Patents by Inventor Peter Roper

Peter Roper 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).

  • Chemical-mechanical planarization of metallurgy
    Patent number: 6632377
    Abstract: Copper or a copper alloy is removed by chemical-mechanical planarization (CMP) in a slurry of an oxidizer, an oxidation inhibitor, and an additive that appreciably regulates copper complexing with the oxidation inhibitor.
    Type: Grant
    Filed: September 30, 1999
    Date of Patent: October 14, 2003
    Assignee: International Business Machines Corporation
    Inventors: Vlasta Brusic, Daniel C. Edelstein, Paul M. Feeney, William Guthrie, Mark Jaso, Frank B. Kaufman, Naftali Lustig, Peter Roper, Kenneth Rodbell, David B. Thompson
  • Indoor and outdoor cloth farm
    Patent number: 4713909
    Abstract: A farm structure for growing plants or crop in a small area or increasing an area for farming, composed of several tiers of cloth, one above another, each cloth supporting a quantity of earth in which plants are growing; water used in watering plants on the uppermost tier, dripping downward successively through at the tiers, so to water the plants in each tier; extra layers of cloth snapped under any tier for greater water retention, flood lights under each tier, giving light to plants in a tier therebelow and warming a soil thereabove, and an elevator mechanism for lowering the tiers of a large outdoor model, so that harvesting can be done more efficiently at a ground level.
    Type: Grant
    Filed: March 29, 1982
    Date of Patent: December 22, 1987
    Inventors: Peter Roper, George Spector