Patents by Inventor Robert G. Jahn

Robert G. Jahn 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: 5830064
    Abstract: A method and apparatus of generating values and detecting whether the values fall outside chance probabilities. In one embodiment, a random-noise source provides a signal that is amplified, conditioned, and sampled to provide a series of random numbers. In one embodiment, conditioning includes inverting some of the values according to a pseudo-random sequence mask in order to remove certain first-order bias. Another aspect of this invention is to perform a statistical analysis of the values generated, and to control an output based in whether or not a chance expectation has been exceeded, or by the probability of a certain result obtained. Yet another aspect is to control a toy, game, appliance, or computer display based on whether or not a chance expectation has been exceeded by a measured sequence of values.
    Type: Grant
    Filed: July 19, 1996
    Date of Patent: November 3, 1998
    Assignee: Pear, Inc.
    Inventors: G. Johnston Bradish, York H. Dobyns, Brenda J. Dunne, Robert G. Jahn, Roger D. Nelson, John E. Haaland, Steven M. Hamer
  • Patent number: 4537916
    Abstract: A process for preparing structured latex particles having a core and shell region wherein said latex particles are film forming at room temperature by adjusting the feed rates of the shell monomer feeds such that as the weight fraction of the shell increases the feed rate of an acrylate and/or monovinyl monomer or extended core monomer feed of monovinyl aromatic monomer is decreased whereby a shell region encapsulates the core region are described. Structured latex particles prepared by the process are also described. Films of the subject structured latex particle where the shell monomer feed is methylmethacrylate or similar high T.sub.g monomer have good film strength. Further, films of the subject structured latex where the shell monomer feed is butyl acrylate or similar monomers having water repellency characteristics have improved corrosion resistant properties.
    Type: Grant
    Filed: June 25, 1984
    Date of Patent: August 27, 1985
    Assignee: The Dow Chemical Company
    Inventors: Fabio B. Bruschtein, Robert G. Jahn, Edwin L. Wittbrodt
  • Patent number: 3988500
    Abstract: Heat-sealable vinylidene chloride polymer coatings having improved anti-blocking tendencies while unexpectedly retaining resistance to oxygen transmission are obtainable by overcoating a preformed normally crystalline vinylidene chloride polymer coating with an aqueous dispersion of the sodium salt of lauryl alcohol sulfate.
    Type: Grant
    Filed: November 22, 1974
    Date of Patent: October 26, 1976
    Assignee: The Dow Chemical Company
    Inventor: Robert G. Jahn
  • Patent number: T957009
    Abstract: heat-sealable vinylidene chloride polymer coatings having improved anti-blocking tendencies while retaining resistance to oxygen transmission are obtained from aqueous dispersions of a normally crystalline vinylidene chloride polymer wherein such dispersions have incorporated therein from about 0.5 to about 5 percent based on the weight of normally crystalline vinylidene chloride polymer of a plurality of polymeric microspheres having an average diameter of between about 1 to about 5 microns, such microspheres consisting essentially of a vinylidene chloride polymer containing at least about 50 percent by weight of polymerized vinylidene chloride with any remainder of such polymer being one or more monoethylenically unsaturated comonomer.
    Type: Grant
    Filed: May 17, 1976
    Date of Patent: April 5, 1977
    Inventor: Robert G. Jahn