Patents by Inventor Peiwang Zhu
Peiwang Zhu 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: 9551816Abstract: Retroreflecting optical constructions are disclosed. A disclosed retroreflecting optical construction includes a retroreflecting layer that has a retroreflecting structured major surface, and an optical film that is disposed on the retroreflecting structured major surface of the retroreflecting layer. The optical film has an optical haze that is not less than about 30%. Substantial portions of each two neighboring major surfaces in the retroreflecting optical construction are in physical contact with each other.Type: GrantFiled: March 21, 2016Date of Patent: January 24, 2017Assignee: 3M Innovative Properties CompanyInventors: William D. Coggio, John S. Huizinga, Michael L. Steiner, Robert F. Watkins, Encai Hao, William B. Kolb, Peiwang Zhu, Michael Benton Free, Brant U. Kolb, Kui Chen-Ho, Paul E. Humpal, Scott M. Tapio, Kenneth L. Smith
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Patent number: 9458327Abstract: A multifunctional polymerizable ionic liquid is described comprising an anion and a cationic group having at least two ethylenically unsaturated polymerizable groups, each bonded to the cationic group via a divalent non-alkyl linking group. The multifunctional linking groups independently comprise a heteroatom such as oxygen or nitrogen. The linking groups may independently comprise one or more linkages such as an amide, urea, and more typically a urethane or ester linkage. The ethylenically unsaturated polymerizable groups are typically (meth)acrylate groups. Coatings and coated articles are also described.Type: GrantFiled: April 2, 2014Date of Patent: October 4, 2016Inventors: Kevin M. Lewandowski, Larry R. Krepski, Yizhong Wang, Joel D. Oxman, Peiwang Zhu, Brian N. Holmes, Thomas P. Klun, Bryan V. Hunt
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Publication number: 20160202398Abstract: Retroreflecting optical constructions are disclosed. A disclosed retroreflecting optical construction includes a retroreflecting layer that has a retroreflecting structured major surface, and an optical film that is disposed on the retroreflecting structured major surface of the retroreflecting layer. The optical film has an optical haze that is not less than about 30%. Substantial portions of each two neighboring major surfaces in the retroreflecting optical construction are in physical contact with each other.Type: ApplicationFiled: March 21, 2016Publication date: July 14, 2016Inventors: WILLIAM D. COGGIO, JOHN S. HUIZINGA, MICHAEL L. STEINER, ROBERT F. WATKINS, ENCAI HAO, WILLIAM B. KOLB, PEIWANG ZHU, MICHAEL BENTON FREE, BRANT U. KOLB, KUI CHEN-HO, PAUL E. HUMPAL, SCOTT M. TAPIO, KENNETH L. SMITH
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Patent number: 9291752Abstract: Retroreflecting optical constructions are disclosed. A disclosed retroreflecting optical construction includes a retroreflecting layer that has a retroreflecting structured major surface, and an optical film that is disposed on the retroreflecting structured major surface of the retroreflecting layer. The optical film has an optical haze that is not less than about 30%. Substantial portions of each two neighboring major surfaces in the retroreflecting optical construction are in physical contact with each other.Type: GrantFiled: August 19, 2013Date of Patent: March 22, 2016Assignee: 3M Innovative Properties CompanyInventors: William D. Coggio, John S Huizinga, Michael L. Steiner, Robert F. Watkins, Encai Hao, William B. Kolb, Peiwang Zhu, Michael Benton Free, Brant U. Kolb, Kui Chen-Ho, Paul E. Humpal, Scott M. Tapio, Kenneth L. Smith
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Patent number: 9168206Abstract: Presently described are curable dental compositions comprising a polymerizable ionic liquid. The polymerizable ionic liquid comprises one or more ethylenically unsaturated (e.g. free-radically polymerizable) groups. Various embodiments of curable dental compositions are described. In some embodiments, the polymerizable ionic liquid is a monofunctional polymerizable ionic liquid comprising an ethylenically unsaturated group. In other embodiments, the polymerizable ionic liquid is a multifunctional polymerizable ionic liquid comprising at least two ethylenically unsaturated groups. The curable dental compositions describe herein can be utilized as dental primers, dental adhesives, dental sealants, and dental composites. In many embodiments, the curable dental compositions further comprise an initiator such as a photoinitiator.Type: GrantFiled: September 8, 2014Date of Patent: October 27, 2015Assignee: 3M Innovative Properties CompanyInventors: Yizhong Wang, Joel D. Oxman, Larry R. Krepski, Peiwang Zhu, Kevin M. Lewandowski, Brian N. Holmes
