Patents by Inventor Marfi Ito

Marfi Ito 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).

  • MULTIFUNCTIONAL SULFUR-CONTAINING POLYMERS, COMPOSITIONS THEREOF AND METHODS OF USE
    Publication number: 20150018550
    Abstract: Disclosed are multifunctional sulfur-containing polymers that are the reaction products of a sulfur-containing diol, a polyol containing at least three hydroxyl groups per polyol molecule, and an aldehyde, a ketone, or a combination thereof. Sealant compositions comprising the multifunctional sulfur-containing polymers are also disclosed.
    Type: Application
    Filed: September 29, 2014
    Publication date: January 15, 2015
    Inventors: Steven J. Hobbs, Gregory J. McCollum, Juexiao Cai, Marfi Ito, Lawrence G. Anderson, Renhe Lin
  • MICHAEL ADDITION CURING CHEMISTRIES FOR SULFUR-CONTAINING POLYMER COMPOSITIONS EMPLOYING BIS(SULFONYL)ALKANOLS
    Publication number: 20140378649
    Abstract: The use of Michael addition curing chemistries in compositions comprising sulfur-containing polymers such as polythioethers and polysulfides useful in aerospace sealant applications are disclosed. Sulfur-containing adducts comprising terminal Michael acceptor groups are also disclosed. In particular, sulfur-containing polymers and sulfur containing Michael acceptor adducts having terminal 1-(ethylenesulfonyl)-n-(vinylsulfonyl)alkanol groups are disclosed.
    Type: Application
    Filed: June 21, 2013
    Publication date: December 25, 2014
    Inventors: JUEXIAO CAI, LAWRENCE G. ANDERSON, MARFI ITO, RENHE LIN
  • MICHAEL ADDITION CURING CHEMISTRIES FOR SULFUR-CONTAINING POLYMER COMPOSITIONS
    Publication number: 20140357811
    Abstract: The use of Michael addition curing chemistries in compositions comprising sulfur-containing polymers such as polythioethers and polysulfides useful in aerospace sealant applications are disclosed. Sulfur-containing adducts comprising terminal Michael acceptor groups are also disclosed.
    Type: Application
    Filed: August 19, 2014
    Publication date: December 4, 2014
    Inventors: Lawrence G. Anderson, Juexlao Cai, Marfi Ito, Raquel Keledjian, Renhe Lin
  • MICHAEL ADDITION CURING CHEMISTRIES FOR SULFUR-CONTAINING POLYMER COMPOSITIONS
    Publication number: 20140357812
    Abstract: The use of Michael addition curing chemistries in compositions comprising sulfur-containing polymers such as polythioethers and polysulfides useful in aerospace sealant applications are disclosed. Sulfur-containing adducts comprising terminal Michael acceptor groups are also disclosed.
    Type: Application
    Filed: August 19, 2014
    Publication date: December 4, 2014
    Inventors: Lawrence G. Anderson, Juexiao Cai, Marfi Ito, Raquel Keledjian, Renhe Lin
  • Multifunctional sulfur-containing polymers, compositions thereof and methods of use
    Patent number: 8877887
    Abstract: Disclosed are multifunctional sulfur-containing polymers that are the reaction products of a sulfur-containing diol, a polyol containing at least three hydroxyl groups per polyol molecule, and an aldehyde, a ketone, or a combination thereof. Sealant compositions comprising the multifunctional sulfur-containing polymers are also disclosed.
    Type: Grant
    Filed: February 11, 2014
    Date of Patent: November 4, 2014
    Assignee: PRC De Soto International, Inc.
    Inventors: Steven J. Hobbs, Gregory J. McCollum, Juexiao Cai, Marfi Ito, Lawrence G. Anderson, Renhe Lin
  • Michael addition curing chemistries for sulfur-containing polymer compositions
    Patent number: 8871896
    Abstract: The use of Michael addition curing chemistries in compositions comprising sulfur-containing polymers such as polythioethers and polysulfides useful in aerospace sealant applications are disclosed. Sulfur-containing adducts comprising terminal Michael acceptor groups are also disclosed.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: October 28, 2014
    Assignee: PRC DeSoto International, Inc.
