Patents by Inventor Lonnie T. Spada

Lonnie T. Spada 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).

  • Methods of using pressure-sensitive adhesives
    Patent number: 5435879
    Abstract: Normally tacky, pressure sensitive adhesive compositions comprise one or more polymers containing pendant functional groups attached to a polymer backbone and having the formula: ##STR1## in which R.sub.
    Type: Grant
    Filed: November 7, 1990
    Date of Patent: July 25, 1995
    Assignee: Rohm and Haas Company
    Inventors: Gaylen M. Knutson, Paul J. Steinwand, Joseph J. Wilczynski, Lonnie T. Spada
  • Acetoacetoxy-alkyl acrylate-containing pressure sensitive adhesives manufactured articles
    Patent number: 5185212
    Abstract: Normally tacky, pressure sensitive adhesive compositions comprise one or more polymers having a T.sub.g of about 0.degree. C. or less containing at least about 40 weight percent polymerized, olefinically unsaturated carboxylic acid ester monomers and pendant functional groups attached to a polymer backbone and having the formula: ##STR1## in which R.sub.1 is a divalent organic radical at least 3 atoms in length, and X is organoacyl or cyano. Such polymers have markedly improved cohesive strength (shear holding value) with little or no detriment to adhesive tack or adhesion (peel resistnace), and these improvements are realized without the necessity of incorporating cross-linking monomers such as N-methylolamides or other cross-linking agents. Pressure sensitive adhesive, water-based emulsions containing such polymers and adhesive articles having at least a portion of one surface thereof coated with such adhesives are also provided.
    Type: Grant
    Filed: August 30, 1990
    Date of Patent: February 9, 1993
    Assignee: Rohm and Haas Company
    Inventors: Lonnie T. Spada, Joseph J. Wilczynski
  • Pressure sensitive adhesives and adhesive articles
    Patent number: 4759983
    Abstract: Normally tacky, pressure sensitive adhesive compositions comprise one or more polymers containing pendant functional groups attached to a polymer backbone and having the formula: ##STR1## in which R.sub.
    Type: Grant
    Filed: May 30, 1986
    Date of Patent: July 26, 1988
    Assignee: Union Oil Company of California
    Inventors: Gaylen M. Knutson, Paul J. Steinwand, Joseph J. Wilczynski, Lonnie T. Spada