Patents by Inventor David F. Kronholm
David F. Kronholm 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: 10239839Abstract: The present invention relates to compositions and methods of using free radical scavengers with reduced 1O2 generation. In certain embodiments, these compositions and methods of use relate to fullerene-derived ketolactams and fullerene-derived ketolactam derivatives, fullerene derivatives, and/or fullerenes. In yet other embodiments, the invention relates to cosmetic or dermatological compositions comprising said free radical scavengers with reduced 1O2 generation.Type: GrantFiled: October 25, 2016Date of Patent: March 26, 2019Assignee: Solenne BVInventors: David F. Kronholm, Alexander B. Sieval, Jan C. Hummelen
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Publication number: 20170037012Abstract: The present invention relates to compositions and methods of using free radical scavengers with reduced 1O2 generation. In certain embodiments, these compositions and methods of use relate to fullerene-derived ketolactams and fullerene-derived ketolactam derivatives, fullerene derivatives, and/or fullerenes. In yet other embodiments, the invention relates to cosmetic or dermatological compositions comprising said free radical scavengers with reduced 1O2 generation.Type: ApplicationFiled: October 25, 2016Publication date: February 9, 2017Inventors: David F. Kronholm, Alexander B. Sieval, Jan C. Hummelen
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Patent number: 9475810Abstract: The present invention relates to compositions and methods of using free radical scavengers with reduced 1O2 generation. In certain embodiments, these compositions and methods of use relate to fullerene-derived ketolactams and fullerene-derived ketolactam derivatives, fullerene derivatives, and/or fullerenes. In yet other embodiments, the invention relates to cosmetic or dermatological compositions comprising said free radical scavengers with reduced 1O2 generation.Type: GrantFiled: November 11, 2013Date of Patent: October 25, 2016Assignee: Solenne BVInventors: David F. Kronholm, Alexander B. Sieval, Jan C. Hummelen
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Patent number: 8945807Abstract: Disclosed are compositions of mixed fullerene derivatives with utility in organic semiconductors, and methods of making and using such compositions. In certain embodiments, the present invention relates to compositions of mixed fullerene derivatives further comprising one or more additional fullerene-based components within specified ranges. In certain other embodiments, the invention relates to methods of producing mixed fullerene derivatives of a specific composition from mixed fullerene starting materials, or pure fullerene derivatives of a specific composition from mixed fullerene derivatives. In yet other embodiments, the invention relates to semiconductors and devices comprising a composition of the invention.Type: GrantFiled: May 6, 2013Date of Patent: February 3, 2015Assignee: Solenne BVInventors: David F. Kronholm, Jan C. Hummelen, Alexander B. Sieval, Patrick Van't Hof
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Publication number: 20140080853Abstract: The present invention relates to compositions and methods of using free radical scavengers with reduced 1O2 generation. In certain embodiments, these compositions and methods of use relate to fullerene-derived ketolactams and fullerene-derived ketolactam derivatives, fullerene derivatives, and/or fullerenes. In yet other embodiments, the invention relates to cosmetic or dermatological compositions comprising said free radical scavengers with reduced 1O2 generation.Type: ApplicationFiled: November 11, 2013Publication date: March 20, 2014Applicant: Solenne BVInventors: David F. Kronholm, Alexander B. Sieval, Jan C. Hummelen
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Patent number: 8580810Abstract: The present invention relates to compositions and methods of using free radical scavengers with reduced 1O2 generation. In certain embodiments, these compositions and methods of use relate to fullerene-derived ketolactams and fullerene-derived keto lactam derivatives, fullerene derivatives, and/or fullerenes. In yet other embodiments, the invention relates to cosmetic or dermatological compositions comprising said free radical scavengers with reduced 1O2 generation.Type: GrantFiled: November 29, 2007Date of Patent: November 12, 2013Assignee: Solenne BVInventors: David F. Kronholm, Alexander B. Sieval, Jan C. Hummelen
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Patent number: 8435713Abstract: Disclosed are compositions of mixed fullerene derivatives with utility in organic semiconductors, and methods of making and using such compositions. In certain embodiments, the present invention relates to compositions of mixed fullerene derivatives further comprising one or more additional fullerene-based components within specified ranges. In certain other embodiments, the invention relates to methods of producing mixed fullerene derivatives of a specific composition from mixed fullerene starting materials, or pure fullerene derivatives of a specific composition from mixed fullerene derivatives. In yet other embodiments, the invention relates to semiconductors and devices comprising a composition of the invention.Type: GrantFiled: August 26, 2011Date of Patent: May 7, 2013Assignee: Solenne BVInventors: David F. Kronholm, Jan C. Hummelen, Alexander B. Sieval, Patrick Van't Hof
