Patents by Inventor James M. Witsch
James M. Witsch 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: 12343666Abstract: Filter media including out-of-plane solid elements are generally described. Inventive methods of forming them and uses thereof are also described.Type: GrantFiled: April 7, 2020Date of Patent: July 1, 2025Assignee: Hollingsworth & Vose CompanyInventors: Mark Rowlands, James M. Witsch, Wei Mu, Stephan Daus
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Publication number: 20240382886Abstract: Filter media comprising surface-treated fiber webs having one or more advantageous physical properties are generally described. Certain improvements in the surface-treated fiber webs described herein may be realized in filter media comprising adsorbent particles. The improvements herein are, in some embodiments, related to favorable distributions of cavities in surface-treated fiber webs, such as those used in backers of the filter media.Type: ApplicationFiled: May 18, 2023Publication date: November 21, 2024Applicant: Hollingsworth & Vose CompanyInventors: Sudheer Jinka, Praveen Kumar Yegya Raman, James M. Witsch
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Publication number: 20230051258Abstract: Filter media comprising non-woven fiber webs having one or more advantageous physical properties are generally described. In some embodiments, a filter media and/or non-woven fiber web described herein comprises a combination of fibers that results in enhanced physical properties. For example, the non-woven fiber web may comprise a combination of fiber types that is advantageous, such as a combination comprising fibrillated fibers, glass fibers, and/or binder fibers. In some cases, the filter media and/or non-woven fiber web comprising the combination of fibers may be formed into undulations (e.g., by a creping and/or microcreping process) to further enhance the physical properties of the filter media and/or non-woven fiber.Type: ApplicationFiled: June 22, 2022Publication date: February 16, 2023Applicant: Hollingsworth & Vose CompanyInventors: Sudhakar Jaganathan, Xinquan Cheng, Howard Yu, Leilei Luo, Zhiping Jiang, Yu Liu, Mark Rowlands, Wei Mu, James M. Witsch, Stephan Daus
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Publication number: 20210308609Abstract: Filter media including out-of-plane solid elements are generally described. Inventive methods of forming them and uses thereof are also described.Type: ApplicationFiled: April 7, 2020Publication date: October 7, 2021Applicant: Hollingsworth & Vose CompanyInventors: Mark Rowlands, James M. Witsch, Wei Mu, Stephan Daus
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Publication number: 20150004385Abstract: The fiber webs described herein may be incorporated into filter media and filter elements. The fiber webs may exhibit a high dust holding capacity. The fiber webs may also exhibit a low thickness. The fiber webs may be sufficiently flexible and/or deformable so that they may be processed to include a series of waves (also known as flutes) that extend along the cross-machine direction.Type: ApplicationFiled: June 9, 2014Publication date: January 1, 2015Applicant: Hollingsworth & Vose CompanyInventors: James M. Witsch, Douglas M. Guimond
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Patent number: 8790492Abstract: The fiber webs described herein may be incorporated into filter media and filter elements. The fiber webs may exhibit a high dust holding capacity. The fiber webs may also exhibit a low thickness. The fiber webs may be sufficiently flexible and/or deformable so that they may be processed to include a series of waves (also known as flutes) that extend along the cross-machine direction.Type: GrantFiled: August 16, 2013Date of Patent: July 29, 2014Assignee: Hollingsworth & Vose CompanyInventors: James M. Witsch, Douglas M. Guimond
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Patent number: 8778046Abstract: The fiber webs described herein may be incorporated into filter media and filter elements. The fiber webs may exhibit a high dust holding capacity. The fiber webs may also exhibit a low thickness. The fiber webs may be sufficiently flexible and/or deformable so that they may be processed to include a series of waves (also known as flutes) that extend along the cross-machine direction.Type: GrantFiled: August 16, 2013Date of Patent: July 15, 2014Assignee: Hollingsworth & Vose CompanyInventors: James M. Witsch, Douglas M. Guimond
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Patent number: 8778047Abstract: The fiber webs described herein may be incorporated into filter media and filter elements. The fiber webs may exhibit a high dust holding capacity. The fiber webs may also exhibit a low thickness. The fiber webs may be sufficiently flexible and/or deformable so that they may be processed to include a series of waves (also known as flutes) that extend along the cross-machine direction.Type: GrantFiled: August 16, 2013Date of Patent: July 15, 2014Assignee: Hollingsworth & Vose CompanyInventors: James M. Witsch, Douglas M. Guimond
