Patents Assigned to JP Laboratories
  • Patent number: 4941940
    Abstract: Formulations are provided for pre-swelling and etching of functionalized polymers, such as polycarbonate in one, two and three steps. The etched surface can then be plated with electroless nickel or copper with satisfactory adhesion of the plated metals. Swelling agents make polymer molecules on and near the surface of the polymer easily accessible to a degradation agent. A degradation agent degradates the polymer molecules. If required, a solubilizing agent increases the miscibility of the degradation agent and the swelling agent. A wetting agent increases the effectiveness of the etching agent.In the one-step process, polymer parts are dipped in a solution containing at least one swelling agent and at least one degradation agent. In the two-step process, polymer parts are first treated with a solution of a swelling agent followed by etching with a solution of degradation agent.
    Type: Grant
    Filed: November 7, 1988
    Date of Patent: July 17, 1990
    Assignee: JP Laboratories, Inc.
    Inventors: Gordhanbhai N. Patel, Durgadas Bolikal, Richard A. Bellemare
  • Patent number: 4788432
    Abstract: The present invention relates to a device for monitoring alpha particles and material emitting alpha particles such as radon and its daughters. The device can also be used for monitoring other high energy particles such as cosmic rays, nuclear fission fragments, nucleon ions, and neutrons having energy between 0.1 and 200 MeV.In the operation of the invention, the high energy particles pass through and degrade tracks in a track registering material placed on a carrier substrate. These tracks are enlarged with a developing agent which etches the initial tracks. The enlarged tracks are then visualized by means of a color change in the immediate vicinity of these tracks.
    Type: Grant
    Filed: July 17, 1987
    Date of Patent: November 29, 1988
    Assignee: JP Laboratories, Inc.
    Inventor: Gordhanbhai Patel