Patents by Inventor Yuan K. Liu

Yuan K. Liu 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).

  • Patent number: 4879127
    Abstract: A process for storing produce for extended periods of time prior to further processing by canning or the like, which comprises the steps of immersing the produce in a substantially isotonic aqueous storage solution, wherein the solutes content of the storage solution is adjusted such that the osmotic pressures of the produce and the storage solution are substantially equal. The storage solution preferably comprises an edible sugar, an edible organic acid, and an edible oxygen scavenger. The produce is than stored in the solution at a temperature below about 40.degree. F. and subsequently canned and sterilized.
    Type: Grant
    Filed: November 1, 1988
    Date of Patent: November 7, 1989
    Assignee: Del Monte Corporation
    Inventors: Yuan K. Liu, Philip A. Kuhmichel, Fred G. Cordes, Wayman Wong
  • Patent number: 4710388
    Abstract: The crowns of mature pineapples ready for harvest are treated with an aqueous medium containing sufficient amounts of a gibberellin to retard withering and senescense of the crowns. The medium is preferably applied to the crowns soon after the pineapples have been harvested. The pineapples treated in accordance with this invention retain a freshly harvested appearance for an extended period of time and make them ideally suited for sale in the fresh fruit market.
    Type: Grant
    Filed: July 25, 1986
    Date of Patent: December 1, 1987
    Assignee: Del Monte Corporation
    Inventor: Yuan K. Liu
  • Patent number: 4614659
    Abstract: The crowns of mature pineapples ready for harvest are treated with an aqueous medium containing sufficient amounts of a gibberellin to retard withering and senescense of the crowns. The medium is preferably applied to the crowns soon after the pineapples have been harvested. The pineapples treated in accordance with this invention retain a freshly harvested appearance for an extended period of time and make them ideally suited for sale in the fresh fruit market.
    Type: Grant
    Filed: April 1, 1985
    Date of Patent: September 30, 1986
    Assignee: Del Monte Corporation
    Inventor: Yuan K. Liu