Patents by Inventor Robert Gelman

Robert Gelman 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: 20050143506
    Abstract: A method to invert an inverse emulsion water compatible polymer product using a combination of surfactants that have specific chemical structures is disclosed. A combination, or blend, of two or more surfactants provides for an effective breaker system. The blend of surfactants is more effective than the individual surfactants.
    Type: Application
    Filed: December 14, 2004
    Publication date: June 30, 2005
    Inventors: John Harrington, Robert Gelman, K. Vaynberg
  • Publication number: 20040020565
    Abstract: Chromate-free treatments and compositions, for applying a conversion or passivation coating to zinc coated metal surfaces. The compositions comprise a polyamidoamine/epihalohydrin polymer or cationic polyamine/epihalohydrin polymer component, fluoacid, H3PO4, and a film forming polymer latex component. The requisite metal surfaces are contacted by the compositions and dried. Rinsing is optional.
    Type: Application
    Filed: July 31, 2003
    Publication date: February 5, 2004
    Applicant: GE Betz, Inc.
    Inventors: Jeffrey I. Melzer, Andrea Keys, Michael T. Raab, Robert A. Gelman
  • Publication number: 20030199629
    Abstract: The present invention relates to aqueous compositions comprising component (A) which comprises at least one water-soluble component comprising at least one functional group that undergoes a crosslinking reaction, preferably upon drying and/or heating; and component (B) which comprises at least one film-forming material. In particular the composition is a coating composition comprises: (A) at least one polyamidoamine-epihalohydrin resin; and (B) at least one material selected from flexibilizing materials, crosslink inhibiters and combinations thereof in an amount sufficient to impart a cuttability value of less than about 15 to a substrate coated with the coating composition. Component (B) is preferably at least one polymer comprising repeating units derived from an alkyl halide having at least one double bond and an alkene, such as ethylene vinyl chloride.
    Type: Application
    Filed: January 13, 2003
    Publication date: October 23, 2003
    Inventors: Robert A. Gelman, Andrea Keys, Jeffrey I. Melzer
  • Patent number: 6586520
    Abstract: The present invention relates to aqueous compositions comprising component (A) which comprises at least one water-soluble component comprising at least one functional group that undergoes a crosslinking reaction, preferably upon drying and/or heating; and component (B) which comprises at least one film-forming material. In particular the composition is a coating composition comprises: (A) at least one polyamidoamine-epihalohydrin resin; and (B) at least one material selected from flexibilizing materials, crosslink inhibiters and combinations thereof in an amount sufficient to impart a cuttability value of less than about 15 to a substrate coated with the coating composition. Component (B) is preferably at least one polymer comprising repeating units derived from an alkyl halide having at least one double bond and an alkene, such as ethylene vinyl chloride.
    Type: Grant
    Filed: July 10, 2000
    Date of Patent: July 1, 2003
    Assignee: Hercules Incorporated
    Inventors: James Canorro, Robert A. Gelman, Matthew B. Howle, Andrea Keys, JoAnne Lefever, William W. Maslanka, Jeffrey I. Melzer, Kevin M. Mottern, Michael T. Raab, William Rodriquez, Richard A. Stuhrke, Jennifer E. Steed, Robert G. Szewczyk
  • Patent number: 5904808
    Abstract: A process of repulping paper a product comprising cellulose fibers, comprising forming an aqueous suspension of paper product to be repulped and an oxidizing agent comprising at least one persulfate salt, and maintaining the pH of the aqueous suspension in a range of from about 2.3 to about 6.5. The process is preferably conducted in the presence of preferred buffer systems. Compositions for conducting such processes are also provided.
    Type: Grant
    Filed: September 16, 1996
    Date of Patent: May 18, 1999
    Assignee: Hercules Incorporated
    Inventors: Robert A. Gelman, Josette S. Hyunh-Ba
  • Patent number: 4689408
    Abstract: Disclosed are novel sodium salt of carboxymethylcellulose (CMC) which are substantially nonfibrous, have a degree of substitution (D.S.) of 0.2 to 0.9 and an absorbency of at least 25 g. liquid/g. the novel CMC material, and are prepared from a cellulose furnish having a degree of polymerization (D.P.) of greater than 1,000; and to processes for preparing same. Owing to their high absorbency properties, they are particularly useful in the manufacture of disposable nonwoven products, such as adult incontinence pads, feminine hygiene products, disposable diapers and surgical dressings.
    Type: Grant
    Filed: July 7, 1986
    Date of Patent: August 25, 1987
    Assignee: Hercules Incorporated
    Inventors: Robert A. Gelman, Eleanor C. Hawkins
  • Patent number: 4650716
    Abstract: Disclosed are novel sodium salts of carboxymethylcellulose (CMC) which are substantially nonfibrous, have a degree of substitution (D.S.) of 0.2 to 0.9 and an absorbency of at least 25 g. liquid/g. the novel CMC material, and are prepared from a cellulose furnish having a degree of polymerization (D.P.) of greater than 1,000; and to processes for preparing same. Owing to their high absorbency properties, they are particularly useful in the manufacture of disposable nonwoven products, such as adult incontinence pads, feminine hygiene products, disposable diapers and surgical dressings.
    Type: Grant
    Filed: May 14, 1985
    Date of Patent: March 17, 1987
    Assignee: Hercules Incorporated
    Inventor: Robert A. Gelman