Patents by Inventor Carlos B. GUERRA

Carlos B. GUERRA 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).

  • Urethane urea acrylic cast sheet materials
    Patent number: 10934402
    Abstract: Urethane-urea-acrylic cast sheet materials are made from a reaction product of components including polyisocyanate compound having at least two isocyanate functional groups and optional polyol (or pre-reacted urethane prepolymer having at least two isocyanate functional groups), curative having at least two amine functional groups, acrylic monomer, and optional multifunctional monomer having a first functional group having an active hydrogen and a second functional group having at least one double bond. The urethane-urea-acrylic cast sheet materials exhibit excellent impact properties and desirable hardness while also maintaining optical properties such as low haze that can be comparable to that of conventional cast acrylic sheet.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: March 2, 2021
    Assignee: SPARTECH, LLC
    Inventors: Christopher A. Simoneau, Carlos B. Guerra
  • Urethane vinyl copolymers and impact resistant sheets made therefrom
    Patent number: 10239988
    Abstract: Copolymers comprising a polyurethane segment, a polyvinyl segment and a multifunctional monomer having first and second functional groups covalently bound to the polyurethane segment and polyvinyl segment, respectively, are disclosed. Cast sheets formed therefrom exhibit improved high impact resistance and similar optical properties as compared to polyvinyl cast sheets.
    Type: Grant
    Filed: February 3, 2015
    Date of Patent: March 26, 2019
    Assignee: Spartech LLC
    Inventors: Pavel E. Ilmenev, Carlos B. Guerra
  • URETHANE UREA ACRYLIC CAST SHEET MATERIALS
    Publication number: 20180142072
    Abstract: Urethane-urea-acrylic cast sheet materials are made from a reaction product of components including polyisocyanate compound having at least two isocyanate functional groups and optional polyol (or pre-reacted urethane prepolymer having at least two isocyanate functional groups), curative having at least two amine functional groups, acrylic monomer, and optional multifunctional monomer having a first functional group having an active hydrogen and a second functional group having at least one double bond. The urethane-urea-acrylic cast sheet materials exhibit excellent impact properties and desirable hardness while also maintaining optical properties such as low haze that can be comparable to that of conventional cast acrylic sheet.
    Type: Application
    Filed: November 21, 2017
    Publication date: May 24, 2018
    Inventors: Christopher A. Simoneau, Carlos B. Guerra
  • URETHANE VINYL COPOLYMERS AND IMPACT RESISTANT SHEETS MADE THEREFROM
    Publication number: 20170166684
    Abstract: Copolymers comprising a polyurethane segment, a polyvinyl segment and a multifunctional monomer having first and second functional groups covalently bound to the polyurethane segment and polyvinyl segment, respectively, are disclosed. Cast sheets formed therefrom exhibit improved high impact resistance and similar optical properties as compared to polyvinyl cast sheets.
    Type: Application
    Filed: February 3, 2015
    Publication date: June 15, 2017
    Inventors: Pavel E. ILMENEV, Carlos B. GUERRA