Patents by Inventor Chad L. Staiger
Chad L. Staiger 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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Publication number: 20240034837Abstract: Linear polymers and copolymers having tunable coefficients of thermal expansion can be derived from dibenzocyclooctene-based monomers. The dibenzocyclooctene-based monomer can comprise a dibenzocyclooctene or a heterocyclic derivative of dibenzocyclooctene. For example, the linear polymer can comprise a polymer or copolymer of a dibenzocyclooctene-based moiety and a polyester, polyamide, polyimide, polyurethane, or epoxy.Type: ApplicationFiled: January 26, 2023Publication date: February 1, 2024Inventors: Jeffrey C. Foster, Erica M. Redline, Chad L. Staiger, Koushik Ghosh, Eric M. Nagel
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Patent number: 11873301Abstract: Curatives and their resulting thermosets and other crosslinked polymers can reduce thermal expansion mismatch between an encapsulant and objects that are encapsulated. This can be accomplished by incorporating a negative CTE moiety into the thermoset resin or polymer backbone. The negative CTE moiety can be a thermal contractile unit that shrinks as a result of thermally induced conversion from a twist-boat to chair or cis/trans isomerization upon heating. Beyond CTE matching, other potential uses for these crosslinked polymers and thermosets include passive energy generation, energy absorption at high strain rates, mechanophores, actuators, and piezoelectric applications.Type: GrantFiled: March 20, 2023Date of Patent: January 16, 2024Assignee: National Technology & Engineering Solutions of Sandia, LLCInventors: Erica M. Redline, Chad L. Staiger, David R. Wheeler, Leah N. Appelhans, Jeffrey C. Foster
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Publication number: 20230250099Abstract: Curatives and their resulting thermosets and other crosslinked polymers can reduce thermal expansion mismatch between an encapsulant and objects that are encapsulated. This can be accomplished by incorporating a negative CTE moiety into the thermoset resin or polymer backbone. The negative CTE moiety can be a thermal contractile unit that shrinks as a result of thermally induced conversion from a twist-boat to chair or cis/trans isomerization upon heating. Beyond CTE matching, other potential uses for these crosslinked polymers and thermosets include passive energy generation, energy absorption at high strain rates, mechanophores, actuators, and piezoelectric applications.Type: ApplicationFiled: March 20, 2023Publication date: August 10, 2023Inventors: Erica M. Redline, Chad L. Staiger, David R. Wheeler, Leah N. Appelhans, Jeffrey C. Foster
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Patent number: 7875101Abstract: A portable, non-cryogenic, oxygen generation system capable of delivering oxygen gas at purities greater than 98% and flow rates of 15 L/min or more is described. The system consists of two major components. The first component is a high efficiency membrane capable of separating argon and a portion of the nitrogen content from air, yielding an oxygen-enriched permeate flow. This is then fed to the second component, a pressure swing adsorption (PSA) unit utilizing a commercially available, but specifically formulated zeolite compound to remove the remainder of the nitrogen from the flow. The system is a unique gas separation system that can operate at ambient temperatures, for producing high purity oxygen for various applications (medical, refining, chemical production, enhanced combustion, fuel cells, etc . . . ) and represents a significant advance compared to current technologies.Type: GrantFiled: November 12, 2008Date of Patent: January 25, 2011Assignee: Sandia CorporationInventors: Chad L. Staiger, Mark R. Vaughn, A. Keith Miller, Christopher J. Cornelius
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Publication number: 20100116132Abstract: A portable, non-cryogenic, oxygen generation system capable of delivering oxygen gas at purities greater than 98% and flow rates of 15 L/min or more is described. The system consists of two major components. The first component is a high efficiency membrane capable of separating argon and a portion of the nitrogen content from air, yielding an oxygen-enriched permeate flow. This is then fed to the second component, a pressure swing adsorption (PSA) unit utilizing a commercially available, but specifically formulated zeolite compound to remove the remainder of the nitrogen from the flow. The system is a unique gas separation system that can operate at ambient temperatures, for producing high purity oxygen for various applications (medical, refining, chemical production, enhanced combustion, fuel cells, etc . . . ) and represents a significant advance compared to current technologies.Type: ApplicationFiled: November 12, 2008Publication date: May 13, 2010Inventors: Chad L. Staiger, Mark R. Vaughn, A. Keith Miller, Christopher J. Cornelius
