Patents by Inventor Nguyen Dang

Nguyen Dang 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: 20050036851
    Abstract: A subgrade vault to provide an enclosed housing for utility connections. The housing is made of a moldable material with a reinforcing skirt at one end and a seat in the other. A lid is received in the seat to close its upper end. A clip is optionally provided for fastening the lid to the housing body that can be clipped on the body and engaged by a fastener carried by the lid.
    Type: Application
    Filed: September 10, 2004
    Publication date: February 17, 2005
    Inventors: Nguyen Dang, Reilly Flynn
  • Patent number: 5707934
    Abstract: This invention relates to a new method of plant growth regulation whereby a 1-phenylpyrazole such as fipronil is applied to a crop or a seed.
    Type: Grant
    Filed: March 27, 1996
    Date of Patent: January 13, 1998
    Assignee: Rhone-Poulenc Inc.
    Inventors: Reed Nathan Royalty, Nguyen Dang Long, Michael Thomas Pilato, Nicholas Mark Hamon, Ngadi Yahmad, Djoko Prabowo Sastrosatomo
  • Patent number: 4515114
    Abstract: A two-part piston assembly is disclosed for increasing the removal of exhaust gases from an internal combustion engine during the exhaust stroke. The two-part piston (14a), (16a), shown in several embodiments, may include an appropriately adjusted spring assembly (54), (56), (50), (52) to insure that the assembly will be in a compressed state during compression and a distended state during exhaust. This can also be accomplished by a cam mechanism (78) having a ratchet (110) with pawls (114), which operate on the angular movement of the crankshaft (18) with the cam operating a cam follower (80) producing the same result as in the previous embodiments.
    Type: Grant
    Filed: August 15, 1983
    Date of Patent: May 7, 1985
    Inventor: Nguyen Dang
  • Patent number: 4100482
    Abstract: A method and apparatus for measuring ellipse parameters of polarization of an electromagnetic field are disclosed. When a geophysical anomaly exists which, in the presence of a primary alternating electromagnetic field will produce a secondary field, the resultant field is elliptically polarized and the ellipse of polarization is tilted at any location where the presence of the secondary field is being tested for. A receiver is provided having crossed coils, and both the receiver and transmitter have specific orientations which are set up whenever the receiver and transmitter are situated at any location for testing for the presence of an anomaly at least in the region of the receiver. When signals are detected on the crossed coils of the receiver, the receiver is maintained in its specific orientation while the signals from the crossed coils are examined at least so as to determine the phase difference quantity .phi.
    Type: Grant
    Filed: June 29, 1976
    Date of Patent: July 11, 1978
    Assignee: Mits-Co Geophysics Ltd.
    Inventors: Mitsura Yamashita, Kousaku Hirano, Nguyen Dang Thai