Patents by Inventor Dennis H. Chadwick

Dennis H. Chadwick 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: 7458741
    Abstract: A storage and dispensing apparatus designed to contain pre-measured amounts of a substance(s). The apparatus comprises at least one compartment, preferably at least two compartments, for storing the substance(s) that is partially enclosed by a frangible seal, an applicator or dispensing conduit, and an expandable chamber designed to accept and dissipate the hydraulic force created when pressure is applied to the at least one compartment rupturing the frangible seal, and expelling the substance(s) into the chamber. The applicator is attached to the chamber with an applicator bond area. The expandability of the chamber is conferred by expandability of the chamber walls and of the applicator, when present, and is varied in different embodiments by altering the ratio between the area of the applicator bond area and the area of the applicator. The frangible seal, in one of many embodiments, may be a chevron shape stress riser with a point of inflection oriented towards the compartment.
    Type: Grant
    Filed: April 15, 2004
    Date of Patent: December 2, 2008
    Assignee: R.P. Scherer Technologies, Inc.
    Inventors: Bruce D. Detwiler, Dennis H. Chadwick
  • Patent number: 7331460
    Abstract: A shielded medication package including a blister portion and a blister shield attached to a backing substrate. Accessing a medicament is easy for an adult to accomplish, yet the package resists children biting and picking at the blister portion. The blister portion contains a base layer and a blister layer. The blister layer includes an article receiving blister designed for holding the medicament. A blister shield overlays the blister portion. The blister shield includes a blister well that cooperates with the article receiving blister. The blister shield protects the article receiving blister from substantially lateral forces. To eject the medicament, application of a substantially orthogonal force to the article receiving blister is required.
    Type: Grant
    Filed: January 4, 2006
    Date of Patent: February 19, 2008
    Assignee: R.P. Scherer Technologies, Inc.
    Inventors: David R. Barndt, Dennis H. Chadwick, Victor Gherdan, Jr.
  • Publication number: 20040223801
    Abstract: A storage and dispensing apparatus designed to contain pre-measured amounts of a substance(s). The apparatus comprises at least one compartment, preferably at least two compartments, for storing the substance(s) that is partially enclosed by a frangible seal, an applicator or dispensing conduit, and an expandable chamber designed to accept and dissipate the hydraulic force created when pressure is applied to the at least one compartment rupturing the frangible seal, and expelling the substance(s) into the chamber. The applicator is attached to the chamber with an applicator bond area. The expandability of the chamber is conferred by expandability of the chamber walls and of the applicator, when present, and is varied in different embodiments by altering the ratio between the area of the applicator bond area and the area of the applicator. The frangible seal, in one of many embodiments, may be a chevron shape stress riser with a point of inflection oriented towards the compartment.
    Type: Application
    Filed: April 15, 2004
    Publication date: November 11, 2004
    Inventors: Bruce D. Detwiler, Dennis H. Chadwick