Patents by Inventor Richard A. Silva

Richard A. Silva 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: 20020119909
    Abstract: The present invention includes a process for enantioselective preparation of a non-racemic compound, which is either usable as a fragrance or flavor component or is convertible to a fragrance or flavor component by one or more additional reaction steps. The process includes the step of contacting either a substrate capable of forming a non-racemic compound by an enantioselective reaction and a co-reactant in the presence of a non-racemic catalyst, or a non-racemic or enantiopure substrate and a co-reactant, optionally in the presence of a racemic or non-racemic catalyst. The contacting is carried out at a temperature and length of time that is sufficient to produce the non-racemic compound with high optical purity. The process is used in stereoselective preparation of enantiomerically enriched intermediates useful in the preparation of non-racemic, chiral flavor and fragrance components.
    Type: Application
    Filed: January 17, 2002
    Publication date: August 29, 2002
    Applicant: Rhodia ChiRex, Inc.
    Inventors: Roger B. Pettman, Richard A. Silva, Jay Francis Larrow, Isabelle Storet
  • Patent number: 5021254
    Abstract: Garlic cloves to have their outer inedible skins removed are placed on a shake table which spreads them generally into a one-clove layer and moves them toward an exit edge. The cloves drop from shake table onto a sloped feed tray having a number of downwardly extending parallel troughs. Underneath each trough is a tube having a flexible cylinder secured to its lower end which receives cloves from its associated trough. A continuous belt driven along a path to present an upper surface has a number of openings within each of which an open-topped product cup is secured. The flexible cylinder contacts the belt surface and is closed off between product cups and released to feed cloves into the cups upon alignment therewith. A plate is spaced just above the belt and has openings through which nozzles extend to provide a timed blast of pressurized air into the cups for peeling the cloves. The outer skins are removed from the space above the belt by a suction fan.
    Type: Grant
    Filed: June 4, 1990
    Date of Patent: June 4, 1991
    Assignee: Dalgety Produce, Inc.
    Inventors: Rich Fischer, Richard Silva, Henry P. Welton
  • Patent number: 4998465
    Abstract: Garlic cloves to have their outer inedible skins removed are placed on a shake table which spreads them generally into a one-clove layer and moves them toward an exit edge. The cloves drop from shake table onto a sloped feed tray having a number of downwardly extending parallel troughs. Underneath each trough is a tube having a flexible cylinder secured to its lower end which receives cloves from its associated trough. A continuous belt driven along a path to present an upper surface has a number of openings within each of which an open-topped product cup is secured. The flexible cylinder contacts the belt surface and is closed off between product cups and released to feed cloves into the cups upon alignment therewith. A plate is spaced just above the belt and has openings through which nozzles extend to provide a timed blast of pressurized air into the cups for peeling the cloves. The outer skins are removed from the space above the belt by a suction fan.
    Type: Grant
    Filed: August 23, 1990
    Date of Patent: March 12, 1991
    Assignee: Dalgety Produce, Inc.
    Inventors: Rich Fischer, Richard Silva, Henry P. Welton