Patents by Inventor Yann Schrodi

Yann Schrodi 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: 20070282148
    Abstract: The invention relates to ruthenium alkylidene complexes having an N-heterocyclic carbene ligand comprising a 5-membered heterocyclic ring having a carbenic carbon atom and at least one nitrogen atom contained within the 5-membered heterocyclic ring, wherein the nitrogen atom is directly attached to the carbenic carbon atom and is substituted by a phenyl ring, and wherein the phenyl ring has a hydrogen at either or both ortho positions and is substituted at at least one ortho or meta position. The invention also relates to an olefin metathesis reactions and particularly to the preparation of tetra-substituted cyclic olefins via a ring-closing metathesis.
    Type: Application
    Filed: December 18, 2006
    Publication date: December 6, 2007
    Inventors: Jacob Berlin, Robert Grubbs, Yann Schrodi, Ian Stewart
  • Publication number: 20070227400
    Abstract: The invention provides surface coating compositions comprising a preservative comprising 9-decenoic acid, salts of 9-decenoic acid, esters of 9-decenoic acid, or combinations thereof. The surface coating compositions may be water-based coatings (e.g., a latex paint) or solvent-based coatings (e.g., a solvent-based paint). The surface coating compositions may be paints, stains, varnishes, concrete coatings, anti-graffiti coatings, and the like. Methods for protecting a surface coating composition from in-can spoilage and protecting a coating of the surface coating composition from deterioration by the action of microorganisms are also described.
    Type: Application
    Filed: February 9, 2007
    Publication date: October 4, 2007
    Inventors: Jill Zullo, James Anderson, Hiroki Kaido, Richard Pederson, Yann Schrodi, William Sperber, Michael Tupy, Earl Wagener
  • Patent number: 7268242
    Abstract: Chelating ligand precursors for the preparation of olefin metathesis catalysts are disclosed. The resulting catalysts are air stable monomeric species capable of promoting various metathesis reactions efficiently, which can be recovered from the reaction mixture and reused. Internal olefin compounds, specifically beta-substituted styrenes, are used as ligand precursors. Compared to terminal olefin compounds such as unsubstituted styrenes, the beta-substituted styrenes are easier and less costly to prepare, and more stable since they are less prone to spontaneous polymerization. Methods of preparing chelating-carbene metathesis catalysts without the use of CuCl are disclosed. This eliminates the need for CuCl by replacing it with organic acids, mineral acids, mild oxidants or even water, resulting in high yields of Hoveyda-type metathesis catalysts.
    Type: Grant
    Filed: January 31, 2006
    Date of Patent: September 11, 2007
    Assignee: Materia, Inc.
    Inventors: Richard L. Pederson, Jason K. Woertink, Christopher M. Haar, David E. Gindelberger, Yann Schrodi
  • Publication number: 20060122412
    Abstract: Chelating ligand precursors for the preparation of olefin metathesis catalysts are disclosed. The resulting catalysts are air stable monomeric species capable of promoting various metathesis reactions efficiently, which can be recovered from the reaction mixture and reused. Internal olefin compounds, specifically beta-substituted styrenes, are used as ligand precursors. Compared to terminal olefin compounds such as unsubstituted styrenes, the beta-substituted styrenes are easier and less costly to prepare, and more stable since they are less prone to spontaneous polymerization. Methods of preparing chelating-carbene metathesis catalysts without the use of CuCl are disclosed. This eliminates the need for CuCl by replacing it with organic acids, mineral acids, mild oxidants or even water, resulting in high yields of Hoveyda-type metathesis catalysts.
    Type: Application
    Filed: January 31, 2006
    Publication date: June 8, 2006
    Applicant: Materia, Inc.
    Inventors: Richard Pederson, Jason Woertink, Christopher Haar, David Gindelberger, Yann Schrodi
  • Patent number: 7026495
    Abstract: Chelating ligand precursors for the preparation of olefin metathesis catalysts are disclosed. The resulting catalysts are air stable monomeric species capable of promoting various metathesis reactions efficiently, which can be recovered from the reaction mixture and reused. Internal olefin compounds, specifically beta-substituted styrenes, are used as ligand precursors. Compared to terminal olefin compounds such as unsubstituted styrenes, the beta-substituted styrenes are easier and less costly to prepare, and more stable since they are less prone to spontaneous polymerization. Methods of preparing chelating-carbene metathesis catalysts without the use of CuCl are disclosed. This eliminates the need for CuCl by replacing it with organic acids, mineral acids, mild oxidants or even water, resulting in high yields of Hoveyda-type metathesis catalysts.
    Type: Grant
    Filed: September 16, 2003
    Date of Patent: April 11, 2006
    Assignee: Materia, Inc.
    Inventors: Richard L. Pederson, Jason K. Woertink, Christopher M. Haar, David E. Gindelberger, Yann Schrodi
  • Publication number: 20050261451
    Abstract: The invention provides novel organometallic complexes useful as olefin metathesis catalysts. The complexes have an N-heterocyclic carbene ligand and a chelating carbene ligand associated with a Group 8 transition metal center. The molecular structure of the complexes can be altered so as to provide a substantial latency period. The complexes are particularly useful in catalyzing ring closing metathesis of acyclic olefins and ring opening metathesis polymerization of cyclic olefins.
    Type: Application
    Filed: March 29, 2005
    Publication date: November 24, 2005
    Applicant: California Institute of Technology
    Inventors: Thay Ung, Yann Schrodi, Mark Trimmer, Andrew Hejl, Daniel Sanders, Robert Grubbs
  • Patent number: 6620955
    Abstract: Chelating ligand precursors for the preparation of olefin metathesis catalysts are disclosed. The resulting catalysts are air stable monomeric species capable of promoting various metathesis reactions efficiently, which can be recovered from the reaction mixture and reused. Internal olefin compounds, specifically beta-substituted styrenes, are used as ligand precursors. Compared to terminal olefin compounds such as unsubstituted styrenes, the beta-substituted styrenes are easier and less costly to prepare, and more stable since they are less prone to spontaneous polymerization. Methods of preparing chelating-carbene metathesis catalysts without the use of CuCl are disclosed. This eliminates the need for CuCl by replacing it with organic acids, mineral acids, mild oxidants or even water, resulting in high yields of Hoveyda-type metathesis catalysts.
    Type: Grant
    Filed: November 15, 2002
    Date of Patent: September 16, 2003
    Inventors: Richard L. Pederson, Jason K. Woertink, Christopher M. Haar, David E. Gindelberger, Yann Schrodi
  • Publication number: 20030166955
    Abstract: Chelating ligand precursors for the preparation of olefin metathesis catalysts are disclosed. The resulting catalysts are air stable monomeric species capable of promoting various metathesis reactions efficiently, which can be recovered from the reaction mixture and reused. Internal olefin compounds, specifically beta-substituted styrenes, are used as ligand precursors. Compared to terminal olefin compounds such as unsubstituted styrenes, the beta-substituted styrenes are easier and less costly to prepare, and more stable since they are less prone to spontaneous polymerization. Methods of preparing chelating-carbene metathesis catalysts without the use of CuCl are disclosed. This eliminates the need for CuCl by replacing it with organic acids, mineral acids, mild oxidants or even water, resulting in high yields of Hoveyda-type metathesis catalysts.
    Type: Application
    Filed: November 15, 2002
    Publication date: September 4, 2003
    Inventors: Richard L. Pederson, Jason K. Woertink, Christopher M. Haar, David E. Gindelberger, Yann Schrodi