Patents by Inventor Lewis E. Manring

Lewis E. Manring 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).

  • Esterification of carboxylate containing polymers
    Patent number: 5463182
    Abstract: A process for esterifying a polymer containing carboxyl(ate) groups, by maintaining the polymer at 0.degree. C. to 200.degree. C. where the counterion for the carboxylate groups is a selected ammonium or sulfoxonium ions. Such processes are useful for preparing improved films and coatings, particularly automotive coatings.
    Type: Grant
    Filed: September 21, 1993
    Date of Patent: October 31, 1995
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Lewis E. Manring, Michael W. J. West
  • Quaternary ammonium polyarylamides, used to manufacture articles and adhere polyamide objects
    Patent number: 5407626
    Abstract: Quaternary ammonium polyarylamides are provided that are useful in articles of manufacture that require minimal ionic impurities. The polyarylamides are produced by reacting certain polyamides together with quaternary ammonium bases of the formula R.sup.4.sub.4 N.sup.+ X.sup.-, wherein each R.sup.4 is independently selected from hydrocarbyl or substituted hydrocarbyl, provided that at least one of the R.sup.4 groups contains at least one beta hydrogen atom. There is also provided the process for producing the polyarylamides, the process for making articles of manufacture from the polyarylamides, and a process for modifying the surfaces of such polyamides.
    Type: Grant
    Filed: June 11, 1993
    Date of Patent: April 18, 1995
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Robert R. Burch, Lewis E. Manring
  • Polymers of 2,2-disubstituted-3-hydroxypropionic acid for ceramic processing
    Patent number: 5389447
    Abstract: Polymers of 2,2-disubstituted-3-hydroxypropionic acid, e.g., polymers of .beta.-propiolactone, are employed in ceramic compositions as binders or dispersing agents.
    Type: Grant
    Filed: June 20, 1989
    Date of Patent: February 14, 1995
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Roe C. Blume, Lewis E. Manring, William G. Peet
  • Esterification of carboxylate containing polymers
    Patent number: 5324790
    Abstract: A process for esterifying a polymer containing carboxyl(ate) groups, by maintaining the polymer at 0.degree. C. to 200.degree. C., where the counterion for the carboxylate groups is a selected ammonium or sulfoxonium ions. Such processes are useful for preparing improved films and coatings, particularly automotive coatings.
    Type: Grant
    Filed: September 29, 1992
    Date of Patent: June 28, 1994
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Lewis E. Manring
  • Quaternary ammonium polyarylamide
    Patent number: 5242991
    Abstract: Quaternary ammonium polyarylamides are provided that are useful in articles of manufacture that require minimal ionic impurities. The polyarylamides are produced by reacting certain polyamides together with quaternary ammonium bases of the formula R.sup.4.sub.4 N.sup.+ X.sup.-, wherein each R.sup.4 is independently selected from hydrocarbyl or substituted hydrocarbyl, provided that at least one of the R.sup.4 groups contains at least one beta hydrogen atom. There is also provided the process for producing the polyarylamides, the process for making articles of manufacture from the polyarylamides, and a process for modifying the surfaces of such polyamides.
    Type: Grant
    Filed: January 13, 1992
    Date of Patent: September 7, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Robert R. Burch, Lewis E. Manring
  • Preparation of 2,2-dihydrocarbyl-3-propiolactones
    Patent number: 5155237
    Abstract: 2,2-Dihydrocarbyl-3-propiolactones are prepared by the thermolysis at 175.degree. C. to 350.degree. C. of low molecular weight (oligomeric) poly(3-hydroxy-2,2-dihydrocarbylpropionic acid) that contains carboxyl ends groups, in the presence of alkali metal, ammonium or phosphonium cations. The propiolactones may be polymerized to high molecular weight polymers.
    Type: Grant
    Filed: January 22, 1991
    Date of Patent: October 13, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Roe C. Blume, Lewis E. Manring
  • Patterned metal interlayer in a matrix
    Patent number: 4774157
    Abstract: This invention resides in a counter-current diffusion method for the formation of a metallic interlayer within a matrix, for example, a polymeric matrix, by controlling the permeability of the matrix, the permeability preferably being controlled by controlling matrix swelling.
    Type: Grant
    Filed: May 19, 1987
    Date of Patent: September 27, 1988
    Assignee: E. I. Du Pont De Nemours and Company
    Inventor: Lewis E. Manring
  • Metal interlayers in films by counter-current diffusion
    Patent number: 4752529
    Abstract: This invention relates to counter-current diffusion methods for depositing metals as interlayers within films.
    Type: Grant
    Filed: July 22, 1987
    Date of Patent: June 21, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Lewis E. Manring, Stephen Mazur
  • Metal interlayers in films by counter-current diffusion
    Patent number: 4692360
    Abstract: This invention relates to counter-current diffusion methods for depositing metals as interlayers within films.
    Type: Grant
    Filed: January 21, 1986
    Date of Patent: September 8, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Lewis E. Manring, Stephen Mazur