Patents by Inventor Erik S. Weiser
Erik S. Weiser 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: 8017190Abstract: A metal/fiber laminate has a plurality of adjacent layers. Each layer is porous and includes an arrangement of fibers. At least one of the layers has its fibers coated with a metal. A polymer matrix permeates each such arrangement.Type: GrantFiled: October 18, 2010Date of Patent: September 13, 2011Assignee: United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventors: Stephen J. Hales, Joel A. Alexa, Brian J. Jensen, Roberto J. Cano, Erik S. Weiser
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Patent number: 7977411Abstract: The invention involves composite materials containing a polymer foam and an aerogel. The composite materials have improved thermal insulation ability, good acoustic insulation, and excellent physical mechanical properties. The composite materials can be used, for instance, for heat and acoustic insulation on aircraft, spacecraft, and maritime ships in place of currently used foam panels and other foam products. The materials of the invention can also be used in building construction with their combination of light weight, strength, elasticity, ability to be formed into desired shapes, and superior thermal and acoustic insulation power. The materials have also been found to have utility for storage of cryogens. A cryogenic liquid or gas, such as N2 or H2, adsorbs to the surfaces in aerogel particles. Thus, another embodiment of the invention provides a storage vessel for a cryogen.Type: GrantFiled: July 13, 2010Date of Patent: July 12, 2011Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventors: Martha K. Williams, Trent M. Smith, James E. Fesmire, Erik S. Weiser, Jared P. Sass
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Patent number: 7964698Abstract: The benefits of liquid crystal polymers and polyetherimides are combined in an all-aromatic thermoplastic liquid crystalline polyetherimide. Because of the unique molecular structure, all-aromatic thermotropic liquid crystal polymers exhibit outstanding processing properties, excellent barrier properties, low solubilities and low coefficients of thermal expansion in the processing direction. These characteristics are combined with the strength, thermal, and radiation stability of polyetherimides.Type: GrantFiled: November 5, 2007Date of Patent: June 21, 2011Assignee: United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventors: Erik S. Weiser, Theodorus J. Dingemans, Terry L. St. Clair, Jeffrey A. Hinkley
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Publication number: 20110070793Abstract: A metal/fiber laminate has a plurality of adjacent layers. Each layer is porous and includes an arrangement of fibers. At least one of the layers has its fibers coated with a metal. A polymer matrix permeates each such arrangement.Type: ApplicationFiled: October 18, 2010Publication date: March 24, 2011Applicants: United States of America as represented by the Administrator of the National AeronauticsInventors: Stephen J. Hales, Joel A. Alexa, Brian J. Jensen, Roberto J. Cano, Erik S. Weiser
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Patent number: 7851062Abstract: A metal/fiber laminate has a plurality of adjacent layers. Each layer is porous and includes an arrangement of fibers. At least one of the layers has its fibers coated with a metal. A polymer matrix permeates each such arrangement.Type: GrantFiled: May 21, 2008Date of Patent: December 14, 2010Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventors: Stephen J. Hales, Joel A. Alexa, Brian J. Jensen, Roberto J. Cano, Erik S. Weiser
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Publication number: 20100275617Abstract: The invention involves composite materials containing a polymer foam and an aerogel. The composite materials have improved thermal insulation ability, good acoustic insulation, and excellent physical mechanical properties. The composite materials can be used, for instance, for heat and acoustic insulation on aircraft, spacecraft, and maritime ships in place of currently used foam panels and other foam products. The materials of the invention can also be used in building construction with their combination of light weight, strength, elasticity, ability to be formed into desired shapes, and superior thermal and acoustic insulation power. The materials have also been found to have utility for storage of cryogens. A cryogenic liquid or gas, such as N2 or H2, adsorbs to the surfaces in aerogel particles. Thus, another embodiment of the invention provides a storage vessel for a cryogen.Type: ApplicationFiled: July 13, 2010Publication date: November 4, 2010Applicants: Space AdministrationInventors: Martha K. Williams, Trent M. Smith, James E. Fesmire, Erik S. Weiser, Jared P. Sass