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Publication number: 20140047809Abstract: The fiber webs described herein may be incorporated into filter media and filter elements. The fiber webs may exhibit a high dust holding capacity. The fiber webs may also exhibit a low thickness. The fiber webs may be sufficiently flexible and/or deformable so that they may be processed to include a series of waves (also known as flutes) that extend along the cross-machine direction.Type: ApplicationFiled: August 16, 2013Publication date: February 20, 2014Applicant: Hollingsworth & Vose CompanyInventors: James M. Witsch, Douglas M. Guimond
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Publication number: 20130333341Abstract: The fiber webs described herein may be incorporated into filter media and filter elements. The fiber webs may exhibit a high dust holding capacity. The fiber webs may also exhibit a low thickness. The fiber webs may be sufficiently flexible and/or deformable so that they may be processed to include a series of waves (also known as flutes) that extend along the cross-machine direction.Type: ApplicationFiled: August 16, 2013Publication date: December 19, 2013Applicant: Hollingsworth & Vose CompanyInventors: James M. Witsch, Douglas M. Guimond
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Publication number: 20130333852Abstract: The fiber webs described herein may be incorporated into filter media and filter elements. The fiber webs may exhibit a high dust holding capacity. The fiber webs may also exhibit a low thickness. The fiber webs may be sufficiently flexible and/or deformable so that they may be processed to include a series of waves (also known as flutes) that extend along the cross-machine direction.Type: ApplicationFiled: August 16, 2013Publication date: December 19, 2013Applicant: Hollingworth & Vose CompanyInventors: James M. Witsch, Douglas M. Guimond
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Patent number: 8545590Abstract: The fiber webs described herein may be incorporated into filter media and filter elements. The fiber webs may exhibit a high dust holding capacity. The fiber webs may also exhibit a low thickness. The fiber webs may be sufficiently flexible and/or deformable so that they may be processed to include a series of waves (also known as flutes) that extend along the cross-machine direction.Type: GrantFiled: December 29, 2011Date of Patent: October 1, 2013Assignee: Hollingsworth & Vose CompanyInventors: James M. Witsch, Douglas M. Guimond
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Patent number: 8236082Abstract: The fiber webs described herein may be incorporated into filter media and filter elements. The fiber webs may exhibit a high dust holding capacity. The fiber webs may also exhibit a low thickness. The fiber webs may be sufficiently flexible and/or deformable so that they may be processed to include a series of waves (also known as flutes) that extend along the cross-machine direction.Type: GrantFiled: June 19, 2009Date of Patent: August 7, 2012Assignee: Hollingsworth & Vose CompanyInventors: James M. Witsch, Douglas M. Guimond
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Publication number: 20120097032Abstract: The fiber webs described herein may be incorporated into filter media and filter elements. The fiber webs may exhibit a high dust holding capacity. The fiber webs may also exhibit a low thickness. The fiber webs may be sufficiently flexible and/or deformable so that they may be processed to include a series of waves (also known as flutes) that extend along the cross-machine direction.Type: ApplicationFiled: December 29, 2011Publication date: April 26, 2012Applicant: Hollingsworth & Vose CompanyInventors: James M. Witsch, Douglas M. Guimond
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Publication number: 20100319543Abstract: The fiber webs described herein may be incorporated into filter media and filter elements. The fiber webs may exhibit a high dust holding capacity. The fiber webs may also exhibit a low thickness. The fiber webs may be sufficiently flexible and/or deformable so that they may be processed to include a series of waves (also known as flutes) that extend along the cross-machine direction.Type: ApplicationFiled: June 19, 2009Publication date: December 23, 2010Applicant: Hollingsworth & Vose CompanyInventors: James M. Witsch, Douglas M. Guimond
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Publication number: 20100314333Abstract: The fiber webs described herein may be incorporated into filter media and filter elements. The fiber webs may exhibit a low surface electrical resistivity. The fiber webs may also be sufficiently flexible and/or deformable so that they may be processed to include a series of waves (also known as flutes) that extend along the cross-machine direction.Type: ApplicationFiled: July 7, 2009Publication date: December 16, 2010Applicant: Hollingsworth & Vose CompanyInventors: James M. Witsch, Christophe Lefaux