kirk, Michael R. Berrigan, Zackary J. Becker, Fuming B. Li, John M. Sebastian
  • Publication number: 20220323890
    Abstract: A filter assembly comprises an air filter medium and a prefilter medium. The prefilter medium comprises a second nonwoven fibrous web comprising poly(4-methylpentene) and an electrostatic charging additive and has a second electret charge. The filter assembly is configured such that air passing through the prefilter is directed through the air filter medium. A respirator includes the filter assembly. A prefilter assembly comprises a third nonwoven fibrous web retained by a prefilter frame. The third nonwoven fibrous web comprises: core-sheath fiber comprising a fiber core having a poly(4-methylpentene) sheath layer disposed thereon; and an electrostatic charging additive, wherein the electrostatic charging additive is contained in at least one of the fiber core or the sheath layer. The third nonwoven fibrous web has a third electret charge.
    Type: Application
    Filed: June 12, 2020
    Publication date: October 13, 2022
    Inventors: Nathan E. Schultz, Daniel C. Duan, Seth M. Kirk, Michael R. Berrigan, Zackary J. Becker, Fuming B. Li, John M. Sebastian
  • Publication number: 20220314576
    Abstract: A composite fabric includes a nonwoven fabric layer having non-bonded areas and a structured film layer discontinuously bonded to the nonwoven fabric layer. The discontinuously bonded nonwoven fabric layer and the structured film layer share an overlapping area with at least one set of coincident bond sites. The discontinuously bonded nonwoven fabric does not have another bonding pattern in the overlapping area distinct from the at least one set of coincident bond sites. A method of forming a composite fabric is also described. The method includes forming a fiber layer including a mat of at least partially unconsolidated fibers, positioning a structured film layer and the fiber layer such that they overlap, and discontinuously bonding the mat into a discontinuously bonded nonwoven fabric while simultaneously bonding the structured film layer to the nonwoven fabric layer. An apparatus for forming a composite fabric is also described.
    Type: Application
    Filed: June 14, 2022
    Publication date: October 6, 2022
    Inventors: Thomas J. Gilbert, Shou-Lu G. Wang, Neelakandan Chandrasekaran, Todd L. Nelson, Stanley Rendon, Mark A. Peltier, Michael R. Berrigan, Jerald W. Hall, JR., Stephen M. Sanocki, Daniel E. Johnson, Bernard G. Rolstad, Ibrahim S. Gunes, Jayant Chakravarty
  • Publication number: 20220266180
    Abstract: A single-layer spunbonded air-filtration web including meltspun autogenously bonded electret fibers with an Actual Fiber Diameter of from 3.0 microns to 15 microns. The air-filtration web exhibits a ratio of mean flow pore size to pore size range of from 0.55 to 2.5. Also disclosed are methods of making such webs, and methods of using such webs to perform air filtration.
    Type: Application
    Filed: August 12, 2020
    Publication date: August 25, 2022
    Inventors: John D. Stelter, Zachary J. Becker, Michael R. Berrigan, Alexander P. Flage, Andrew R. Fox, Bryan L. Gerhardt, Himanshu Jasuja, William J. Kopecky, Patrick J. Sager, Samatha D Smith, Jacob J. Thelen, Kent B. Willgohs
  • Publication number: 20220266181
    Abstract: A single-layer spunbonded air-filtration web including meltspun autogenously bonded electret fibers with an Actual Fiber Diameter of from 3.0 microns to 9.0 microns. The air-filtration web exhibits a mean flow pore size of from 8.0 to 19 microns and exhibits a ratio of mean flow pore size to pore size range of from 0.55 to 2.5. Also disclosed are methods of making such webs, and methods of using such webs to perform air filtration.
    Type: Application
    Filed: August 12, 2020
    Publication date: August 25, 2022
    Inventors: Himanshu Jasuja, Kent B. Willgohs, Jacob J. Thelen, John D. Stelter, Samatha D. Smith, Patrick J. Sager, William J. Kopecky, Bryan L Gerhardt, Andrew R. Fox, Alexander P. Flage, Michael R. Berrigan, Zachary J. Becker
  • Publication number: 20220178061
    Abstract: A non woven web including a multiplicity of non-respirable, polycrystalline, aluminosilicate ceramic filaments entangled to form a cohesive mat, the polycrystalline, aluminosilicate ceramic filaments having an average mullite percent of at least 75 wt %. The cohesive mat preferably exhibits a compression resilience after 1,000 cycles at 900° C. when measured according to the Fatigue Test, of at least 30 kPa. Insulation articles including the cohesive mats or formed by chopping the ceramic mats into ceramic fibers, pollution control devices including the insulation articles, and methods of making the non-respirable, polycrystalline, aluminosilicate ceramic filaments and fibers, nonwoven webs, insulation articles, and pollution control devices, are also described.
    Type: Application
    Filed: February 22, 2022
    Publication date: June 9, 2022
    Inventors: Anne N. de Rovere, Kari A. McGee, Daimon K. Heller, William V. Chiu, Petrus J. Bekker, Michael R. Berrigan
  • Publication number: 20220165242
    Abstract: Provided are acoustic articles, and related methods, that include a porous layer and heterogeneous filler received in the porous layer. The heterogeneous filler can include clay, diatomaceous earth, graphite, glass bubbles, polymeric filler, non-layered silicate, plant-based filler, or a combination thereof, and can have a median particle size of from 1 micrometer to 1000 micrometers and a specific surface area of from 0.1 m2/g to 800 m2/g. The acoustic article can have an overall flow resistance of from 100 MKS Rayls to 8000 MKS Rayls. The acoustic articles can serve as acoustic absorbers, vibration dampers, and/or acoustic and thermal insulators.