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Patent number: 7622596Abstract: Two new surfactant molecules are reported which contain thermally labile Diels-Alder adducts connecting the polar and non-polar sections of each molecule. The two surfactants possess identical non-polar dodecyl tail segments but exhibit different polar headgroups. The surfactants become soluble in water when anionic salts are formed through the deprotonation of the surfactant headgroups by the addition of potassium hydroxide. When either surfactant is exposed to temperature above about 60° C., the retro Diels-Alder reaction occurs, yielding hydrophilic and hydrophobic fragments or the aqueous solutions of the surfactants subsequently exhibit loss of all surface-active behavior.Type: GrantFiled: March 29, 2006Date of Patent: November 24, 2009Assignee: Sandia CorporationInventors: James R. McElhanon, Blake A. Simmons, Thomas Zifer, Gregory M. Jamison, Douglas A. Loy, Kamyar Rahimian, Timothy M. Long, David R. Wheeler, Chad L. Staiger
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Patent number: 7595349Abstract: Two new surfactant molecules are reported which contain thermally labile Diels-Alder adducts connecting the polar and non-polar sections of each molecule. The two surfactants possess identical non-polar dodecyl tail segments but exhibit different polar headgroups. The surfactants become soluble in water when anionic salts are formed through the deprotonation of the surfactant headgroups by the addition of potassium hydroxide. When either surfactant is exposed to temperature above about 60° C., the retro Diels-Alder reaction occurs, yielding hydrophilic and hydrophobic fragments or the aqueous solutions of the surfactants subsequently exhibit loss of all surface-active behavior.Type: GrantFiled: January 26, 2006Date of Patent: September 29, 2009Assignee: Sandia CorporationInventors: James R. McElhanon, Blake A. Simmons, Thomas Zifer, Gregory M. Jamison, Douglas A. Loy, Kamyar Rahimian, Timothy M. Long, David R. Wheeler, Chad L. Staiger
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Patent number: 7378533Abstract: The present invention describes surfactants of formula (I), wherein R, RN, and m are defined herein, processes for their preparation, and methods for their decomposition.Type: GrantFiled: March 22, 2006Date of Patent: May 27, 2008Assignee: Sandia CorporationInventors: James R. McElhanon, Gregory M. Jamison, Timothy M. Long, Douglas A. Loy, Kamyar Rahimian, Blake A. Simmons, Chad L. Staiger, David R. Wheeler, Thomas Zifer
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Patent number: 7358221Abstract: A class of surfactant molecules whose structure includes regularly spaced unsaturation in the tail group and thus, can be readily decomposed by ring-closing metathesis, and particularly by the action of a transition metal catalyst, to form small molecule products. These small molecules are designed to have increased volatility and/or enhanced solubility as compared to the original surfactant molecule and are thus easily removed by solvent extraction or vacuum extraction at low temperature. By producing easily removable decomposition products, the surfactant molecules become particularly desirable as template structures for preparing meso- and microstructural materials with tailored properties.Type: GrantFiled: June 26, 2006Date of Patent: April 15, 2008Assignee: Sandia CorporationInventors: Gregory M. Jamison, David R. Wheeler, Douglas A. Loy, Blake A. Simmons, Timothy M. Long, James R. McElhanon, Kamyar Rahimian, Chad L. Staiger
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Patent number: 7351837Abstract: The present invention describes surfactants of formula (I), wherein R, RN, and m are defined herein, processes for their preparation, and methods for their decomposition.Type: GrantFiled: March 22, 2006Date of Patent: April 1, 2008Assignee: Sandia CorporationInventors: James R. McElhanon, Gregory M. Jamison, Timothy M. Long, Douglas A. Loy, Kamyar Rahimian, Blake A. Simmons, Chad L. Staiger, David R. Wheeler, Thomas Zifer
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Patent number: 7022861Abstract: Two new surfactant molecules are reported which contain thermally labile Diels-Alder adducts connecting the polar and non-polar sections of each molecule. The two surfactants possess identical non-polar dodecyl tail segments but exhibit different polar headgroups. The surfactants become soluble in water when anionic salts are formed through the deprotonation of the surfactant headgroups by the addition of potassium hydroxide. When either surfactant is exposed to temperature above about 60° C., the retro Diels-Alder reaction occurs, yielding hydrophilic and hydrophobic fragments and the aqueous solutions of the surfactants subsequently exhibit loss of all surface-active behavior.Type: GrantFiled: June 10, 2004Date of Patent: April 4, 2006Assignee: Sandia National LaboratoriesInventors: James R. McElhanon, Blake A. Simmons, Thomas Zifer, Gregory M. Jamison, Douglas A. Loy, Kamyar Rahimian, Timothy M. Long, David R. Wheeler, Chad L. Staiger