Patents by Inventor Ravi K. Nigam

Ravi K. Nigam 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: 20030182928
    Abstract: The present invention relates to a scram jet engine for use with a hypersonic vehicle. The scram jet engine has an upper boundary wall, a lower boundary wall, and a plurality of side walls defining an inner air flowpath. The walls are formed by a plurality of tubular heat exchanger panels. Each of the heat exchanger panels comprises a plurality of structural panels, each having a plurality of cooling passages, joined together. In the scram jet engine of the present invention, fuel may be used as a coolant and supplied to the cooling passage.
    Type: Application
    Filed: March 28, 2002
    Publication date: October 2, 2003
    Inventors: Mark A. Sillence, Daniel P. Guinan, Dennis J. Nemecek, Costante Salvador, Henry K. Webster, Thomas B. Fortin, Sergio Rinella, Ravi K. Nigam
  • Patent number: 5420941
    Abstract: A pipelined image processor generates an image of the information contained on first and second portions of a document. The pipelined image processor includes a first pipe for processing information contained on the first portion of the document, and second pipe for processing information contained on the second portion of the document. The pipes receive the output from two camera assemblies which are used for generating an electrical signal in response to information contained on the document, an image digitizer for generating digitized information from the electrical signal by the means for generating an electrical signal. In addition, both pipes also include a resequencer for generating resequenced information from the digitized information, as well as an image processor for generating processed information from the resequenced information.
    Type: Grant
    Filed: September 17, 1993
    Date of Patent: May 30, 1995
    Assignee: Unisys Corporation
    Inventors: Joseph M. Capo, Robert D'Aoust, Debora Y. Grosse, Robert Klein, Ravi K. Nigam, George E. Reasoner, Jr., David C. Williams
  • Patent number: 5287416
    Abstract: A pipelined image processor generates an image of the information contained on first and second portions of a document. The pipelined image processor includes a first pipe for processing information contained on the first portion of the document, and second pipe for processing information contained on the second portion of the document. The pipes receive the output from two camera assemblies which are used for generating an electrical signal in response to information contained on the document, an image digitizer for generating digitized information from the electrical signal by the means for generating an electrical signal. In addition, both pipes also include a resequencer for generating resequenced information from the digitized information, as well as an image processor for generating processed information from the resequenced information.
    Type: Grant
    Filed: August 17, 1992
    Date of Patent: February 15, 1994
    Assignee: Unisys Corporation
    Inventors: Joseph M. Capo, Robert D'Aoust, Debora Y. Grosse, Robert Klein, Ravi K. Nigam, George E. Reasoner, Jr., David C. Williams