Patents by Inventor Walter Harvey Waddell

Walter Harvey Waddell 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).

  • Abrasion resistant transparent and colorable elastomeric compositions
    Patent number: 6710116
    Abstract: Transparent and colorable elastomeric compositions are provided. The transparent elastomeric compositions can be covulcanized with rubbers such as polybutadiene, polyisoprene, styrene-butadiene rubber, styrene-isoprene-butadiene rubber, isoprene-butadiene rubber, ethylene-propylene diene rubber or natural rubber and a processing aid. The colorable rubber compositions have sufficient properties to function as a reinforcing member in a shoe sole or automobile tire. Preferably, both the transparent and colorable elastomeric compositions include at least one copolymer of a C4 to C7 isoolefin and a para-alkylstyrene, silica and a high cis-polybutadiene rubber.
    Type: Grant
    Filed: October 18, 2000
    Date of Patent: March 23, 2004
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Walter Harvey Waddell, Robert Ryan Poulter
  • Transparent and colorable elastomeric compositions
    Patent number: 6624235
    Abstract: Transparent and colorable elastomeric compositions are provided. The transparent elastomeric compositions can be covulcanized with rubbers such as polybutadiene, polyisoprene, styrene-butadiene rubber, styrene-isoprene-butadiene rubber, isoprene-butadiene rubber, ethylene-propylene diene rubber or natural rubber. The colorable rubber compositions have sufficient properties to function as a reinforcing member in an automobile tire. Preferably, both the transparent and colorable elastomeric compositions include at least one copolymer of a C4 to C7 isoolefin and a para-alkylstyrene, silica and a coupling agent.
    Type: Grant
    Filed: December 15, 1998
    Date of Patent: September 23, 2003
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Walter Harvey Waddell, Robert Ryan Poulter, Kenneth Odell McElrath, John Edgar Rogers