Patents by Inventor Roger Edgar Neff

Roger Edgar Neff 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).

  • Process for making high performance anionic polymeric flocculating agents
    Patent number: 6191242
    Abstract: Unsheared, water-soluble, branched, high molecular weight, anionic, polymeric flocculants are produced by polymerizing ethylenically unsaturated anionic, and optionally non-ionic, monomers and a branching agent in the presence of a chain-transfer agent. They are useful as flocculating agents for releasing water from dispersions of suspended solids.
    Type: Grant
    Filed: November 27, 1996
    Date of Patent: February 20, 2001
    Assignee: Cytec Technology Corp.
    Inventors: Roderick Glyn Ryles, Roger Edgar Neff, Joseph Jacinto Pellon
  • High performance polymer flocculating agents nonionic polymers
    Patent number: 6147176
    Abstract: Water-soluble, branched, high molecular weight, cationic and non-ionic polymeric flocculants capable of manifesting their full performance potential without shearing are produced by polymerizing ethylenically unsaturated cationic and non-ionic monomers and a branching agent in the presence of a chain-transfer agent. They are useful as flocculating agents for releasing water from dispersions of suspended solids.
    Type: Grant
    Filed: April 8, 1997
    Date of Patent: November 14, 2000
    Assignee: Cytec Technology Corp.
    Inventors: Roger Edgar Neff, Joseph Jacinto Pellon, Roderick Glyn Ryles
  • Water-soluble, highly branched polymeric microparticles
    Patent number: 6130303
    Abstract: Water-soluble, high molecular weight, polymeric, microparticles with a high degree of branching are disclosed. A microemulsion polymerization process for preparing the microparticles is also disclosed. The microparticles give excellent results in a number of solid-liquid separation processes.
    Type: Grant
    Filed: January 11, 1994
    Date of Patent: October 10, 2000
    Assignee: Cytec Technology Corp.
    Inventors: Roger Edgar Neff, Roderick Glyn Ryles
  • Method of dewatering suspensions with unsheared anionic flocculants
    Patent number: 5961840
    Abstract: Unsheared, water-soluble, branched, high molecular weight, anionic, polymeric flocculants are produced by polymerizing ethylenically unsaturated anionic, and optionally non-ionic, monomers and a branching agent in the presence of a chain-transfer agent. They are useful as flocculating agents for releasing water from dispersions of suspended solids.
    Type: Grant
    Filed: December 2, 1996
    Date of Patent: October 5, 1999
    Assignee: Cytec Technology Corp.
    Inventors: Roderick Glyn Ryles, Roger Edgar Neff, Joseph Jacinto Pellon
  • High performance cationic polymer flocculating agents
    Patent number: 5945494
    Abstract: Water-soluble, branched, high molecular weight, cationic and non-ionic polymeric flocculants capable of manifesting their full performance potential without shearing are produced by polymerizing ethylenically unsaturated cationic and non-ionic monomers and a branching agent in the presence of a chain-transfer agent. They are useful as flocculating agents for releasing water from dispersions of suspended solids.
    Type: Grant
    Filed: March 8, 1993
    Date of Patent: August 31, 1999
    Assignee: Cytec Technology Corp.
    Inventors: Roger Edgar Neff, Joseph Jacinto Pellon, Roderick Glyn Ryles
  • High performance anionic polymeric flocculating agents
    Patent number: 5919882
    Abstract: Unsheared, water-soluble, branched, high molecular weight, anionic, polymeric flocculants are produced by polymerizing ethylenically unsaturated anionic, and optionally non-ionic, monomers and a branching agent in the presence of a chain-transfer agent. They are useful as flocculating agents for releasing water from dispersions of suspended solids.
    Type: Grant
    Filed: December 2, 1996
    Date of Patent: July 6, 1999
    Assignee: Cytec Technology Corp.
    Inventors: Roderick Glyn Ryles, Roger Edgar Neff, Joseph Jacinto Pellon
  • Method for treating suspended solids
    Patent number: 5882525
    Abstract: Water-soluble, branched, high molecular weight, cationic and non-ionic polymeric flocculants capable of manifesting their full performance potential without shearing are produced by polymerizing ethylenically unsaturated cationic and non-ionic monomers and a branching agent in the presence of a chain-transfer agent. They are useful as flocculating agents for releasing water from dispersions of suspended solids.
    Type: Grant
    Filed: October 24, 1997
    Date of Patent: March 16, 1999
    Assignee: Cytec Technology Corp.
    Inventors: Roger Edgar Neff, Joseph Jacinto Pellon, Roderick Glyn Ryles
  • High performance dewatering aids
    Patent number: 5643461
    Abstract: Water-soluble, branched, high molecular weight, cationic polymers are used in combination with low molecular weight, cationic polymers to provide the highly improved dewatering of suspended solids. Water-in-oil emulsions containing these cationic polymers in the aqueous phase are also described.
    Type: Grant
    Filed: May 24, 1995
    Date of Patent: July 1, 1997
    Assignee: Cytec Technology Corp.
    Inventors: Roger Edgar Neff, Joseph Jacinto Pellon, Roderick Glyn Ryles
  • Preparation of anionic polymers for use as scale inhibitors and anti-precipitants
    Patent number: 4072607
    Abstract: An anionic polymer of acrylamide having a skewed molecular weight distribution such that about 60% of said polymer has a molecular weight of about 500 to 2,000 and about 10% of said polymer has a molecular weight of about 4,000 to 12,000 has been discovered. The process of manufacturing this skewed molecular weight distribution anionic polymer is described. Its use as a scale inhibitor for controlling the deposition of adherent scales on the walls of vessels or pipes, and as an anti-precipitant for keeping alkaline earth cations in solution is also described. The use of the anionic polymer of acrylamide consisting of a skewed molecular weight could be used in recirculating water systems, boilers, and in evaporative and reverse osmosis desalination systems.
    Type: Grant
    Filed: October 26, 1976
    Date of Patent: February 7, 1978
    Assignee: American Cyanamid Company
    Inventors: Arthur Maurice Schiller, Richard Martin Goodman, Roger Edgar Neff