Patents by Inventor Asheber Yohannes
Asheber Yohannes 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: 11850809Abstract: According to one embodiment, a system for manufacturing a fully impregnated thermoplastic prepreg includes a mechanism for moving a fabric or mat and a drying mechanism that removes residual moisture from at least one surface of the fabric or mat. The system also includes a resin application mechanism that applies a reactive resin to the fabric or mat and a press mechanism that presses the coated fabric or mat to ensure that the resin fully saturates the fabric or mat. The system further includes a curing oven through which the coated fabric or mat is moved to polymerize the resin and thereby form a thermoplastic polymer so that upon exiting the oven, the fabric or mat is fully impregnated with the thermoplastic polymer. During at least a portion of the process, humidity in the vicinity of the coated fabric or mat is maintained at substantially zero.Type: GrantFiled: November 11, 2021Date of Patent: December 26, 2023Assignee: Johns ManvilleInventors: Mingfu Zhang, Klaus Friedrich Gleich, Asheber Yohannes, Michael John Block, Jawed Asrar, Derek Cooper Bristol, Christopher P Sandoval, Matthew Walp, Edwing Chaparro-Chavez, Stanislav O Kukatin, Albert Patrick Faulkinbury, Christopher McBride, Bradley Ray Lockwood, Nicholas Gene Fitzpatrick
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Patent number: 11772336Abstract: According to one embodiment, a system for manufacturing a polymethyl methacrylate (PMMA) prepreg includes a mechanism for continuously moving a fabric or mat and a resin application component that applies a methyl methacrylate (MMA) resin to the fabric or mat. The system also includes a press mechanism that presses the fabric or mat during the continuous movement subsequent to the application of the MMA resin to ensure that the MMA resin fully saturates the fabric or mat. The system further includes a curing oven through which the fabric or mat is continuously moved. The curing oven is maintained at a temperature of between 40° C. and 100° C. to polymerize the MMA resin and thereby form PMMA so that upon exiting the curing oven, the fabric or mat is fully impregnated with PMMA.Type: GrantFiled: August 11, 2020Date of Patent: October 3, 2023Assignee: Johns ManvilleInventors: Mingfu Zhang, Klaus Friedrich Gleich, Asheber Yohannes, Michael John Block, Jawed Asrar, Derek Cooper Bristol, Christopher P Sandoval
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Publication number: 20230234306Abstract: According to one embodiment, a system for manufacturing a fully impregnated thermoplastic prepreg includes a mechanism for moving a fabric or mat and a drying mechanism that removes residual moisture from at least one surface of the fabric or mat. The system also includes a resin application mechanism that applies a reactive resin to the fabric or mat and a press mechanism that presses the coated fabric or mat to ensure that the resin fully saturates the fabric or mat. The system further includes a curing oven through which the coated fabric or mat is moved to polymerize the resin and thereby form a thermoplastic polymer so that upon exiting the oven, the fabric or mat is fully impregnated with the thermoplastic polymer. During at least a portion of the process, humidity in the vicinity of the coated fabric or mat is maintained at substantially zero.Type: ApplicationFiled: April 3, 2023Publication date: July 27, 2023Inventors: Mingfu Zhang, Klaus Friedrich Gleich, Asheber Yohannes, Michael John Block, Jawed Asrar, Derek Cooper Bristol, Christopher P. Sandoval
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Publication number: 20230234305Abstract: According to one embodiment, a system for manufacturing a fully impregnated thermoplastic prepreg includes a mechanism for moving a fabric or mat and a drying mechanism that removes residual moisture from at least one surface of the fabric or mat. The system also includes a resin application mechanism that applies a reactive resin to the fabric or mat and a press mechanism that presses the coated fabric or mat to ensure that the resin fully saturates the fabric or mat. The system further includes a curing oven through which the coated fabric or mat is moved to polymerize the resin and thereby form a thermoplastic polymer so that upon exiting the oven, the fabric or mat is fully impregnated with the thermoplastic polymer. During at least a portion of the process, humidity in the vicinity of the coated fabric or mat is maintained at substantially zero.Type: ApplicationFiled: April 3, 2023Publication date: July 27, 2023Inventors: Mingfu Zhang, Klaus Friedrich Gleich, Asheber Yohannes, Michael John Block, Jawed Asrar, Derek Cooper Bristol, Christopher P Sandoval