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Publication number: 20120043507Abstract: Disclosed are compositions of mixed fullerene derivatives with utility in organic semiconductors, and methods of making and using such compositions. In certain embodiments, the present invention relates to compositions of mixed fullerene derivatives further comprising one or more additional fullerene-based components within specified ranges. In certain other embodiments, the invention relates to methods of producing mixed fullerene derivatives of a specific composition from mixed fullerene starting materials, or pure fullerene derivatives of a specific composition from mixed fullerene derivatives. In yet other embodiments, the invention relates to semiconductors and devices comprising a composition of the invention.Type: ApplicationFiled: August 26, 2011Publication date: February 23, 2012Applicant: Solenne BVInventors: DAVID F. KRONHOLM, Jan C. Hummelen, Alexander B. Sieval, Patrick Van't Hof
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Patent number: 8076050Abstract: Disclosed are compositions of mixed fullerene derivatives with utility in organic semiconductors, and methods of making and using such compositions. In certain embodiments, the present invention relates to compositions of mixed fullerene derivatives further comprising one or more additional fullerene-based components within specified ranges. In certain other embodiments, the invention relates to methods of producing mixed fullerene derivatives of a specific composition from mixed fullerene starting materials, or pure fullerene derivatives of a specific composition from mixed fullerene derivatives. In yet other embodiments, the invention relates to semiconductors and devices comprising a composition of the invention.Type: GrantFiled: July 6, 2007Date of Patent: December 13, 2011Assignee: Solenne BVInventors: David F. Kronholm, Jan C. Hummelen, Alexander B. Sieval, Patrick Van't Hof
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Publication number: 20110089380Abstract: One aspect of the invention relates to compositions comprising one or more fullerene derivatives that comprise one or more covalent addends. In certain embodiments, the fullerene derivatives are selected from the group consisting of methanofullerene derivatives, Prato adduct fullerene derivatives, Diels-Alder fullerene derivatives, diazoline fullerene derivatives, Bingel fullerene derivatives, ketolactam fullerene derivatives, and azafulleroid fullerene derivatives. In certain embodiments, the fullerenes are C60 or C70 or a mixture thereof. The invention also relates to semiconductors, photodiodes, solar cells, photodectectors, and transistors comprising one or more fullerene derivatives that comprise one or more covalent addends.Type: ApplicationFiled: September 22, 2008Publication date: April 21, 2011Inventors: Jan C. Hummelen, Floris Berend Kooistra, David F. Kronholm
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Patent number: 7833493Abstract: A mode of combustion and multi-component reactor to accomplish this mode of combustion are disclosed which produces fullerenes and fullerenic material by combustion. This mode consists of de-coupling an oxidation region of a flame from a post-flame region, thus giving greater control over operating parameters, such as equivalence ratio, temperature, and pressure; allows conditions of the operating parameters of the combustion reaction to be attained which would not be easily attained by conventional methods; and offers the ability to more easily stabilize the combustion reactions to allow for higher throughputs of fuel and oxidant. Several embodiments of a primary zone of a multi-component reactor are also disclosed. Said primary zone serves as the oxidation region, operates on the principle of providing recycle to the reacting combustion mixture, and which may be operated as approximately a well-mixed reactor.Type: GrantFiled: May 27, 2008Date of Patent: November 16, 2010Assignee: Nano-C, Inc.Inventors: Jack B. Howard, David F. Kronholm, Anthony J. Modestino, Henning Richter
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Patent number: 7833497Abstract: A method of processing fullerenes includes generating a gas stream having suspended soot particles and condensable gases, wherein the condensable gases comprising fullerenes, and separating at least a portion of the condensable gases from the suspended soot particles using a gas/solid separations process. At least a portion of the fullerenes in the condensable gases can be condensed and collected after separation of the condensable gases.Type: GrantFiled: September 8, 2008Date of Patent: November 16, 2010Assignee: Nano-C, LLC.Inventors: David F. Kronholm, Jack B. Howard
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Patent number: 7825161Abstract: Chemically functionalized fullerenes are useful in various applications as radical scavengers. These chemically functionalized fullerenes offer the advantages of preservation of the high innate radical scavenging efficiency of the fullerene cage and ease of synthesis of fullerene derivatives of desirably altered chemical and physical properties and single isomers. Further, they are based on a common intermediate chemistry and intermediates can be easily functionalized and tailored to various requirements.Type: GrantFiled: December 15, 2004Date of Patent: November 2, 2010Assignee: Nano-C, Inc.Inventors: David F. Kronholm, Jan C. Hummelen, Alexander B. Sieval
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Publication number: 20100249168Abstract: The present invention relates to compositions and methods of using free radical scavengers with reduced 1O2 generation. In certain embodiments, these compositions and methods of use relate to fullerene-derived ketolactams and fullerene-derived keto lactam derivatives, fullerene derivatives, and/or fullerenes. In yet other embodiments, the invention relates to cosmetic or dermatological compositions comprising said free radical scavengers with reduced 1O2 generation.Type: ApplicationFiled: November 29, 2007Publication date: September 30, 2010Applicant: Solenne BVInventors: David F. Kronholm, Alexander B. Sieval, Jan C. Hummelen
