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公开(公告)号：US11820844B2
公开(公告)日：2023-11-21
申请号：US16980175
申请日：2019-03-19
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Nathan E. Schultz , Mikhail A. Belkin , Gerry A. Hoffdahl , Jimmie R. Baran, Jr. , Tien T. Wu
CPC classification number: C08F220/36 , B05D1/007 , B24D3/28 , B24D3/34 , B32B27/14 , C08K3/38 , B82Y30/00 , B82Y40/00 , C08K2003/385 , C08F220/36 , C08F220/1808 , C08F222/102
Abstract: A charge-modified particle comprising the inorganic core and a shell surrounding the inorganic core, wherein the shell comprises a copolymer comprising monomeric units corresponding to free-radically polymerizable monomers, and wherein at least one of the monomeric units comprises a substituted benzotriazolylphenolate salt. Methods of making the charge-modified particle by admicellar polymerization are also disclosed.
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公开(公告)号：US20220227100A1
公开(公告)日：2022-07-21
申请号：US17595597
申请日：2020-06-09
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Heonjoo Ha , Tien Tsung Wu , Nathan E. Schultz , Gerry A. Hoffdahl
IPC: B32B5/26 , H01M50/249 , B32B5/02 , B32B5/08
Abstract: A nonwoven fibrous web includes a flame retardant nonwoven fabric coated with a fire retardant, wherein the fire retardant comprises ammonium polyphosphate or alkali metal silicate; and wherein the flame retardant nonwoven fabric has a first major surface and an opposed second major surface; a first nonwoven fabric covering at least a portion of the first major surface; and a second nonwoven fabric covering at least a portion of the second major surface. The first and second nonwoven fabrics each comprise oxidized polyacrylonitrile fibers and optional reinforcing fibers.
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公开(公告)号：US09422653B2
公开(公告)日：2016-08-23
申请号：US14368549
申请日：2012-12-20
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Tien T. Wu , John W. Henderson , Gustavo H. Castro , Gerry A. Hoffdahl , David L. Vall
IPC: D04H1/732 , D04H1/541 , D04H1/736 , D04H1/413 , D04H1/4382
CPC classification number: D04H1/732 , D04H1/413 , D04H1/4382 , D04H1/541 , D04H1/736
Abstract: Methods and apparatus including a chamber having a substantially open lower end positioned above a collector surface, at least one fiber inlet positioned above the lower end, a first multiplicity of rollers positioned within the chamber wherein each roller has a multiplicity of projections extending outwardly from a circumferential surface surrounding a center axis of rotation, a second multiplicity of rollers positioned within the chamber above the first multiplicity of rollers wherein each of the second multiplicity of rollers has a multiplicity of projections extending outwardly from a circumferential surface surrounding a center axis of rotation, the second multiplicity of rollers positioned so at least a portion of the projections extending outwardly from the circumferential surfaces of each of the second multiplicity of rollers vertically overlaps with at least a portion of the projections extending outwardly from the circumferential surface of at least one of the first multiplicity of rollers.
Abstract translation: 方法和装置包括具有位于收集器表面上方的基本上开口的下端的腔室，位于下端上方的至少一个纤维入口，位于腔室内的第一多个辊，其中每个辊具有多个从一个 围绕中心旋转轴线的圆周表面，位于第一多个辊之上的腔室内的第二多个辊，其中每个第二多个辊具有从围绕旋转中心轴线的周向表面向外延伸的多个突起， 所述第二多个辊定位成使得从所述第二多个辊中的每一个的所述圆周表面向外延伸的所述突起的至少一部分垂直地与从所述第二多个辊的至少一个辊的圆周表面向外延伸的至少一部分突出部 第一乘法 辊子。
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公开(公告)号：US11305224B2
公开(公告)日：2022-04-19
申请号：US16606596
申请日：2017-04-18
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Andrew R. Fox , Himanshu Jasuja , Mikhail A. Belkin , Bryan L. Gerhardt , Glen O. Gregerson , Gerry A. Hoffdahl , Jonathan M. Lise , Tien T. Wu
Abstract: An air filter media (10) including a pleated fibrous filtration web (8) with a first major side (2) that includes at least one sorbent-loaded area (26) in which sorbent particles (14) are present on a first major surface (25) of the pleated fibrous filtration web (8), at least some of the sorbent particles (14) being post-pleat-deposited sorbent particles.
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公开(公告)号：US20210009811A1
公开(公告)日：2021-01-14
申请号：US16980145
申请日：2019-03-19
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Nathan E. Schultz , Li Yao , Tien T. Wu , Gerry A. Hoffdahl , Jimmie R. Baran, JR.
Abstract: A modified aluminum nitride particle comprises an aluminum nitride core and a shell surrounding the aluminum nitride core. The shell comprises a crosslinked organic polymer. Methods of making the modified aluminum nitride particle by admicellar polymerization are also disclosed.
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Patent Agency Ranking
公开(公告)号：US20210002137A1
公开(公告)日：2021-01-07
申请号：US16980175
申请日：2019-03-19
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Nathan E. Schultz , Mikhail A. Belkin , Gerry A. Hoffdahl , Jimmie R. Baran, JR. , Tien T. Wu
IPC: C01B21/064 , C07D249/18 , C08F220/36 , C08K9/08
Abstract: A charge-modified particle comprising the inorganic core and a shell surrounding the inorganic core, wherein the shell comprises a copolymer comprising monomeric units corresponding to free-radically polymerizable monomers, and wherein at least one of the monomeric units comprises a substituted benzotriazolylphenolate salt. Methods of making the charge-modified particle by admicellar polymerization are also disclosed.
