Patents by Inventor Margaret Ann Burns Clawson

Margaret Ann Burns Clawson 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).

  • Articles prepared from controlled distribution block copolymers
    Patent number: 7847022
    Abstract: The present invention relates to articles prepared from novel anionic block copolymers of mono alkenyl arenes and conjugated dienes, and to blends of such block copolymers with other polymers. The block copolymers have mono alkenyl arene end blocks and controlled distribution blocks of mono alkenyl arenes and conjugated dienes. The block copolymer may be blended with at least one other polymer selected from the group consisting of olefin polymers, styrene polymers, amorphous resins and engineering thermoplastic resins.
    Type: Grant
    Filed: February 6, 2003
    Date of Patent: December 7, 2010
    Assignee: Kraton Polymers U.S. LLC
    Inventors: Kathryn Wright, Dale Lee Handlin, Jr., Carl Lesley Willis, Margaret Ann Burns Clawson, Hendrik de Groot, Huan Yang, Keith E. Eiden
  • Articles prepared from hydrogenated controlled distribution block copolymers
    Patent number: 7267855
    Abstract: The present invention relates to articles prepared from novel anionic block copolymers of mono alkenyl arenes and conjugated dienes, and to blends of such block copolymers with other polymers. The block copolymers are selectively hydrogenated and have mono alkenyl arene end blocks and controlled distribution blocks of mono alkenyl arenes and conjugated dienes. The block copolymer may be blended with at least one other polymer selected from the group consisting of olefin polymers, styrene polymers, amorphous resins and engineering thermoplastic resins.
    Type: Grant
    Filed: February 6, 2003
    Date of Patent: September 11, 2007
    Assignee: Kraton Polymers U.S. LLC
    Inventors: Dale Lee Handlin, Jr., Carl Lesley Willis, Margaret Ann Burns Clawson, Hendrik de Groot, Keith Edward Eiden
  • Articles prepared from hydrogenated block copolymers
    Patent number: 7001956
    Abstract: The present invention relates to articles prepared from novel anionic block copolymers of mono alkenyl arenes and conjugated dienes, and to blends of such block copolymers with other polymers. The block copolymers are selectively hydrogenated and have mono alkenyl arene end blocks and conjugated diene mid blocks. The block copolymer may be blended with at least one other polymer selected from the group consisting of olefin polymers, styrene polymers, amorphous resins and engineering thermoplastic resins.
    Type: Grant
    Filed: June 4, 2003
    Date of Patent: February 21, 2006
    Assignee: Kraton Polymers U.S. LLC
    Inventors: Dale Lee Handlin, Jr., Carl Lesley Willis, Hendrik de Groot, Margaret Ann Burns Clawson, Gert Joly, Catherine Maris, Lie Djiauw
  • Articles prepared from hydrogenated block copolymers
    Publication number: 20030225209
    Abstract: The present invention relates to articles prepared from novel anionic block copolymers of mono alkenyl arenes and conjugated dienes, and to blends of such block copolymers with other polymers. The block copolymers are selectively hydrogenated and have mono alkenyl arene end blocks and conjugated diene mid blocks. The block copolymer may be blended with at least one other polymer selected from the group consisting of olefin polymers, styrene polymers, amorphous resins and engineering thermoplastic resins.
    Type: Application
    Filed: June 4, 2003
    Publication date: December 4, 2003
    Inventors: Dale Lee Handlin, Carl Lesley Willis, Hendrik de Groot, Margaret Ann Burns Clawson, Gert Joly, Catherine Maris, Lie Djiauw
  • Elastomeric articles prepared from controlled distribution block copolymers
    Publication number: 20030181584
    Abstract: The present invention relates to elastomeric articles prepared from novel anionic block copolymers of mono alkenyl arenes and conjugated dienes, and to blends of such block copolymers with other polymers. The block copolymers are selectively hydrogenated and have mono alkenyl arene end blocks and controlled distribution blocks of mono alkenyl arenes and conjugated dienes. The block copolymer may be blended with at least one other polymer selected from the group consisting of olefin polymers, styrene polymers, amorphous resins, and engineering thermoplastic resins.
    Type: Application
    Filed: July 31, 2002
    Publication date: September 25, 2003
    Applicant: Kraton Polymers U.S. LLC
    Inventors: Dale Lee Handlin,, Carl Lesley Willis, Margaret Ann Burns Clawson, Hendrik De Groot, Keith Edward Eiden
  • Articles prepared from hydrogenated controlled distribution block copolymers
    Publication number: 20030181585
    Abstract: The present invention relates to articles prepared from novel anionic block copolymers of mono alkenyl arenes and conjugated dienes, and to blends of such block copolymers with other polymers. The block copolymers are selectively hydrogenated and have mono alkenyl arene end blocks and controlled distribution blocks of mono alkenyl arenes and conjugated dienes. The block copolymer may be blended with at least one other polymer selected from the group consisting of olefin polymers, styrene polymers, amorphous resins and engineering thermoplastic resins.
    Type: Application
    Filed: February 6, 2003
    Publication date: September 25, 2003
    Inventors: Dale Lee Handlin, Carl Lesley Willis, Margaret Ann Burns Clawson, Hendrik de Groot, Keith Edward Eiden
  • Articles prepared from controlled distribution block copolymers
    Publication number: 20030166776
    Abstract: The present invention relates to articles prepared from novel anionic block copolymers of mono alkenyl arenes and conjugated dienes, and to blends of such block copolymers with other polymers. The block copolymers have mono alkenyl arene end blocks and controlled distribution blocks of mono alkenyl arenes and conjugated dienes. The block copolymer may be blended with at least one other polymer selected from the group consisting of olefin polymers, styrene polymers, amorphous resins and engineering thermoplastic resins.
    Type: Application
    Filed: February 6, 2003
    Publication date: September 4, 2003
    Inventors: Kathryn Wright, Dale Lee Handlin, Carl Lesley Willis, Margaret Ann Burns Clawson, Hendrik de Groot, Huan Yang, Keith E. Eiden
  • Thermofusible elastomer compositions
    Patent number: 6072004
    Abstract: The present invention provides a thermofusible elastomer composition comprising:(a) 100 phr of a selectively hydrogenated block copolymer component comprising an A'B' block copolymer and a multiblock copolymer having at least two end blocks A and at least one mid block B wherein the A' and A blocks are monoalkenyl arene polymer blocks and the B' and B blocks are substantially completely hydrogenated conjugated diene polymer blocks, the number average molecular weight of the A' and A blocks are between about 3,000 and about 7,000 and the monoalkenyl arene content of the multiblock copolymer is between about 7% and about 22% by weight;(b) 20 to 50 phr of at least one high melt flow polyolefin;(c) 0 to 19 phr of a plasticizing oil selected from naphthenic oils and paraffinic oils; and(d) 0 to 40 phr of at least one poly(conjugated diene) block compatible resin wherein the elastomer composition has a particle size of 1400 .mu.m or less.This composition is used in low shear processes.
    Type: Grant
    Filed: November 25, 1998
    Date of Patent: June 6, 2000
    Assignee: Shell Oil Company
    Inventors: Peter Migchels, Margaret Ann Burns Clawson