Patents by Inventor Karen H. Brown

Karen H. Brown 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: 20010034920
    Abstract: An apparatus configured for applying lotion to hard-to-reach areas of a person's body consisting of a head portion 12 to which a sponge 16 is secured with a handle portion 14 extending outward from the head portion of the apparatus. A handle extension 18 extends from the handle portion. The head, handle, and handle extension are formed of plastic, acrylic or, in the alternative, may be formed of a metal such as stainless steel.
    Type: Application
    Filed: March 20, 2001
    Publication date: November 1, 2001
    Inventor: Karen H. Brown
  • Patent number: 5246885
    Abstract: A method for providing superior fill of features in semiconductor processing utilizes a laser ablation system. Deposition is obtained by ablating target materials which are driven off perpendicular to the target in the direction of the deposition surface. The method provides complete fill of high aspect ratio features with nominal heating of the substrate. Alloys and graded layers, as well as pure metals, can be deposited in low temperature patterned layers. In addition, the system has been used to achieve superior trench filling for isolation structures.
    Type: Grant
    Filed: August 20, 1992
    Date of Patent: September 21, 1993
    Assignee: International Business Machines Corporation
    Inventors: Bodil E. Braren, Karen H. Brown, Kathleen A. Perry, Rangaswamy Srinivasan, Alvin Sugerman
  • Patent number: 4560435
    Abstract: This composite back-etch/lift-off stencil method avoids the uncontrolled changes in the properties of contacts in small devices caused by the close proximity of the lift-off resist stencil to the contact area during the precleaning, surface preparation and metal deposition processes. This method limits the area of the wafer exposed to back-etching and thus restores the freedom of choice of contact metallurgy. Back-etching is only applied in the areas of the wafer near to the contact holes; lift-off techniques are used for the rest of the integrated circuit.
    Type: Grant
    Filed: October 1, 1984
    Date of Patent: December 24, 1985
    Assignee: International Business Machines Corporation
    Inventors: Karen H. Brown, David F. Moore, Bernard J. C. van der Hoeven, Jr.
  • Patent number: 4451503
    Abstract: A method for depositing a refractory metal onto a substrate wherein a carbonyl compound vapor of the metal in the vicinity of or on the substrate is photodecomposed by ultraviolet radiation of wavelengths less than 200 nm. This causes the release of atoms of the metal, which then condense onto the substrate. In an example, a tungsten layer is photodeposited by this method onto a GaAs semiconductor layer to form a Schottky barrier diode.
    Type: Grant
    Filed: June 30, 1982
    Date of Patent: May 29, 1984
    Assignee: International Business Machines Corporation
    Inventors: Samuel E. Blum, Karen H. Brown, Rangaswamy Srinivasan
  • Patent number: 4414059
    Abstract: A technique is described for the fabrication of devices and circuits using multiple layers of materials, where patterned layers of resists are required to make the device or circuit. The fabrication process is characterized by the selective removal of portions of the resist layer by ablative photodecomposition. This decomposition is caused by the incidence of ultraviolet radiation of wavelengths less than 220 nm, and power densities sufficient to cause fragmentation of resist polymer chains and the immediate escape of the fragmented portions from the resist layer. Energy fluences in excess of 10 mJ/cm.sup.2 /pulse are typically required. The deliverance of a large amount of energy in this wavelength range to the resist layer in a sufficiently short amount of time causes ablation of the polymer chain fragments. No subsequent development step is required for patterning the resist layer.
    Type: Grant
    Filed: December 9, 1982
    Date of Patent: November 8, 1983
    Assignee: International Business Machines Corporation
    Inventors: Samuel E. Blum, Karen H. Brown, Rangaswamy Srinivasan