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Patent number: 9127101Abstract: Presently described are curable compositions comprising a mixture of at least one (e.g. free-radically) polymerizable ionic liquid and at least one other ethylenically unsaturated monomer, oligomer, or polymer. The polymerizable ionic liquid is characterized as having an air to nitrogen curing exotherm ratio of at least 0.70. Also described are articles and methods of making articles from such curable compositions. A monofunctional polymerizable ionic liquid is also described comprising a non-polymerizable substituted imidazolium cationic group and a polymerizable sulfonate anion.Type: GrantFiled: July 15, 2014Date of Patent: September 8, 2015Assignee: 3M Innovative Properties CompanyInventors: Yizhong Wang, Joel D. Oxman, Larry R. Krepski, Peiwang Zhu, Kevin M. Lewandowski, Brian N. Holmes, Richard L. Severance, Joseph D. Rule, Thomas P. Klun
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Patent number: 8992720Abstract: A pressure sensitive adhesive composition is described comprising a polyisobutylene polymer having a first functional group and an acrylic polymer having a second functional group present in the acrylic polymer backbone. The first and second functional groups form a hydrogen bond. In some embodiments, the adhesive composition further comprises a crosslinker that covalently crosslinks the second functional group(s) present in the polymer backbone of the acrylic polymer. Also described are adhesive articles, such as a tape, methods of adhesively bonding, and methods of making a pressure sensitive adhesive.Type: GrantFiled: November 15, 2010Date of Patent: March 31, 2015Assignee: 3M Innovative Properties CompanyInventors: Vivek Bharti, Guy D. Joly, Shujun Wang, Peiwang Zhu, Babu N. Gaddam, Sanat Mohanty, Jingjing Ma
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Publication number: 20150049384Abstract: Retroreflecting optical constructions are disclosed. A disclosed retroreflecting optical construction includes a retroreflecting layer that has a retroreflecting structured major surface, and an optical film that is disposed on the retroreflecting structured major surface of the retroreflecting layer. The optical film has an optical haze that is not less than about 30%. Substantial portions of each two neighboring major surfaces in the retroreflecting optical construction are in physical contact with each other.Type: ApplicationFiled: August 19, 2013Publication date: February 19, 2015Applicant: 3M Innovative Properties CompanyInventors: William D. Coggio, John S Huizinga, Michael L. Steiner, Robert F. Watkins, Encai Hao, William B. Kolb, Peiwang Zhu, Michael B. Free, Brant U. Kolb, Kui Chen-Ho, Paul E. Humpal, Scott M. Tapio
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Publication number: 20140377717Abstract: Presently described are curable dental compositions comprising a polymerizable ionic liquid. The polymerizable ionic liquid comprises one or more ethylenically unsaturated (e.g. free-radically polymerizable) groups. Various embodiments of curable dental compositions are described. In some embodiments, the polymerizable ionic liquid is a monofunctional polymerizable ionic liquid comprising an ethylenically unsaturated group. In other embodiments, the polymerizable ionic liquid is a multifunctional polymerizable ionic liquid comprising at least two ethylenically unsaturated groups. The curable dental compositions describe herein can be utilized as dental primers, dental adhesives, dental sealants, and dental composites. In many embodiments, the curable dental compositions further comprise an initiator such as a photoinitiator.Type: ApplicationFiled: September 8, 2014Publication date: December 25, 2014Inventors: YIZHONG WANG, JOEL D. OXMAN, LARRY R. KREPSKI, PEIWANG ZHU, KEVIN M. LEWANDOWSKI, BRIAN N. HOLMES