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公开(公告)号：US20210283749A1
公开(公告)日：2021-09-16
申请号：US16336157
申请日：2017-09-18
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Aaron K. Nienaber , Grayce T. Huberty , Thomas J. Nelson , Ronald D. Apple , Louis S. Moren , Robinette S. Alkhas , Nathan E. Schultz , Tien T. Wu , Gerry A. Hoffdahl
Abstract: Abrasive articles including a nonwoven fibrous substrate having a plurality of fibers, and a multiplicity of shaped abrasive particles, each shaped abrasive particle adhered to a corresponding fiber, each shaped abrasive particle having a length (L) and a width (W) determined in a direction substantially orthogonal to the length, the ratio of the length to the width defining an aspect ratio (L/W) of at least 1.1, each abrasive particle is oriented relative to its corresponding fiber, and more than 50% of the abrasive particles are oriented with respect to their corresponding fiber such that the abrasive particle length extends generally outwardly away from a surface of the corresponding fiber as determined visually using the Orientation Test. The shaped abrasive particles may have the geometric shape of a polygonal prism having two faces and at least three sides thereon. Methods of making the abrasive articles are also disclosed.
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公开(公告)号：US20170232278A1
公开(公告)日：2017-08-17
申请号：US15585494
申请日：2017-05-03
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： John T. Tushaus , Tien T. Wu , Gerry A. Hoffdahl
CPC classification number: A62B23/025 , A41D13/1146 , A62B18/02 , A62B18/084 , B29C70/12 , B29C70/342 , B29C70/54 , B29K2105/25 , B29L2031/4835 , D04H1/54 , D04H1/541 , D04H1/558 , D04H1/732 , D04H1/76
Abstract: A method of making a filtering face piece respirator, which method includes: providing a cup shaped mold 20; providing a forming chamber 24 where the mold 20 is located and where loose fibers 22 are introduced into air in the forming chamber 24; causing the loose fibers 22 to be accumulated 10 on the mold 20 in the forming chamber 24; and bonding 12 the accumulated fibers to each other at points of fiber intersection, The inventive method thus is beneficial in that it eliminates steps in the manufacturing process. The fibers also are uniformly distributed throughout the mask body, and because the webs do not have to be cut during respirator manufacture, less web waste is generated.
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公开(公告)号：US11351653B2
公开(公告)日：2022-06-07
申请号：US16336157
申请日：2017-09-18
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Aaron K. Nienaber , Grayce T. Huberty , Thomas J. Nelson , Ronald D. Apple , Louis S. Moren , Robinette S. Alkhas , Nathan E. Schultz , Tien T. Wu , Gerry A. Hoffdahl
Abstract: Abrasive articles including a nonwoven fibrous substrate having a plurality of fibers, and a multiplicity of shaped abrasive particles, each shaped abrasive particle adhered to a corresponding fiber, each shaped abrasive particle having a length (L) and a width (W) determined in a direction substantially orthogonal to the length, the ratio of the length to the width defining an aspect ratio (L/W) of at least 1.1, each abrasive particle is oriented relative to its corresponding fiber, and more than 50% of the abrasive particles are oriented with respect to their corresponding fiber such that the abrasive particle length extends generally outwardly away from a surface of the corresponding fiber as determined visually using the Orientation Test. The shaped abrasive particles may have the geometric shape of a polygonal prism having two faces and at least three sides thereon. Methods of making the abrasive articles are also disclosed.
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公开(公告)号：US09580848B2
公开(公告)日：2017-02-28
申请号：US14368540
申请日：2012-12-21
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： John W. Henderson , Tien T. Wu , Gustavo H. Castro , Gerry A. Hoffdahl , David L. Vall
Abstract: Methods and apparatus including a fiber opening chamber having an open upper end and a lower end, at least one fiber inlet for introducing a multiplicity of fibers into the opening chamber, a first multiplicity of rollers positioned within the opening chamber wherein each roller has a multiplicity of projections extending outwardly from a circumferential surface surrounding a center axis of rotation, at least one gas emission nozzle positioned substantially below the first multiplicity of rollers to direct a gas stream generally towards the open upper end of the opening chamber, and a forming chamber having an upper end and a lower end, wherein the upper end of the forming chamber is in flow communication with the open upper end of the opening chamber, and the lower end of the forming chamber is substantially open and positioned above a collector having a collector surface.
Abstract translation: 包括具有开口上端和下端的纤维开口室的方法和装置，至少一个用于将多个纤维引入开口腔的纤维入口，位于开口腔内的第一多个辊，其中每个辊具有多个 从围绕中心旋转轴线的圆周表面向外延伸的突出部分，至少一个气体排放喷嘴，其基本上位于所述第一多个辊的下方，以将气流大致朝向所述开口室的敞开的上端引导;以及成形室， 上端和下端，其中成形室的上端与开口腔的开口上端流动连通，并且成形室的下端基本上是开口的并且位于具有收集器表面的收集器之上 。
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