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Patent number: 7781492Abstract: The invention involves composite materials containing a polymer foam and an aerogel. The composite materials have improved thermal insulation ability, good acoustic insulation, and excellent physical mechanical properties. The composite materials can be used, for instance, for heat and acoustic insulation on aircraft, spacecraft, and maritime ships in place of currently used foam panels and other foam products. The materials of the invention can also be used in building construction with their combination of light weight, strength, elasticity, ability to be formed into desired shapes, and superior thermal and acoustic insulation power. The materials have also been found to have utility for storage of cryogens. A cryogenic liquid or gas, such as N2 or H2, adsorbs to the surfaces in aerogel particles. Thus, another embodiment of the invention provides a storage vessel for a cryogen.Type: GrantFiled: June 7, 2007Date of Patent: August 24, 2010Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventors: Martha K. Williams, Trent M. Smith, James E. Fesmire, Erik S. Weiser, Jared P. Sass
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Patent number: 7595112Abstract: A method of fabricating a metal/composite hybrid laminate is provided. One or more layered arrangements are stacked on a solid base to form a layered structure. Each layered arrangement is defined by a fibrous material and a perforated metal sheet. A resin in its liquid state is introduced along a portion of the layered structure while a differential pressure is applied across the laminate structure until the resin permeates the fibrous material of each layered arrangement and fills perforations in each perforated metal sheet. The resin is cured thereby yielding a metal/composite hybrid laminate.Type: GrantFiled: July 31, 2006Date of Patent: September 29, 2009Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventors: Roberto J. Cano, Brian W. Grimsley, Erik S. Weiser, Brian J. Jensen
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Patent number: 7541388Abstract: A fully imidized, solvent-free polyimide foam having excellent mechanical, acoustic, thermal, and flame resistant properties is produced. A first solution is provided, which includes one or more aromatic dianhydrides or derivatives of aromatic dianhydrides, and may include one or more aromatic diamines, dissolved in one or more polar solvents, along with an effective amount of one or more blowing agents. This first solution may also advantageously include effective amounts respectively of one or mores catalysts, one or more surfactants, and one or more fire retardants. A second solution is also provided which includes one or more isocyanates. The first and second solutions are rapidly and thoroughly mixed to produce an admixture, which is allowed to foam—in an open container, or in a closed mold—under ambient conditions to completion produce a foamed product. This foamed product is then cured by high frequency electromagnetic radiation, thermal energy, or a combination thereof.Type: GrantFiled: May 5, 2005Date of Patent: June 2, 2009Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventors: Juan M. Vazquez, Roberto J. Cano, Brian J. Jensen, Erik S. Weiser
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Publication number: 20090118461Abstract: The benefits of liquid crystal polymers and polyetherimides are combined in an all-aromatic thermoplastic liquid crystalline polyetherimide. Because of the unique molecular structure, all-aromatic thermotropic liquid crystal polymers exhibit outstanding processing properties, excellent barrier properties, low solubilities and low coefficients of thermal expansion in the processing direction. These characteristics are combined with the strength, thermal, and radiation stability of polyetherimides.Type: ApplicationFiled: November 5, 2007Publication date: May 7, 2009Applicant: USA as represented by the Administrator of the National Aeronautics and Space AdministrationInventors: Erik S. Weiser, Theodorus J. Dingemans, Terry L. St. Clair, Jeffrey A. Hinkley
