Patents by Inventor Willie E. Rochefort

Willie E. Rochefort 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).

  • Multi-layered patch system and method
    Patent number: 9109740
    Abstract: A multi-layered patch including a backing layer, an outer layer, polymer adhesive layers that include a polymer foam and a solvent, and a heating layer that includes a polymer substrate, a heating element and a sensor, and methods of making and using the multi-layered patch.
    Type: Grant
    Filed: November 5, 2012
    Date of Patent: August 18, 2015
    Assignee: Timberline Tool, L.L.C.
    Inventors: Kenneth H. Green, Willie E. Rochefort, Nicholas Wannenmacher, Kevin Edward Harris, Staci Alix Van Norman
  • Multi-layered composite system and method
    Patent number: 8329291
    Abstract: A multi-layered composite includes a polymer adhesive layer and a polymer support film layer that becomes intimately incorporated with the polymer adhesive layer upon application of heat.
    Type: Grant
    Filed: August 29, 2008
    Date of Patent: December 11, 2012
    Assignee: Timberline Tool, L.L.C.
    Inventors: Kenneth H. Green, Willie E. Rochefort, Nicholas Wannenmacher, Kevin Edward Harris, Staci Alix Van Norman
  • Polyethylene pipe patching systems and methods
    Patent number: 8057895
    Abstract: Film composites useful as adhesives for plastic piping are described.
    Type: Grant
    Filed: July 27, 2007
    Date of Patent: November 15, 2011
    Assignee: Timberwolf Corporation
    Inventors: Kenneth H. Green, Kenneth D. Cramer, Willie E. Rochefort
  • MULTI-LAYERED COMPOSITE SYSTEM AND METHOD
    Publication number: 20090050256
    Abstract: A multi-layered composite includes a polymer adhesive layer and a polymer support film layer that becomes intimately incorporated with the polymer adhesive layer upon application of heat.
    Type: Application
    Filed: August 29, 2008
    Publication date: February 26, 2009
    Inventors: Kenneth H. Green, Willie E. Rochefort
  • Polybenzazole fibers having improved tensile strength retention
    Patent number: 5552221
    Abstract: Described is a method for preparing a polybenzazole filament which comprises extruding a polybenzazole dope filament, drawing the filament across an air gap, coagulating and washing the filament, and drying the filament, characterized in that a solution of a compound selected from the group consisting of ferrocenes, ruthocene, iodide-, cobalt-, and copper-containing compounds, dyes, and mixtures thereof is contacted with a filament subsequent to the washing step and prior to the drying step. This method provides a means to improve the tensile strength retention of damaged polybenzazole filaments following exposure to sunlight.
    Type: Grant
    Filed: December 29, 1994
    Date of Patent: September 3, 1996
    Assignee: The Dow Chemical Company
    Inventors: Ying H. So, Steven J. Martin, Chieh-Chun Chau, Ritchie A. Wessling, Ashish Sen, Katsuhiko Kato, Daniel B. Roitman, Willie E. Rochefort
  • Process for coagulating and washing lyotropic polybenzazole films
    Patent number: 5302334
    Abstract: A process for coagulating a polybenzazole film which includes contacting a lyotropic polybenzazole dope film that is constrained in at least two directions with a coagulant under conditions such that the polybenzazole polymer separates as a gelled moiety with the structure set such that further removal of solvent will result in no more than a 5% increase in the force necessary to constrain the film.
    Type: Grant
    Filed: May 21, 1992
    Date of Patent: April 12, 1994
    Assignee: The Dow Chemical Company
    Inventors: Peter E. Pierini, Reid H. Bowman, Willie E. Rochefort, Ming-Biann Liu
  • Process for coagulation, washing and leaching of shaped polybenzazole articles
    Patent number: 5292469
    Abstract: Articles (other than fiber) made from polybenzazole dopes can quickly be washed to remove polyphosphoric acid by a combination of initially washing with an acidic liquid and second washing with a hot leaching fluid at at least about 60.degree. C. The process can reach acceptable residual phosphorous levels (1500-2000 ppm) in as little as about 2 or 3 minutes.
    Type: Grant
    Filed: January 5, 1993
    Date of Patent: March 8, 1994
    Assignee: The Dow Chemical Company
    Inventors: Reid H. Bowman, Willie E. Rochefort, Ming-Biann Liu, Peter E. Pierini
  • Convective leaching of polybenzazole films
    Patent number: 5292470
    Abstract: Films made from polybenzazole dopes can quickly be leached to remove polyphosphoric acid and other residual solvents by passing a leaching fluid such as steam through pores in the wet, never dried film. The process can reach acceptable residual phosphorous levels (1500-2000 ppm) in as little as about 2 or 3 minutes.
    Type: Grant
    Filed: January 5, 1993
    Date of Patent: March 8, 1994
    Assignee: The Dow Chemical Company
    Inventors: Lalitha Reddy, Willie E. Rochefort, Ming-Biann Liu, Peter E. Pierini