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Patent number: 11548245Abstract: Methods of making fiber-containing prepregs are described. The methods may include the steps of providing a plurality of fibers, and applying a reactive resin composition to the plurality of fibers to make a mixture of the plurality of fibers and the resin composition. The reactive resin composition may include at least one of monomers and oligomers capable of polymerizing into a polymerized resin matrix. The mixture may be heated to a polymerization temperature where the monomers, oligomers, or both polymerize to form a fiber-resin amalgam that includes the polymerized resin matrix. The fiber-resin amalgam may be formed into the fiber-containing prepreg. Also described are methods of forming a fiber-reinforced composite that includes the prepreg.Type: GrantFiled: November 22, 2013Date of Patent: January 10, 2023Assignee: Johns ManvilleInventors: Mingfu Zhang, Klaus Friedrich Gleich, Asheber Yohannes, Michael J Block, Jawed Asrar
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Publication number: 20220063217Abstract: According to one embodiment, a system for manufacturing a fully impregnated thermoplastic prepreg includes a mechanism for moving a fabric or mat and a drying mechanism that removes residual moisture from at least one surface of the fabric or mat. The system also includes a resin application mechanism that applies a reactive resin to the fabric or mat and a press mechanism that presses the coated fabric or mat to ensure that the resin fully saturates the fabric or mat. The system further includes a curing oven through which the coated fabric or mat is moved to polymerize the resin and thereby form a thermoplastic polymer so that upon exiting the oven, the fabric or mat is fully impregnated with the thermoplastic polymer. During at least a portion of the process, humidity in the vicinity of the coated fabric or mat is maintained at substantially zero.Type: ApplicationFiled: November 11, 2021Publication date: March 3, 2022Inventors: Mingfu Zhang, Klaus Friedrich Gleich, Asheber Yohannes, Michael John Block, Jawed Asrar, Derek Cooper Bristol, Christopher P Sandoval, Matthew Walp, Edwing Chapparo-Chavez, Stanislav O Kukatin, Albert Patrick Faulkinbury, Christopher McBride, Bradley Ray Lockwood
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Patent number: 11231906Abstract: Embodiments of the present technology may include a method of making a thermoplastic composite concentrates. The method may include melting a low-viscosity reactive resin to form a molten reactive resin. The method may also include fully impregnating a plurality of continuous fibers with the molten reactive resin in an impregnation device. The method may further include polymerizing the molten reactive resin to form a thermoplastic composite strand. In addition, the method may include chopping the thermoplastic composite strand into a plurality of pellets to form a plurality of thermoplastic composite concentrates.Type: GrantFiled: September 5, 2019Date of Patent: January 25, 2022Assignee: Johns ManvilleInventors: Mingfu Zhang, Asheber Yohannes, Michael Block, Klaus Friedrich Gleich, Daniel P De Kock, Jawed Asrar
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Publication number: 20210397410Abstract: Embodiments of the present technology may include a method of making a thermoplastic composite concentrates. The method may include melting a low-viscosity reactive resin to form a molten reactive resin. The method may also include fully impregnating a plurality of continuous fibers with the molten reactive resin in an impregnation device. The method may further include polymerizing the molten reactive resin to form a thermoplastic composite strand. In addition, the method may include chopping the thermoplastic composite strand into a plurality of pellets to form a plurality of thermoplastic composite concentrates.Type: ApplicationFiled: September 5, 2019Publication date: December 23, 2021Inventors: Mingfu Zhang, Asheber Yohannes, Michael Block, Klaus Friedrich Gleich, Daniel P De Kock, Jawed Asrar
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Patent number: 11198259Abstract: According to one embodiment, a system for manufacturing a fully impregnated thermoplastic prepreg includes a mechanism for moving a fabric or mat and a drying mechanism that removes residual moisture from at least one surface of the fabric or mat. The system also includes a resin application mechanism that applies a reactive resin to the fabric or mat and a press mechanism that presses the coated fabric or mat to ensure that the resin fully saturates the fabric or mat. The system further includes a curing oven through which the coated fabric or mat is moved to polymerize the resin and thereby form a thermoplastic polymer so that upon exiting the oven, the fabric or mat is fully impregnated with the thermoplastic polymer. During at least a portion of the process, humidity in the vicinity of the coated fabric or mat is maintained at substantially zero.Type: GrantFiled: April 3, 2018Date of Patent: December 14, 2021Assignee: Johns ManvilleInventors: Mingfu Zhang, Klaus Friedrich Gleich, Asheber Yohannes, Michael John Block, Jawed Asrar, Derek Cooper Bristol, Christopher P Sandoval