    Inventors: Lawrence G. Anderson, Juexiao Cai, Marfi Ito, Raquel Keledjian, Renhe Lin
  • POLYUREA COMPOSITIONS AND METHODS OF USE
    Publication number: 20140314960
    Abstract: Disclosed are polyurea compositions comprising the reaction products of a polyformal-isocyanate prepolymer and a curing agent comprising an amine. The compositions are useful as sealants in aerospace applications.
    Type: Application
    Filed: June 30, 2014
    Publication date: October 23, 2014
    Inventors: NAGARAJAN SRIVATSAN, ALFREDO REYES, SEAN MANION, JUEXIAO CAI, MARFI ITO, RENHE LIN
  • FLEXIBLE POLYAMINES, FLEXIBLE AMINE-TERMINATED ADDUCTS, COMPOSITIONS THEREOF AND METHODS OF USE
    Publication number: 20140295088
    Abstract: Disclosed are flexible polyamines, flexible amine-terminated polyformal adducts, flexible-amine-terminated polythioether adducts, compositions comprising flexible polyamines and isocyanate-terminated prepolymers, and compositions comprising flexible amine-terminated adducts and isocyanate-terminated prepolymers. Uses of the compositions as sealants, and particularly as aerospace sealants, are also disclosed.
    Type: Application
    Filed: June 18, 2014
    Publication date: October 2, 2014
    Inventors: Stephen J. Hobbs, Marfi Ito, Juexiao Cai, Chandra Rao, Renhe Lin
  • Flexible polyamines, flexible amine-terminated adducts, compositions thereof and methods of use
    Patent number: 8816044
    Abstract: Disclosed are flexible polyamines, flexible amine-terminated polyformal adducts, flexible-amine-terminated polythioether adducts, compositions comprising flexible polyamines and isocyanate-terminated prepolymers, and compositions comprising flexible amine-terminated adducts and isocyanate-terminated prepolymers. Uses of the compositions as sealants, and particularly as aerospace sealants, are also disclosed.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: August 26, 2014
    Assignee: PRC DeSoto International, Inc
    Inventors: Stephen J. Hobbs, Marfi Ito, Juexiao Cai, Chandra Rao, Renhe Lin
  • Polyurea compositions and methods of use
    Patent number: 8802790
    Abstract: Disclosed are polyurea compositions comprising the reaction products of a polyformal-isocyanate prepolymer and a curing agent comprising an amine. The compositions are useful as sealants in aerospace applications.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: August 12, 2014
    Assignee: PRC-DeSoto International, Inc.
    Inventors: Steven J. Hobbs, Juexiao Cai, Marfi Ito, Renhe Lin
  • MULTIFUNCTIONAL SULFUR-CONTAINING POLYMERS, COMPOSITIONS THEREOF AND METHODS OF USE
    Publication number: 20140206866
    Abstract: Disclosed are multifunctional sulfur-containing polymers that are the reaction products of a sulfur-containing diol, a polyol containing at least three hydroxyl groups per polyol molecule, and an aldehyde, a ketone, or a combination thereof. Sealant compositions comprising the multifunctional sulfur-containing polymers are also disclosed.
    Type: Application
    Filed: February 11, 2014
    Publication date: July 24, 2014
    Inventors: Steven J. Hobbs, Gregory J. McCollum, Juexiao Cai, Marfi Ito, Lawrence G. Anderson, Renhe Lin
  • POLYUREA COMPOSITIONS AND METHODS OF USE
    Publication number: 20140171587
    Abstract: Disclosed are polyurea compositions comprising the reaction products of a polyformal-isocyanate prepolymer and a curing agent comprising an amine. The compositions are useful as sealants in aerospace applications.
    Type: Application
    Filed: February 20, 2014
    Publication date: June 19, 2014
    Inventors: Steven J. Hobbs, Juexiao Cai, Marfi Ito, Renhe Lin
  • Polyurea compositions and methods of use
    Patent number: 8729193
    Abstract: Disclosed are polyurea compositions comprising the reaction products of a polyformal-isocyanate prepolymer and a curing agent comprising an amine. The compositions are useful as sealants in aerospace applications.
    Type: Grant
    Filed: July 3, 2013
    Date of Patent: May 20, 2014
    Assignee: PRC DeSoto International, Inc.