    Type: Application
    Filed: April 13, 2020
    Publication date: May 26, 2022
    Inventors: Michelle M. MOK, Michael R. BERRIGAN, Nicole D. PETKOVICH, Jonathan H. ALEXANDER, Michael S. WENDLAND, Seungkyu LEE, Hassan SAHOUANI
  • Publication number: 20220096977
    Abstract: The present disclosure relates to multi-layer composite articles including at least two nonwoven web layers. Each or the layers may be a spunbonded web, and each may include biodegradable materials. The multi-layered composites of the present disclosure are particularly well suited for air filtration, as they can combine a high dust holding capacity with sufficient strength, dimensional stability, and a relatively low pressure drop.
    Type: Application
    Filed: January 17, 2020
    Publication date: March 31, 2022
    Inventors: Zhiqun Zhang, Michael R. Berrigan, Ignatius A. Kadoma, Bryan L. Gerhardt, Liming Song, John D. Stelter, Zackary J. Becker
  • Publication number: 20210375251
    Abstract: Provided are acoustic articles having a porous layer (102,104,106) placed in contact with a heterogeneous filler comprising porous carbon and having an average surface area of from 0.1 m2/g to 10,000 m2/g. The acoustic articles can have a flow resistance of from 10 MKS Rayls to 5000 MKS Rayls. Optionally, the porous layer includes a non-woven fibrous layer or a perforated film having a plurality of apertures with an average narrowest diameter of from 30 micrometers to 5000 micrometers. The heterogeneous filler can enhance low frequency performance without significantly compromising high frequency performance, thickness or weight.
    Type: Application
    Filed: October 19, 2018
    Publication date: December 2, 2021
    Inventors: Seungkyu LEE, Megan A. CREIGHTON, Jonathan H. ALEXANDER, Michael R. BERRIGAN, Thomas P. HANSCHEN
  • Publication number: 20210229012
    Abstract: A relofted, spunbonded nonwoven web exhibiting a solidity of from less than 8.0%, to at least 3.0%, and exhibiting a Quality Factor of at least 0.30. Methods of making a relofted web; and, methods of using a relofted web as an air-filtration web, e.g. as a filter media or a layer thereof.
    Type: Application
    Filed: July 19, 2019
    Publication date: July 29, 2021
    Inventors: Zhiqun Zhang, Edward Keith Willis, Jacob J. Thelen, Daniel E. Johnson, Bryan L. Gerhardt, Michael R. Berrigan
  • Publication number: 20210123173
    Abstract: A nonwoven article comprising a two-dimensional nonwoven structure or a three-dimensional nonwoven structure comprising a plurality of discontinuous polycrystalline, aluminosilicate ceramic fibers that are cohesively bonded together by a fired precursor inorganic binder, wherein each cohesively bonded discontinuous fiber is bonded to one or a plurality of other said discontinuous fibers at one or more locations along its length.
    Type: Application
    Filed: May 10, 2019
    Publication date: April 29, 2021
    Inventors: Anne N. De Rovere, Michael R. Berrigan, William V. Chiu, Daimon K Heller, Kari A. McGee, David M. Wilson
  • Publication number: 20200299877
    Abstract: The provided articles, assemblies, and methods use a non-woven fibrous web (50) having one or more layers (60) that are densified in situ to provide a layer that is densified relative to one or more adjacent layers, collectively within a unitary non-woven construction. The non-woven web (50) can be made from fibers having a composition and/or structure that resist shrinkage induced by polymer crystallization when subjected to high temperatures. Advantageously, the provided non-woven webs (50) can be molded to form a three-dimensional shaped article that displays dimensional stability.
    Type: Application
    Filed: September 15, 2017
    Publication date: September 24, 2020
    Inventors: Jinzhang YOU, Jonathan H. ALEXANDER, Michael R. BERRIGAN, Akira ITO, Xiaojun SU, Qinrong WU, Liyun REN, Thomas P. HANSCHEN, Daniel J. ZILLIG, Sachin TALWAR
  • Publication number: 20200208314
    Abstract: Nonwoven webs including one or more semi-continuous filaments made of a mixture including from about 50% w/w to about 99% w/w of at least one crystalline polyolefin (co)polymer, and from about 1% w/w to about 40% w/w of at least one hydrocarbon tackifier resin. The at least one semi-continuous filament exhibits molecular orientation, and at least one of the crystalline polyolefin (co)polymer or the nonwoven web exhibits a Heat of Fusion measured using Differential Scanning Calorimetry of greater than 50 Joules/g. A process for making the semi-continuous filaments and nonwoven webs is also disclosed.
    Type: Application
    Filed: July 30, 2018
    Publication date: July 2, 2020
    Inventors: Eugene G. Joseph, Saurabh Batra, Michael R. Berrigan, John D. Stelter, Jacob J. Thelen, Zackary J. Becker, Liyun Ren, Sachin Talwar, Michael D. Romano