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Patent number: 7771692Abstract: A mode of combustion and multi-component reactor to accomplish this mode of combustion are disclosed which produces fullerenes and fullerenic material by combustion. This mode consists of de-coupling an oxidation region of a flame from a post-flame region, thus giving greater control over operating parameters, such as equivalence ratio, temperature, and pressure; allows conditions of the operating parameters of the combustion reaction to be attained which would not be easily attained by conventional methods; and offers the ability to more easily stabilize the combustion reactions to allow for higher throughputs of fuel and oxidant. Several embodiments of a primary zone of a multi-component reactor are also disclosed. Said primary zone serves as the oxidation region, operates on the principle of providing recycle to the reacting combustion mixture, and which may be operated as approximately a well-mixed reactor.Type: GrantFiled: August 1, 2008Date of Patent: August 10, 2010Assignee: Nano-C, Inc.Inventors: Jack B. Howard, David F. Kronholm, Anthony J. Modestino, Henning Richter
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Publication number: 20100127244Abstract: Disclosed are compositions of mixed fullerene derivatives with utility in organic semiconductors, and methods of making and using such compositions. In certain embodiments, the present invention relates to compositions of mixed fullerene derivatives further comprising one or more additional fullerene-based components within specified ranges. In certain other embodiments, the invention relates to methods of producing mixed fullerene derivatives of a specific composition from mixed fullerene starting materials, or pure fullerene derivatives of a specific composition from mixed fullerene derivatives. In yet other embodiments, the invention relates to semiconductors and devices comprising a composition of the invention.Type: ApplicationFiled: July 6, 2007Publication date: May 27, 2010Applicant: Solenne BVInventors: David F. Kronholm, Jan C. Hummelen, Alexander B. Sieval, Patrick Van't Hof
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Publication number: 20090004069Abstract: A method of processing fullerenes includes generating a gas stream having suspended soot particles and condensable gases, wherein the condensable gases comprising fullerenes, and separating at least a portion of the condensable gases from the suspended soot particles using a gas/solid separations process. At least a portion of the fullerenes in the condensable gases can be condensed and collected after separation of the condensable gases.Type: ApplicationFiled: September 8, 2008Publication date: January 1, 2009Applicant: NANO-C LLCInventors: David F. KRONHOLM, Jack B. HOWARD
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Publication number: 20080286190Abstract: A mode of combustion and multi-component reactor to accomplish this mode of combustion are disclosed which produces fullerenes and fullerenic material by combustion. This mode consists of de-coupling an oxidation region of a flame from a post-flame region, thus giving greater control over operating parameters, such as equivalence ratio, temperature, and pressure; allows conditions of the operating parameters of the combustion reaction to be attained which would not be easily attained by conventional methods; and offers the ability to more easily stabilize the combustion reactions to allow for higher throughputs of fuel and oxidant. Several embodiments of a primary zone of a multi-component reactor are also disclosed. Said primary zone serves as the oxidation region, operates on the principle of providing recycle to the reacting combustion mixture, and which may be operated as approximately a well-mixed reactor.Type: ApplicationFiled: August 1, 2008Publication date: November 20, 2008Inventors: Jack B. HOWARD, David F. KRONHOLM, Anthony J. MODESTINO, Henning RICHTER
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Publication number: 20080280240Abstract: A mode of combustion and multi-component reactor to accomplish this mode of combustion are disclosed which produces fullerenes and fullerenic material by combustion. This mode consists of de-coupling an oxidation region of a flame from a post-flame region, thus giving greater control over operating parameters, such as equivalence ratio, temperature, and pressure; allows conditions of the operating parameters of the combustion reaction to be attained which would not be easily attained by conventional methods; and offers the ability to more easily stabilize the combustion reactions to allow for higher throughputs of fuel and oxidant. Several embodiments of a primary zone of a multi-component reactor are also disclosed. Said primary zone serves as the oxidation region, operates on the principle of providing recycle to the reacting combustion mixture, and which may be operated as approximately a well-mixed reactor.Type: ApplicationFiled: May 27, 2008Publication date: November 13, 2008Applicant: NANO-C, INC.Inventors: Jack B. HOWARD, David F. KRONHOLM, Anthony J. MODESTINO, Henning RICHTER
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Patent number: 7435403Abstract: A method of processing fullerenes includes generating a gas stream having suspended soot particles and condensable gases, wherein the condensable gases comprise fullerenes, and separating at least a portion of the condensable gases from the suspended soot particles using a gas/solid separations process. At least a portion of the fullerenes in the condensable gases can be condensed and collected after separation of the condensable gases.Type: GrantFiled: July 3, 2003Date of Patent: October 14, 2008Assignee: Nano-C LLCInventors: David F. Kronholm, Jack B. Howard