    Inventors: Stephen J. Hobbs, Juexiao Cai, Marfi Ito, Renhe Lin
  • Multifunctional sulfur-containing polymers, compositions thereof and methods of use
    Patent number: 8729216
    Abstract: Disclosed are multifunctional sulfur-containing polymers that are the reaction products of a sulfur-containing diol, a polyol containing at least three hydroxyl groups per polyol molecule, and an aldehyde, a ketone, or a combination thereof. Sealant compositions comprising the multifunctional sulfur-containing polymers are also disclosed.
    Type: Grant
    Filed: March 6, 2012
    Date of Patent: May 20, 2014
    Assignee: PRC DeSoto International, Inc.
    Inventors: Stephen J. Hobbs, Gregory J. McCollum, Juexiao Cai, Marfi Ito, Lawrence G. Anderson, Renhe Lin
  • MICHAEL ADDITION CURING CHEMISTRIES FOR SULFUR-CONTAINING POLYMER COMPOSITIONS
    Publication number: 20130345371
    Abstract: The use of Michael addition curing chemistries in compositions comprising sulfur-containing polymers such as polythioethers and polysulfides useful in aerospace sealant applications are disclosed. Sulfur-containing adducts comprising terminal Michael acceptor groups are also disclosed.
    Type: Application
    Filed: June 21, 2012
    Publication date: December 26, 2013
    Applicant: PRC-DeSoto International, Inc.
    Inventors: Lawrence G. Anderson, Juexiao Cai, Marfi Ito, Raquel Keledjian, Renhe Lin
  • POLYUREA COMPOSITIONS AND METHODS OF USE
    Publication number: 20130296490
    Abstract: Disclosed are polyurea compositions comprising the reaction products of a polyformal-isocyanate prepolymer and a curing agent comprising an amine. The compositions are useful as sealants in aerospace applications.
    Type: Application
    Filed: July 3, 2013
    Publication date: November 7, 2013
    Inventors: Stephen J. Hobbs, Juexiao Cai, Marfi Ito, Renhe Lin
  • Polyurea compositions and methods of use
    Patent number: 8507617
    Abstract: Disclosed are polyurea compositions comprising the reaction products of a polyformal-isocyanate prepolymer and a curing agent comprising an amine. The compositions are useful as sealants in aerospace applications.
    Type: Grant
    Filed: March 18, 2011
    Date of Patent: August 13, 2013
    Assignee: PRC-DeSoto International, Inc.
    Inventors: Stephen J. Hobbs, Juexiao Cai, Marfi Ito, Renhe Lin
  • Thioethers, methods for their preparation, and compositions including such thioethers
    Patent number: 8466220
    Abstract: Disclosed are thioethers, methods for preparing such thioethers, and curable compositions, such as coating and sealant compositions, that include such thioethers. The thioethers can be the reaction product of (a) an alpha, omega dihalo organic compound, (b) a metal hydrosulfide and (c) a metal hydroxide.
    Type: Grant
    Filed: March 30, 2010
    Date of Patent: June 18, 2013
    Assignee: PRC DeSoto International, Inc
    Inventors: Chandra B. Rao, Juexiao Cai, Marfi Ito, John Gilmore
  • SULFUR-CONTAINING POLYUREAS AND METHODS OF USE
    Publication number: 20130079485
    Abstract: Disclosed are sulfur-containing polyurea compositions and methods of using the compositions as sealants, particularly as low specific-gravity aerospace sealants.
    Type: Application
    Filed: September 22, 2011
    Publication date: March 28, 2013
    Applicant: PRC-DeSoto International, Inc.
    Inventors: Juexiao Cai, Stephen J. Hobbs, Marfi Ito, Scott Moravek, Renhe Lin
  • FLEXIBLE POLYAMINES, FLEXIBLE AMINE-TERMINATED ADDUCTS, COMPOSITIONS THEREOF AND METHODS OF USE
    Publication number: 20130071571
    Abstract: Disclosed are flexible polyamines, flexible amine-terminated polyformal adducts, flexible-amine-terminated polythioether adducts, compositions comprising flexible polyamines and isocyanate-terminated prepolymers, and compositions comprising flexible amine-terminated adducts and isocyanate-terminated prepolymers. Uses of the compositions as sealants, and particularly as aerospace sealants, are also disclosed.
    Type: Application
    Filed: September 21, 2011
    Publication date: March 21, 2013
    Applicant: PRC DeSoto International, Inc.
    Inventors: Stephen J. Hobbs, Marfi Ito, Juexiao Cai, Chandra Rao, Renhe Lin