Patents by Inventor James C. Uy

James C. Uy 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: 5268806
    Abstract: A magnetoresistive (MR) sensor having electrically conductive lead structures which are in electrical contact with the MR element at spaced positions. The lead structures comprise a thin film layer of body-centered-cubic tantalum which is separated from the MR element by a thin film seed layer formed of a material taken from the group consisting of TiW, TaW, Cr and W.
    Type: Grant
    Filed: January 21, 1992
    Date of Patent: December 7, 1993
    Assignee: International Business Machines Corporation
    Inventors: Wolfgang M. Goubau, James K. Howard, Hung-Chang W. Huang, Cherngye Hwang, Robert O. Schwenker, James C. Uy
  • Patent number: 4376963
    Abstract: A composite structure for magnetic recording includes a core member of polymeric material to which is bonded at least one silicon disk having a magnetic recording material on its outer surface. The silicon disk surface provides optimal flatness and smoothness characteristics for a magnetic recording substrate, while the polymeric core member provides strength to the structure.
    Type: Grant
    Filed: December 19, 1980
    Date of Patent: March 15, 1983
    Assignee: International Business Machines Corporation
    Inventors: Jack P. Knoop, Joel R. Weiss, James C. Uy
  • Patent number: 4310477
    Abstract: A method of making a silicon nitride part is disclosed. In this method an article of silicon nitride is first made which has a density less than the theoretical density of silicon nitride. This article also contains a densification aid. The entire surface area of this article is coated with a thin silicon nitride skin which is gas impervious. The so coated article is heated to a temperature for a time sufficient so that some of the densification aid may diffuse into the silicon nitride skin. The so treated article is then subjected to a pressure sufficiently high, for a time sufficiently long and at a temperature which permits the silicon nitride article and skin thereon to be compacted to increase the density of the article to a density greater than it originally had and to form the silicon nitride skin about the article so that the skin becomes an integral of the finished part.
    Type: Grant
    Filed: March 25, 1977
    Date of Patent: January 12, 1982
    Assignee: Ford Motor Company
    Inventors: James C. Uy, Andre Ezis
  • Patent number: 3981688
    Abstract: A rotor housing for a rotary internal combustion engine is disclosed having a wear-resistant coating system characterized by high temperature hardness stability and controlled porosity to improve the lubricating characteristics of the surface-to-surface engagement with the rotary apex seals. The coating system comprises a self-fused composite of martensitic stainless steel powder and an equally hard powder consisting of a nickel-based alloy. Powder particle size is controlled to render a smoother machined surface and sub-surface porosity. An intermediate transition coating may be used consisting of a composition selected from nickel aluminide, are sprayed nickel, molybdenum, all effective to operate as a bonding intermediate to a supporting aluminum structure.
    Type: Grant
    Filed: June 7, 1974
    Date of Patent: September 21, 1976
    Assignee: Ford Motor Company
    Inventors: Yeshwant P. Telang, James C. Uy
  • Patent number: 3981062
    Abstract: An apex seal element for a rotary internal combustion engine is described which is comprised of a cemented carbide having a binder constituted of nickel and molybdenum carbide and a controlled addition of excess free carbon (or equivalent lubricating agent).
    Type: Grant
    Filed: October 1, 1973
    Date of Patent: September 21, 1976
    Assignee: Ford Motor Company
    Inventors: David Moskowitz, James C. Uy
  • Patent number: 3974309
    Abstract: A rotary internal combustion engine and particularly an improved rotor construction for such engine and method of making is disclosed. A coating system is applied at least to the flank surfaces of the rotor which face the variable volume combustion chambers of the engine, the system serving to reduce heat flow to the oil lubrication system within the rotor and to quench heat build-up on the above surfaces to prevent pre-ignition. The engine is permitted to run at a somewhat higher operating temperature resulting in increased efficiency, better fuel consumption and reduction of emissions. In the method of construction, vaporizing means is employed to supply vaporizable material from two crucibles. The means can be controlled to deposit one or a mixture of said vaporizable materials. One crucible contains an adherent conductive metal and the other crucible contains an insulating medium.
    Type: Grant
    Filed: December 16, 1974
    Date of Patent: August 10, 1976
    Assignee: Ford Motor Company
    Inventor: James C. Uy
  • Patent number: RE32193
    Abstract: A composite structure for magnetic recording includes a core member of polymeric material to which is bonded at least one silicon disk having a magnetic recording material on its outer surface. The silicon disk surface provides optimal flatness and smoothness characteristics for a magnetic recording substrate, while the polymeric core member provides strength to the structure.
    Type: Grant
    Filed: March 18, 1985
    Date of Patent: June 24, 1986
    Assignee: International Business Machines Corporation
    Inventors: Jack P. Knoop, Joel R. Weiss, James C. Uy