Patents by Inventor David Leppard

David Leppard 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).

  • Publication number: 20190304581
    Abstract: This invention tracks and collects the data of the symptoms a person is experiencing as the symptoms happen, on a symptom logger, and are converted into a symptom score. The data is sent wirelessly to a tracker mobile app running on a user device when they are in range of each other. The tracker mobile app shows logged symptoms by date and time and tracks and collects the data of what may be triggering those symptoms (e.g., food, drink, medication, etc.). The tracker mobile app also keeps a daily journal of heath questions and sends reminders for medications to be taken. All the data is sent continually to the cloud. The data from the cloud is put into graphical reports for the medical professional and the patient. By correlating the data of symptoms and triggers, the medical professional can determine what is causing the patients symptoms and prescribe possible solutions.
    Type: Application
    Filed: April 3, 2019
    Publication date: October 3, 2019
    Inventors: Douglas James Leppard, Benjamin David Leppard
  • Publication number: 20080032078
    Abstract: The present invention relates to highly compatible hydroxyphenyltriazine UV-absorbers and to their use in protecting plants in green houses and the protection of foodstuffs, beverages, pharmaceuticals, cosmetics, personal care products, shampoos and the like from the deleterious effects of ultraviolet radiation. It has been found that certain highly compatible tris-aryl-s-triazines are especially effective towards this end when incorporated in the containers or films in which such materials are stored.
    Type: Application
    Filed: September 27, 2007
    Publication date: February 7, 2008
    Inventors: Dario Lazzari, David Leppard, Massimiliano Sala, Manuele Vitali, Graziano Zagnoni, Gianluca Ferri
  • Publication number: 20070259165
    Abstract: The novel transparent polyolefin, polyester or polyamide article disclosed is stabilized against the effects of light, oxygen, heat and aggressive chemicals by addition of 0.005-0.30% by weight the polymeric substrate of a hydroxyphenyl triazine UV absorber, and is characterized by its thickness between 1 and 500 ?m. Preferred polyolefin articles thus stabilized are agricultural films containing as further stabilizer a sterically hindered amine. The novel compositions act as selective UV filter especially useful in agriculture.
    Type: Application
    Filed: July 11, 2007
    Publication date: November 8, 2007
    Inventors: David Leppard, Francois Gugumus, Michela Bonora
  • Publication number: 20070161726
    Abstract: The present invention relates to highly compatible hydroxyphenyltriazine UV-absorbers and to their use in protecting plants in green houses and the protection of foodstuffs, beverages, pharmaceuticals, cosmetics, personal care products, shampoos and the like from the deleterious effects of ultraviolet radiation. It has been found that certain highly compatible tris-aryl-s-triazines are especially effective towards this end when incorporated in the containers or films in which such materials are stored.
    Type: Application
    Filed: September 22, 2006
    Publication date: July 12, 2007
    Inventors: Dario Lazzari, David Leppard, Massimiliano Sala, Manuele Vitali, Graziano Zagnoni, Gianluca Ferri
  • Publication number: 20060141207
    Abstract: The novel transparent polyolefin, polyester or polyamide article disclosed is stabilized against the effects of light, oxygen, heat and agressive chemicals by addition of 0.005-0.30% by weight the polymeric substrate of a hydroxyphenyl triazine UV absorber, and is characterized by its thickness between 1 and 500 ?m. Preferred polyolefin articles thus stabilized are agricultural films containing as further stabilizer a sterically hindered amine. The novel compositions act as selective UV filter especially useful in agriculture.
    Type: Application
    Filed: February 22, 2006
    Publication date: June 29, 2006
    Inventors: David Leppard, Francois Gugumus, Michela Bonora
  • Publication number: 20060128959
    Abstract: A description is given of processes for the preparation of mono- and bisacylphosphines and of mono- and bisacylphosphine oxides and mono- and bisacylphosphine sulfides, which comprises first reacting organic P-monohalogenophosphines or P,P-dihalogenophosphines, or mixtures thereof, with an alkali metal or magnesium in combination with lithium, where appropriate in the presence of a catalyst, and then carrying out the reaction with add halides and, in the case of the process for the preparation of oxides, carrying out an oxidation step and, in the case of the preparation of sulfides, reacting the phosphines so obtained with sulfur. It is characteristic, inter alia, that the processes are carried out without isolation of the intermediates.
    Type: Application
    Filed: February 6, 2006
    Publication date: June 15, 2006
    Inventors: David Leppard, Eugen Eichenberger, Rene Kaeser, Gebhard Hug, Urs Schwendimann
  • Publication number: 20060052491
    Abstract: A stabilizer composition comprising (A) a compound of the formula (I) wherein R is (CH2—CH2—O—)n, —R2; —CH2—CH(OH)—CH2—O—R2; or —CH(R3)—CO—O—R4; n is 0 or 1; R2 is C1-C13alkyl or C2C20alkenyl or C6-C12aryl or CO—C1-C18alkyl; R3 is H or C1-C8 alkyl; R4 is C1-C12alkyl or C2-C12alkenyl or C5C6cycloalkyl; and (B) one or more compounds selected from benzotriazoles of the formula (IIa), 2-hydroxybenzophenones of the formula (IIb), oxalanilides of the formula (IIc), 2-hydroxyphenyltriazines of formula (IId), cinnamates of formula (IIe), and benzoates of formula (IIf) as defined in claim 1, is especially effective towards stabilizing organic materials against degradation induced by light, heat or oxidation.