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Patent number: 11091598Abstract: Fiber-containing polymethyl methacrylate (PMMA) prepregs are described that include a first and second plurality of fibers. The second plurality of fibers is made from a different material than the first plurality of fibers. The PMMA prepregs also contain a polymerized resin that includes polymethyl methacrylate that has been formed from a reactive resin composition that includes methyl methacrylate. Methods of making fiber-containing PMMA prepregs are also described.Type: GrantFiled: May 13, 2020Date of Patent: August 17, 2021Assignee: Johns ManvilleInventors: Mingfu Zhang, Klaus Friedrich Gleich, Asheber Yohannes, Michael John Block, Jawed Asrar, Derek Cooper Bristol, Christopher P Sandoval
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Patent number: 10954349Abstract: This invention relates to a process of making a fiber-reinforced composite. Glass fibers may be provided. These glass fibers may be treated with a sizing composition that has a coupling-activator compound with the formula: S—X-(A)n, where S represents a silicon-containing coupling moiety capable of bonding to the surface of glass fibers, X represents a linking moiety, and (A)n, represents one or more polymerization activator moieties. The treated glass fibers may be combined with a resin to make a fiber-resin mixture. The resin may have a monomer, a catalyst, and an activator compound capable of initiating a polymerization of the monomer. The monomer may be a lactam or lactone having 3-12 carbon atoms in the main ring. The fiber-resin mixture may then be cured so that the monomer polymerizes to form a thermoplastic polymer matrix of the fiber-reinforced composite. The thermoplastic polymer matrix may be formed by in situ polymerization initiated from both the surface of the glass fibers and the resin.Type: GrantFiled: May 29, 2019Date of Patent: March 23, 2021Assignee: Johns ManvilleInventors: Mingfu Zhang, Klaus Friedrich Gleich, Asheber Yohannes, Michael John Block, Jawed Asrar
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Publication number: 20200368979Abstract: According to one embodiment, a system for manufacturing a polymethyl methacrylate (PMMA) prepreg includes a mechanism for continuously moving a fabric or mat and a resin application component that applies a methyl methacrylate (MMA) resin to the fabric or mat. The system also includes a press mechanism that presses the fabric or mat during the continuous movement subsequent to the application of the MMA resin to ensure that the MMA resin fully saturates the fabric or mat. The system further includes a curing oven through which the fabric or mat is continuously moved. The curing oven is maintained at a temperature of between 40° C. and 100° C. to polymerize the MMA resin and thereby form PMMA so that upon exiting the curing oven, the fabric or mat is fully impregnated with PMMA.Type: ApplicationFiled: August 11, 2020Publication date: November 26, 2020Inventors: Mingfu Zhang, Klaus Friedrich Gleich, Asheber Yohannes, Michael John Block, Jawed Asrar, Derek Cooper Bristol, Christopher P. Sandoval
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Patent number: 10780609Abstract: Methods of making prepregs are described. The methods include the steps of forming a fiber-containing substrate, and contacting the fiber-containing substrate with a resin mixture. The resin mixture may include polymer particles mixed in a liquid medium, and the polymer particles may be coated on the fiber-containing substrate to form a coated substrate. The liquid medium may be removed from the coated substrate to form the prepreg. The prepregs may be used to make fiber-reinforced articles.Type: GrantFiled: November 21, 2017Date of Patent: September 22, 2020Assignee: Jonhs ManvilleInventors: Mingfu Zhang, Jawed Asrar, Klaus Friedrich Gleich, Asheber Yohannes
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Patent number: 10773474Abstract: According to one embodiment, a system for manufacturing a polymethyl methacrylate (PMMA) prepreg includes a mechanism for continuously moving a fabric or mat and a resin application component that applies a methyl methacrylate (MMA) resin to the fabric or mat. The system also includes a press mechanism that presses the fabric or mat during the continuous movement subsequent to the application of the MMA resin to ensure that the MMA resin fully saturates the fabric or mat. The system further includes a curing oven through which the fabric or mat is continuously moved. The curing oven is maintained at a temperature of between 40° C. and 100° C. to polymerize the MMA resin and thereby form PMMA so that upon exiting the curing oven, the fabric or mat is fully impregnated with PMMA.Type: GrantFiled: July 11, 2018Date of Patent: September 15, 2020Assignee: Johns ManvilleInventors: Mingfu Zhang, Klaus Friedrich Gleich, Asheber Yohannes, Michael John Block, Jawed Asrar, Derek Cooper Bristol, Christopher P Sandoval