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Publication number: 20140322550Abstract: Presently described are curable compositions comprising a mixture of at least one (e.g. free-radically) polymerizable ionic liquid and at least one other ethylenically unsaturated monomer, oligomer, or polymer. The polymerizable ionic liquid is characterized as having an air to nitrogen curing exotherm ratio of at least 0.70. Also described are articles and methods of making articles from such curable compositions. A monofunctional polymerizable ionic liquid is also described comprising a non-polymerizable substituted imidazolium cationic group and a polymerizable sulfonate anion.Type: ApplicationFiled: July 15, 2014Publication date: October 30, 2014Inventors: YIZHONG WANG, JOEL D. OXMAN, LARRY R. KREPSKI, PEIWANG ZHU, KEVIN M. LEWANDOWSKI, BRIAN M. HOLMES, RICHARD L. SEVERANCE, JOSEPH D. RULE, THOMAS P. KLUN
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Patent number: 8853338Abstract: Presently described are curable dental compositions comprising a polymerizable ionic liquid. The polymerizable ionic liquid comprises one or more ethylenically unsaturated (e.g. free-radically polymerizable) groups. Various embodiments of curable dental compositions are described. In some embodiments, the polymerizable ionic liquid is a monofunctional polymerizable ionic liquid comprising an ethylenically unsaturated group. In other embodiments, the polymerizable ionic liquid is a multifunctional polymerizable ionic liquid comprising at least two ethylenically unsaturated groups. The curable dental compositions describe herein can be utilized as dental primers, dental adhesives, dental sealants, and dental composites. In many embodiments, the curable dental compositions further comprise an initiator such as a photoinitiator.Type: GrantFiled: December 6, 2010Date of Patent: October 7, 2014Assignee: 3M Innovative Properties CompanyInventors: Yizhong Wang, Joel D. Oxman, Larry R. Krepski, Peiwang Zhu, Kevin M. Lewandowski, Brian N. Holmes
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Patent number: 8816029Abstract: Presently described are curable compositions comprising a mixture of at least one (e.g. free-radically) polymerizable ionic liquid and at least one other ethylenically unsaturated monomer, oligomer, or polymer. The polymerizable ionic liquid is characterized as having an air to nitrogen curing exotherm ratio of at least 0.70. Also described are articles and methods of making articles from such curable compositions. A monofunctional polymerizable ionic liquid is also described comprising a non-polymerizable substituted imidazolium cationic group and a polymerizable sulfonate anion.Type: GrantFiled: August 26, 2010Date of Patent: August 26, 2014Assignee: 3M Innovative Properties CompanyInventors: Yizhong Wang, Joel D. Oxman, Larry R. Krepski, Peiwang Zhu, Kevin M. Lewandowski, Brian N. Holmes, Richard L. Severance, Joseph D. Rule, Thomas P. Klun
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Publication number: 20140213726Abstract: A multifunctional polymerizable ionic liquid is described comprising an anion and a cationic group having at least two ethylenically unsaturated polymerizable groups, each bonded to the cationic group via a divalent non-alkyl linking group. The multifunctional linking groups independently comprise a heteroatom such as oxygen or nitrogen. The linking groups may independently comprise one or more linkages such as an amide, urea, and more typically a urethane or ester linkage. The ethylenically unsaturated polymerizable groups are typically (meth)acrylate groups. Coatings and coated articles are also described.Type: ApplicationFiled: April 2, 2014Publication date: July 31, 2014Applicant: 3M INNOVATIVE PROPERTIES COMPANYInventors: Kevin M. Lewandowski, Larry R. Krepski, Yizhong Wang, Joel D. Oxman, Peiwang Zhu, Brian N. Holmes, Thomas P. Klun, Bryan V. Hunt
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Patent number: 8742047Abstract: A multifunctional polymerizable ionic liquid is described comprising an anion and a cationic group having at least two ethylenically unsaturated polymerizable groups, each bonded to the cationic group via a divalent non-alkyl linking group. The multifunctional linking groups independently comprise a heteroatom such as oxygen or nitrogen. The linking groups may independently comprise one or more linkages such as an amide, urea, or ether linkage and more typically a urethane or ester linkage. The ethylenically unsaturated polymerizable groups are typically (meth)acrylate groups. Coatings and coated articles are also described.Type: GrantFiled: August 24, 2010Date of Patent: June 3, 2014Assignee: 3M Innovative Properties CompanyInventors: Kevin M. Lewandowski, Larry R. Krepski, Yizhong Wang, Joel D. Oxman, Peiwang Zhu, Brian N. Holmes, Thomas P. Klun, Bryan V. Hunt