    Type: Application
    Filed: September 23, 2003
    Publication date: March 9, 2006
    Inventors: Adalbert Braig, David Leppard, Frederique Wendeborn
  • Publication number: 20050075465
    Abstract: Compounds of the general formula I? in which R1 is H, C1-C12alkyl; C5-C12cycloalkyl; C2-C18alkyl which is interrupted by one or more O; SR4; OR5; or is a group of formula II or III R2, R21 and R3 independently of one another, are H or —Y-T as defined in claim 1, where T is a reactive group selected from OH, acryl- and methacryloxy and arylcarbonate groups, and further symbols are as defined in claim 1, are effective as crosslinking agents for polymeric networks, especially as in flexographic printing plates, coatings, and plastic containers or films. Further provided is a method of protecting the content of a clear or lightly colored plastic container or film against the deleterious effects of ultraviolet radiation, which method comprises permanently and covalently bonding one or more UV absorbing moieties of a durable s-triazine UV absorber via condensation to a suitable polymer component.
    Type: Application
    Filed: November 21, 2002
    Publication date: April 7, 2005
    Inventors: Thomas Bolle, Andreas Valet, David Leppard, Stephen Andrews, Ramanathan Ravichandran, Markus Grob, Dirk Simon
  • Publication number: 20050059758
    Abstract: The novel transparent polyolefin, polyester or polyamide article disclosed is stabilized against the effects of light, oxygen, heat and agressive chemicals by addition of 0.005-0.30% by weight the polymeric substrate of a hydroxyphenyl triazine UV absorber, and is characterized by its thickness between 1 and 500 ?m. Preferred polyolefin articles thus stabilized are agricultural films containing as further stabilizer a sterically hindered amine. The novel compositions act as selective UV filter especially useful in agriculture.
    Type: Application
    Filed: July 20, 2004
    Publication date: March 17, 2005
    Inventors: David Leppard, Francois Gugumus, Michela Bonora
  • Patent number: 5240975
    Abstract: Liquid substituted 2H-benzotriazole mixtures are prepared by alkylation with concomitant dealkylation, fragmentation and realkylation of 2-(2-hydroxy-5-alkylphenyl)-2H-benzotriazoles or of 2-(2-hydroxy-3,5-dialkylphenyl)-2H-benzotriazoles with straight or branched alkenes of 8 to 30 carbon atoms in the presence of an acid catalyst at 100.degree.-200.degree. C. The liquid mixtures exhibit outstanding efficacy in protecting organic substrates from light induced deterioration as well as good resistance to loss by volatilization or exudation during the processing of stabilized compositions at elevated temperatures.
    Type: Grant
    Filed: December 4, 1991
    Date of Patent: August 31, 1993
    Assignee: Ciba-Geigy Corporation
    Inventors: Roland A. E. Winter, Robert E. Detlefsen, Werner Stegmann, Reto Luisoli, David Leppard
  • Patent number: 5095062
    Abstract: Liquid substituted, 2H-benzotriazole mixtures are prepared by alkylation with concomitant dealkylation, fragmentation and realkylation of 2-(2-hydroxy-5-alkylphenyl)-2H-benzotriazoles or of 2-(2-hydroxy-3,5-dialkylphenyl)-2H-benzotriazoles with straight or branched alkenes of 8 to 30 carbon atoms in the presence of an acid catalyst at 100.degree.-200.degree. C. The liquid mixtures exhibit outstanding efficacy in protecting organic substrates from light induced deterioration as well as good resistance to loss by volatilization or exudation during the processing of stabilized compositions at elevated temperatures.
    Type: Grant
    Filed: September 5, 1990
    Date of Patent: March 10, 1992
    Assignee: Ciba-Geigy Corporation
    Inventors: Roland A. E. Winter, Robert E. Detiefsen, Werner Stegmann, Reto Luisoli, David Leppard
  • Patent number: 4973701
    Abstract: Liquid substituted 2H-benzotriazole mixtures are prepared by alkylation with concomitant dealkylation, fragmentation and realkylation of 2-(2-hydroxy-5-alkylphenyl)-2H-benzotriazoles or of 2-(2-hydroxy-3,5-dialkylphenyl)-2H-benzotriazoles with straight or branched alkenes of 8 to 30 carbon atoms in the presence of an acid catalyst at 100.degree.-200.degree. C. The liquid mixtures exhibit outstanding efficacy in protecting organic substrates from light induced deterioration as well as good resistance to loss by volatilization or exudation during the processing of stabilized compositions at elevated temperatures.
    Type: Grant
    Filed: April 11, 1988
    Date of Patent: November 27, 1990
    Assignee: Ciba-Geigy Corporation
    Inventors: Roland A. E. Winter, Werner Stegmann, Reto Luisoli, David Leppard, Roland A. E. Winter, Robert E. Detlefsen