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Publication number: 20200277460Abstract: Fiber-containing polymethyl methacrylate (PMMA) prepregs are described that include a first and second plurality of fibers. The second plurality of fibers is made from a different material than the first plurality of fibers. The PMMA prepregs also contain a polymerized resin that includes polymethyl methacrylate that has been formed from a reactive resin composition that includes methyl methacrylate. Methods of making fiber-containing PMMA prepregs are also described.Type: ApplicationFiled: May 13, 2020Publication date: September 3, 2020Inventors: Mingfu Zhang, Klaus Friedrich Gleich, Asheber Yohannes, Michael John Block, Jawed Asrar, Derek Cooper Bristol, Christopher P Sandoval
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Patent number: 10730271Abstract: Methods of making prepregs are described. The methods include the steps of forming a fiber-containing substrate, and contacting the fiber-containing substrate with a resin mixture. The resin mixture may include polymer particles mixed in a liquid medium, and the polymer particles may be coated on the fiber-containing substrate to form a coated substrate. The liquid medium may be removed from the coated substrate to form the prepreg. The prepregs may be used to make fiber-reinforced articles.Type: GrantFiled: August 9, 2018Date of Patent: August 4, 2020Assignee: Johns ManvilleInventors: Mingfu Zhang, Jawed Asrar, Klaus Friedrich Gleich, Asheber Yohannes
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Patent number: 10683406Abstract: Fiber-containing polymethyl methacrylate (PMMA) prepregs are described that include a first and second plurality of fibers. The second plurality of fibers is made from a different material than the first plurality of fibers. The PMMA prepregs also contain a polymerized resin that includes polymethyl methacrylate that has been formed from a reactive resin composition that includes methyl methacrylate. Methods of making fiber-containing PMMA prepregs are also described.Type: GrantFiled: October 9, 2017Date of Patent: June 16, 2020Assignee: Johns ManvilleInventors: Mingfu Zhang, Klaus Friedrich Gleich, Asheber Yohannes, Michael John Block, Jawed Asrar, Derek Cooper Bristol, Christopher P Sandoval
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Patent number: 10569483Abstract: According to one embodiment, a system for manufacturing a polymethyl methacrylate (PMMA) prepreg includes a mechanism for continuously moving a fabric or mat and a resin application component that applies a methyl methacrylate (MMA) resin to the fabric or mat. The system also includes a press mechanism that presses the fabric or mat during the continuous movement subsequent to the application of the MMA resin to ensure that the MMA resin fully saturates the fabric or mat. The system further includes a curing oven through which the fabric or mat is continuously moved. The curing oven is maintained at a temperature of between 40° C. and 100° C. to polymerize the MMA resin and thereby form PMMA so that upon exiting the curing oven, the fabric or mat is fully impregnated with PMMA.Type: GrantFiled: May 8, 2019Date of Patent: February 25, 2020Inventors: Mingfu Zhang, Klaus Friedrich Gleich, Asheber Yohannes, Michael John Block, Jawed Asrar, Derek Cooper Bristol, Christopher P Sandoval
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Publication number: 20200004499Abstract: Embodiments of the present technology may include a method of making a thermoplastic composite concentrates. The method may include melting a low-viscosity reactive resin to form a molten reactive resin. The method may also include fully impregnating a plurality of continuous fibers with the molten reactive resin in an impregnation device. The method may further include polymerizing the molten reactive resin to form a thermoplastic composite strand. In addition, the method may include chopping the thermoplastic composite strand into a plurality of pellets to form a plurality of thermoplastic composite concentrates.Type: ApplicationFiled: September 5, 2019Publication date: January 2, 2020Inventors: Mingfu Zhang, Asheber Yohannes, Michael Block, Klaus Friedrich Gleich, Daniel P De Kock, Jawed Asrar
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Publication number: 20190322822Abstract: Methods of making fiber-resin compositions are described. The methods may include the providing of a thermoplastic resin to an extruder, where the thermoplastic resin may include at least one reactive moiety capable of forming a covalent bond with a coupling agent on a plurality of reactive fibers. The methods may further include combining the thermoplastic resin with the plurality of reactive fibers also supplied to the extruder. The reactive fibers are sized with the coupling agent that reacts with the thermoplastic resin to form the fiber-resin composition, which may be extruded from the extruder. Methods of making fiber-reinforced composite articles from the fiber-resin composition are also described.Type: ApplicationFiled: July 2, 2019Publication date: October 24, 2019Inventors: Michael J Block, Mingfu Zhang, Asheber Yohannes, Klaus Friedrich Gleich, Jawed Asrar