Patents by Inventor Robert H. Moffett

Robert H. Moffett 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: 20090084512
    Abstract: A process for producing a substrate having a surface that is resistant to adhesion of alkaline starch wherein a coating composition comprising a fluorosilicone and a solvent is applied to the surface of the substrate. The process is particularly applicable with substrates which are components of paper machines, such as paper corrugators. There is further provided an improved process for producing a corrugated paper wherein a coating composition comprising a fluorosilicone and a solvent is applied to the surface components of a paper corrugator.
    Type: Application
    Filed: October 2, 2007
    Publication date: April 2, 2009
    Inventor: Robert H. Moffett
  • Publication number: 20030015476
    Abstract: A process is provided which can be used to treat aqueous streams comprising soluble biomaterials, especially proteins, wherein the concentration of soluble biomaterials is substantially reduced. The process comprises adjusting the pH of a substantially aqueous to less than or equal to pH 3 to produce a first pH-adjusted stream, which is in turn adjusted to greater than pH 3 to produce a second pH-adjusted stream followed by addition of a flocculant to produce a flocculated material.
    Type: Application
    Filed: March 9, 2001
    Publication date: January 23, 2003
    Inventor: Robert H. Moffett
  • Patent number: 5626721
    Abstract: An improved method for the production of water soluble polyaluminosilicate microgels, formed by the reaction of solutions of alkali metal silicates with solutions of acids containing dissolved aluminum compounds, is provided.
    Type: Grant
    Filed: December 6, 1995
    Date of Patent: May 6, 1997
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: John D. Rushmere, Robert H. Moffett
  • Patent number: 5595630
    Abstract: A process for producing paper, utilizing a combination of anionic and cationic aluminum compound additives and providing superior freeness and diminished turbidity, is provided.
    Type: Grant
    Filed: August 31, 1995
    Date of Patent: January 21, 1997
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Robert H. Moffett
  • Patent number: 5584966
    Abstract: An improved method of paper formation, utilizing a combination of polysilicate microgel, anionic and cationic polymers with the optional utilization of an aluminum salt, is provided.
    Type: Grant
    Filed: February 21, 1995
    Date of Patent: December 17, 1996
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Robert H. Moffett
  • Patent number: 5543014
    Abstract: An improved method for the production of water soluble polyaluminosilicate microgels, formed by the reaction of solutions of alkali metal silicates with solutions of acids containing dissolved aluminum compounds, is provided.
    Type: Grant
    Filed: August 16, 1995
    Date of Patent: August 6, 1996
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: John D. Rushmere, Robert H. Moffett
  • Patent number: 5503820
    Abstract: An improved method for preparing low-concentration polysilicate microgels from a water soluble silicate and a strong acid in which the silicate and acid are mixed at a rate to produce a Reynolds number of at least 4000, the mixture is aged and then diluted to a silica concentration of not more than 1.0 wt. %. The method achieves reduced silica deposition during the preparation of the microgels.
    Type: Grant
    Filed: November 28, 1994
    Date of Patent: April 2, 1996
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Robert H. Moffett, John D. Rushmere
  • Patent number: 5482693
    Abstract: An improved method for the production of water soluble polyaluminosilicate microgels, formed by the reaction of solutions of alkali metal silicates with solutions of acids containing dissolved aluminum compounds, is provided.
    Type: Grant
    Filed: March 14, 1994
    Date of Patent: January 9, 1996
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: John D. Rushmere, Robert H. Moffett
  • Patent number: 5470435
    Abstract: An improved method for the production of water soluble polyaluminosilicate microgels, formed by the reaction of solutions of alkali metal silicates with solutions of acids containing dissolved aluminum compounds, is provided.
    Type: Grant
    Filed: November 23, 1994
    Date of Patent: November 28, 1995
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: John D. Rushmere, Robert H. Moffett
  • Patent number: 5312595
    Abstract: A method and apparatus for preparing low-concentration polysilicate microgels from a water soluble silicate and a strong acid in which the silicate and acid are mixed at a rate to produce a Reynolds number of at least 4000, the mixture is aged and then diluted to a silica concentration of not more than 1.0 wt. %.
    Type: Grant
    Filed: July 23, 1993
    Date of Patent: May 17, 1994
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Robert H. Moffett, John D. Rushmere
  • Patent number: 5279807
    Abstract: An improved method and apparatus for preparing low-concentration polysilicate microgels from a water soluble silicate and a strong acid in which the silicate and acid are mixed at a rate to produce a Reynolds number of at least 4000, the mixture is aged and then diluted to a silica concentration of not more than 1.0 wt. %.
    Type: Grant
    Filed: May 26, 1992
    Date of Patent: January 18, 1994
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Robert H. Moffett, John D. Rushmere
  • Patent number: 4714503
    Abstract: In emulsion blend explosives, the replacement of coarse salt particles, e.g., prills, by fines, i.e., particles which pass a No. 50 U.S. sieve, increases the water resistance of the explosive without deleteriously affecting its shelf life provided that the explosive, prior to such replacement, is storage-stable as determined by the Salt Extraction and lead compression tests described herein. Products containing a combination of whole and crushed ammonium nitrate prills, and emulsions made with an anionic emulsifying agent such as a fatty acid salt, are preferred. Depending on the fines content and chemical composition, other properties such as sensitivity to initiation and detonation velocity also may be improved.
    Type: Grant
    Filed: October 2, 1986
    Date of Patent: December 22, 1987
    Assignee: E. I. DuPont de Nemours and Company
    Inventors: Lawrence A. Cescon, Robert W. Trebilcock, Robert H. Moffett