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Patent number: 7507784Abstract: Main chain thermotropic liquid crystal esters, ester-imides, and ester-amides were prepared from AA, BB, and AB type monomeric materials and end-capped with phenylacetylene, phenylmaleimide, or nadimide reactive end-groups. The end-capped liquid crystal oligomers are thermotropic and have, preferably, molecular weights in the range of approximately 1000-15,000 grams per mole. The end-capped liquid crystal oligomers have broad liquid crystalline melting ranges and exhibit high melt stability and very low melt viscosities at accessible temperatures. The end-capped liquid crystal oligomers are stable for up to an hour in the melt phase. They are highly processable by a variety of melt process shape forming and blending techniques. Once processed and shaped, the end-capped liquid crystal oligomers were heated to further polymerize and form liquid crystalline thermosets (LCT). The fully cured products are rubbers above their glass transition temperatures.Type: GrantFiled: April 29, 2005Date of Patent: March 24, 2009Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventors: Theodorus J. Dingemans, Erik S. Weiser, Terry L. St. Clair
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Publication number: 20090022975Abstract: A metal/fiber laminate has a plurality of adjacent layers. Each layer is porous and includes an arrangement of fibers. At least one of the layers has its fibers coated with a metal. A polymer matrix permeates each such arrangement.Type: ApplicationFiled: May 21, 2008Publication date: January 22, 2009Applicant: U.S.A. as represented by the administrator of the National Aeronautics and Space AdministrationInventors: Stephen J. Hales, Joel A. Alexa, Brian J. Jensen, Roberto J. Cano, Erik S. Weiser
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Publication number: 20080286473Abstract: Hydrophobic coating compositions containing siloxanes and fluoropolymer resin hinder the accumulation of moisture and reduce the adhesion of ice formed on the coating. Applications of such coating compositions to surfaces thus reduce the propensity for ice formation on a treated surface, and ease the dislodging of any ice formed on the treated surface.Type: ApplicationFiled: May 18, 2007Publication date: November 20, 2008Applicants: and space Ad+Inventors: Trent M. Smith, Erik S. Weiser, Roberto J. Cano, Michael E. Prince, Leslie A. Curtis, Charles D. DeWeese
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Patent number: 6956066Abstract: A fully imidized, solvent-free polyimide foam having excellent mechanical, acoustic, thermal, and flame resistant properties is produced. A first solution is provided, which includes one or more aromatic dianhydrides or derivatives of aromatic dianhydrides, and may include one or more aromatic diamines, dissolved in one or more polar solvents, along with an effective amount of one or more blowing agents. This first solution may also advantageously include effective amounts respectively of one or mores catalysts, one or more surfactants, and one or more fire retardants. A second solution is also provided which includes one or more isocyanates. The first and second solutions are rapidly and thoroughly mixed to produce an admixture, which is allowed to foam—in an open container, or in a closed mold—under ambient conditions to completion produce a foamed product. This foamed product is then cured by high frequency electromagnetic radiation, thermal energy, or a combination thereof.Type: GrantFiled: February 11, 2004Date of Patent: October 18, 2005Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventors: Juan M. Vazquez, Roberto J. Cano, Brian J. Jensen, Erik S. Weiser
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Patent number: 6939940Abstract: Main chain thermotropic liquid crystal esters, ester-imides, and ester-amides were prepared from AA, BB, and AB type monomeric materials and were end-capped with phenylacetylene, phenylmaleimide, or nadimide reactive end-groups. The resulting reactive end-capped liquid crystal oligomers exhibit a variety of improved and preferred physical properties. The end-capped liquid crystal oligomers are thermotropic and have, preferably, molecular weights in the range of approximately 1000-15,000 grams per mole. The end-capped liquid crystal oligomers have broad liquid crystalline melting ranges and exhibit high melt stability and very low melt viscosities at accessible temperatures. The end-capped liquid crystal oligomers are stable for up to an hour in the melt phase.Type: GrantFiled: January 5, 2001Date of Patent: September 6, 2005Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventors: Theodorous J. Dingemans, Erik S. Weiser, Terry L. St. Clair