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Patent number: 8552130Abstract: Presently described are polymerizable ionic liquids comprising a cation and an aromatic carboxylate anion; wherein the cation, anion, or both comprise a free-radically polymerizable group. Also described are curable compositions comprising such polymerizable ionic liquids and at least one other free-radically polymerizable monomer, oligomer, or polymer.Type: GrantFiled: May 16, 2011Date of Patent: October 8, 2013Assignee: 3M Innovative Properties CompanyInventors: Kevin M. Lewandowski, Yizhong Wang, Larry R. Krepski, Joel D. Oxman, Peiwang Zhu
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Patent number: 8534849Abstract: Retroreflecting optical constructions are disclosed. A disclosed retroreflecting optical construction includes a retroreflecting layer that has a retroreflecting structured major surface, and an optical film that is disposed on the retroreflecting structured major surface of the retroreflecting layer. The optical film has an optical haze that is not less than about 30%. Substantial portions of each two neighboring major surfaces in the retroreflecting optical construction are in physical contact with each other.Type: GrantFiled: April 15, 2010Date of Patent: September 17, 2013Assignee: 3M Innovative Properties CompanyInventors: William D. Coggio, John S. Huizinga, Michael L. Steiner, Robert F. Watkins, Encai Hao, William B. Kolb, Peiwang Zhu, Michael Benton Free, Brant U. Kolb, Kui Chen-Ho, Paul E. Humpal, Kenneth L. Smith, Scott M. Tapio
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Patent number: 8530578Abstract: A pressure sensitive adhesive composition is described comprising unfunctionalized (e.g. polyisobutylene) synthetic rubber and an acrylic polymer having functionalized polyisobutylene polymer bonded to the acrylic polymer. In some embodiments, the functionalized polyisobutylene polymer has a first functional group hydrogen bonded with a second functional group present in the acrylic polymer backbone. In other embodiments, the functionalized polyisobutylene polymer is covalently bonded to the acrylic polymer backbone. Also described are adhesive articles, such as a tape, methods of adhesively bonding, and methods of making a pressure sensitive adhesive.Type: GrantFiled: November 15, 2010Date of Patent: September 10, 2013Assignee: 3M Innovative Properties CompanyInventors: Vivek Bharti, Shujun Wang, Guy D. Joly, Babu N. Gaddam, Jingjing Ma, Sanat Mohanty, Peiwang Zhu
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Patent number: 8524836Abstract: A pre-adhesive syrup copolymer composition comprising an acid functional acrylate solute copolymer, a monomer solvent mixture, and a polyaziridine crosslinking agent is disclosed.Type: GrantFiled: February 8, 2013Date of Patent: September 3, 2013Assignee: 3M Innovative Properties CompanyInventors: Maureen A. Kavanagh, Belma Erdogan-Haug, Larry R. Krepski, Peiwang Zhu, Babu N. Gaddam, Dang Xie, Wen Jie Zhang, Qing Wu
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Patent number: 8507612Abstract: A crosslinkable, pre-adhesive composition is described comprising an acid-functional (meth)acrylate copolymer and an aziridine crosslinking agent, which when crosslinked provides a pressure-sensitive adhesive and pressure-sensitive adhesive articles.Type: GrantFiled: February 22, 2010Date of Patent: August 13, 2013Assignee: 3M Innovative Properties CompanyInventors: Peiwang Zhu, Zhong Chen, Babu N. Gaddam, Larry R. Krepski, Jingjing Ma, David B. Olson, Andrew Satrijo, Dong-Wei Zhu
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Publication number: 20130059975Abstract: Presently described are polymerizable ionic liquids comprising a cation and an aromatic carboxylate anion; wherein the cation, anion, or both comprise a free-radically polymerizable group. Also described are curable compositions comprising such polymerizable ionic liquids and at least one other free-radically polymerizable monomer, oligomer, or polymer.Type: ApplicationFiled: May 16, 2011Publication date: March 7, 2013Inventors: Kevin M. Lewandowski, Yizhong Wang, Larry R. Krepski, Joel D. Oxman, Peiwang Zhu