Patents by Inventor Stephen Weinhold

Stephen Weinhold 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: 20010038014
    Abstract: Base cup for receiving a container body bottom and for reducing heat gain to fluid contents in the container body. A passive base cup is made of foam and has a reflective layer on a majority of the outer surface thereof, or made of plastic, with an outer reflective layer, and optionally a foam layer. An active base cup serves to actively cool the fluid in the container, by including a compartment therein with a fluid that can be frozen. Again, a reflective layer and an optional foam layer extend over a majority of the outer surface of the cup. The reflective layer materials have a density different than the cup materials to facilitate recycling.
    Type: Application
    Filed: May 2, 2001
    Publication date: November 8, 2001
    Inventors: Michael E. Donelson, Lawrence A. Coppari, Stephen Weinhold, Marcus D. Shelby, Steven S. Duncan, Robert N. Estep
  • Patent number: 6159406
    Abstract: The present invention relates to a process for introducing strain-induced crystallization to polyesters. Specifically, amorphous polymer from the melt phase reactor is first extruded through a traditional strand die. However, instead of going directly into a pelletizer/cutter, it is stretched uniaxially at a temperature only slightly higher than Tg. The chain alignment resulting from stretching makes crystallization occur at a considerably higher rate than with traditional thermal crystallization. After this stretching process, the strand is annealed and fed to the pelletizer and chopped. The process of the present invention is advantageous for crystallizing polymers having slow rate of thermal crystallization half time from the glass. Optically clear polymers having at least about 15% crystallinity and a single melting point endotherm are produced.
    Type: Grant
    Filed: May 24, 2000
    Date of Patent: December 12, 2000
    Assignee: Eastman Kodak Company
    Inventors: Marcus David Shelby, Michael Eugene Donelson, Stephen Weinhold, Harry Probert Hall
  • Patent number: 5980797
    Abstract: An apparatus and a method for molding of polyester articles having low acetaldehyde content directly from a melt without intermediate solidification of the molten polyester. A melt to mold process is used wherein an acetaldehyde stripping agent is mixed into a polyester melt before devolatilization in a flash tank. The devolatilized polyester is pumped out of the flash tank and injected into a mold, thus forming a shaped article. The apparatus may include one or more flash tanks in one devolatilization line, or multiple devolatilization lines may be used stemming from one main polymerization reactor. The final shaped article should contain less than 10 ppm of acetaldehyde.
    Type: Grant
    Filed: October 24, 1997
    Date of Patent: November 9, 1999
    Assignee: Eastman Chemical Company
    Inventors: Marcus David Shelby, Lanney Calvin Treece, Max Lamar Carroll, Jr., Stephen Weinhold
  • Patent number: 5290560
    Abstract: The present invention relates to new granules, as well as the process for their preparation, obtained by extrusion of a mixture containing a meltable binder in an amount such that it permits the passage of the mixture through a die. The granules obtained are then coated with a polymer permitting their trans-rumen passage without degradation. After coating, these granules are used for animal feeding of ruminants.
    Type: Grant
    Filed: June 21, 1991
    Date of Patent: March 1, 1994
    Assignee: Rhone-Poulenc Nutrition Animale
    Inventors: Pierre Autant, Jacques Ruel, Stephen Weinhold, Charles A. McCombs, Ernest P. Smith, Stephen H. Wu, Louis P. Hoskins