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Publication number: 20040249002Abstract: A fully imidized, solvent-free polyimide foam having excellent mechanical, acoustic, thermal, and flame resistant properties is produced. A first solution is provided, which includes one or more aromatic dianhydrides or derivatives of aromatic dianhydrides, and may include one or more aromatic diamines, dissolved in one or more polar solvents, along with an effective amount of one or more blowing agents. This first solution may also advantageously include effective amounts respectively of one or mores catalysts, one or more surfactants, and one or more fire retardants. A second solution is also provided which includes one or more isocyanates. The first and second solutions are rapidly and thoroughly mixed to produce an admixture, which is allowed to foam—in an open container, or in a closed mold—under ambient conditions to completion produce a foamed product. This foamed product is then cured by high frequency electromagnetic radiation, thermal energy, or a combination thereof.Type: ApplicationFiled: February 11, 2004Publication date: December 9, 2004Applicant: Administrator of the National Aeronautics and Space AdministrationInventors: Juan M. Vazquez, Roberto J. Cano, Brian J. Jensen, Erik S. Weiser
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Publication number: 20020132933Abstract: Main chain thermotropic liquid crystal esters, ester-imides, and ester-amides were prepared from AA, BB, and AB type monomeric materials and were end-capped with phenylacetylene, phenylmaleimide, or nadimide reactive end-groups. The resulting reactive end-capped liquid crystal oligomers exhibit a variety of improved and preferred physical properties. The end-capped liquid crystal oligomers are thermotropic and have, preferably, molecular weights in the range of approximately 1000-15,000 grams per mole. The end-capped liquid crystal oligomers have broad liquid crystalline melting ranges and exhibit high melt stability and very low melt viscosities at accessible temperatures. The end-capped liquid crystal oligomers are stable for up to an hour in the melt phase.Type: ApplicationFiled: January 5, 2001Publication date: September 19, 2002Inventors: Theodorous J. Dingemans, Erik S. Weiser, Terry L. St. Clair
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Patent number: 6235803Abstract: A shaped article composed of an aromatic polyimide has a hollow, essentially spherical structure and a particle size of about 100 to about 1500 &mgr;m, a density of about 1 to about 6 pounds/ft3 and a volume change of 1 to about 20% by a pressure treatment of 30 psi for 10 minutes at room temperature. A syntactic foam, made of a multiplicity of the shaped articles which are bonded together by a matrix resin to form an integral composite structure, has a density of about 3 to about 30 pounds/ft3 and a compression strength of about 100 to about 1400 pounds/in2.Type: GrantFiled: September 9, 1999Date of Patent: May 22, 2001Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventors: Erik S. Weiser, Terry L. St. Clair, Yoshiaki Echigo, Hisayasu Kaneshiro
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Patent number: 6222007Abstract: High quality films, preimpregnated tape (prepegs) and composites have been fabricated from polyimide precursor “salt-like” solutions. These “salt-like” solutions have a low viscosity (5,000 to 10,000 cp) and a high solids content (50-65% by weight) and can be coated onto reinforcing fiber to produce prepegs with excellent tack and drape at 12-15% residual solvent (˜4-6% water from thermal imidization reaction). The processing of these types of prepegs significantly overcomes solvent removal problems and allows excellent fiber wet out. In addition, the physical characteristics of the polyimide precursor “salt-like” solutions permits processing into high-performance materials through the use of standard prepregging and composite fabrication equipment. The resultant composites are of high quality.Type: GrantFiled: May 29, 1998Date of Patent: April 24, 2001Assignee: The United States of America as represented by the National Aeronautics and Space AdministrationInventors: Roberto J. Cano, Erik S. Weiser, Terry L. St. Clair, Yoshiaki Echigo, Hisayasu Kaneshiro
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Patent number: 6180746Abstract: A polyimide precursor solid residuum is an admixture of an aromatic dianhydride or derivative thereof and an aromatic diamine or dervative thereof plus a complexing agent, which is complexed with the admixture by hydrogen bonding. The polyimide precursor solid residuum is effectively employed in the preparation of polyimide foam and the fabrication of polyimide foam structures.Type: GrantFiled: May 21, 1999Date of Patent: January 30, 2001Assignees: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration, Unitika, LTDInventors: Erik S. Weiser, Terry L. St. Clair, Yoshiaki Echigo, Hisayasu Kaneshiro