Patents by Inventor Mingchih Michael Tseng

Mingchih Michael Tseng 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: 6298558
    Abstract: This relates to an improved skin engaging member for use in razor blade; cartridge assemblies and shaving systems of the wet shave type. In an embodiment, there is provided a two-component, control-release shaving device consisting of(a) a sheath layer made from thermoplastic resins with openings therein and (b) a core region containing internal shaving aids. Potentially, the device can maintain surface appearance, control-release the shaving aids, minimize the degradation of the shaving aids, and prevent the shaving aids from being trapping in a strip. Furthermore, the addition of low-melt additives to the shaving aids becomes feasible and the compatibility between the shaving aids and the shaving aid carrier such as polystyrene in the lubricating strip composite becomes less critical.
    Type: Grant
    Filed: June 30, 1995
    Date of Patent: October 9, 2001
    Assignee: The Gillette Company
    Inventors: Mingchih Michael Tseng, Yuling Yin, Frank E. Badin, Thilivali T. Ndou, Brian A. Rogers, Lee K. Lim
  • Patent number: 6029678
    Abstract: Monofilament gel dental flosses and methods for their fabrication are provided. The gel flosses comprise a core material in combination with a gel material, where both the core and gel materials comprise thermoplastic elastomeric polymers and are sufficiently adherent to one another so as not to separate under conditions of hygienic use.
    Type: Grant
    Filed: January 21, 1998
    Date of Patent: February 29, 2000
    Assignee: Gillette Canada Inc.
    Inventors: Belinda Tsao, Edward Hosung Park, Paul Zwick, Pranav Desai, Mingchih Michael Tseng, Casper W. Chiang
  • Patent number: 5915791
    Abstract: A shaving system that includes a housing, one or more blades mounted on the housing, a cap behind the blades on the housing, and a guard structure in front of the blades on the housing, the guard structure including flexible skin-engaging protrusions that engage a user's skin in front of the blades and a water leachable shaving aid composite positioned to deliver a shaving aid to the skin behind the flexible skin-engaging protrusions.
    Type: Grant
    Filed: February 14, 1997
    Date of Patent: June 29, 1999
    Assignee: The Gillette Company
    Inventors: Yuling Yin, Alfred Porcaro, Mingchih Michael Tseng, Philip John Sweeney
  • Patent number: 5875797
    Abstract: Improved dental flosses include two or more components selected to provide desired properties to the floss. The improved flosses may comprise one or a plurality of multicomponent filaments, each filament including an inner core selected to provide strength to the floss, and an outer layer selected to provide a desired surface property. The improved flosses also may comprise one or a plurality of core filaments embedded in a single body sheath. The filament component provides desirable physical properties to the floss, such as tensile strength, while a floss body sheath component provides desirable surface properties.
    Type: Grant
    Filed: November 6, 1996
    Date of Patent: March 2, 1999
    Assignee: Gillette Canada Inc.
    Inventors: Casper W. Chiang, Edward Hosung Park, Brad Castillo, Mingchih Michael Tseng
  • Patent number: 5711076
    Abstract: A shaving system that includes a housing, one or more blades mounted on the housing, a cap behind the blades on the housing, and a guard structure in front of the blades on the housing, the guard structure including flexible skin-engaging protrusions that engage a user's skin in front of the blades and a water leachable shaving aid composite positioned to deliver a shaving aid to the skin behind the flexible skin-engaging protrusions.
    Type: Grant
    Filed: March 27, 1996
    Date of Patent: January 27, 1998
    Assignee: The Gillette Company
    Inventors: Yuling Yin, Alfred Porcaro, Mingchih Michael Tseng, Philip John Sweeney
  • Patent number: 5653971
    Abstract: The present invention is directed to a shaving system of the wet shave type comprising a blade member (one or more) and a structure which supports or holds the blade member and which has an external skin engaging portion in proximity to the blade member. The skin engaging portion includes an improved shaving aid composite (or lubricating strip) which contains an inclusion complex of a skin-soothing agent, such as menthol, with a cyclodextrin. Preferably the shaving aid composite comprises a matrix of a water-insoluble polymer, an effective amount of a skin lubricating water-soluble polymer dispersed within the matrix, and an inclusion complex of a skin-soothing agent with a cyclodextrin. Alternatively, the shaving aid composite may comprise a sheath of water-insoluble polymer that surrounds a core which includes a skin-lubricating water-soluble polymer and an inclusion complex of a skin-soothing agent with a cyclodextrin.
    Type: Grant
    Filed: June 30, 1995
    Date of Patent: August 5, 1997
    Assignee: The Gillette Company
    Inventors: Frank E. Badin, Thilivali T. Ndou, Lee K. Lim, Yuling Yin, Mingchih Michael Tseng