Patents by Inventor Jean-Philippe Hallet

Jean-Philippe Hallet 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).

  • Bituminous compositions containing coupled copolymers
    Patent number: 6235817
    Abstract: The present invention relates to bituminous compositions used for roofing and waterproofing membranes or material comprising asymmetrical coupled polyvinyl aromatic-polydiene block copolymers having improved physical properties over broader ranges of service temperatures than those obtained from bituminous compositions prepared with symmetrical block copolymers of similar type. The asymmetry of the copolymer which is characterised by polyvinyl aromatic endblocks of at least two different molecular weights, one high and one low, ensures improved physical performance to roofing and waterproofing membranes made from such compositions.
    Type: Grant
    Filed: September 13, 1999
    Date of Patent: May 22, 2001
    Assignee: Fina Research, S.A.
    Inventors: Bernard Haveaux, Emmanuel Lanza, Jean-Philippe Hallet, André Noiret
  • Process for preparing bitumen/rubber compositions
    Patent number: 6025418
    Abstract: An elastomer is blended with bitumen, an alkaline compound is then added which is soluble in the bitumen, and to this mixture is added 0.01 to 0.1% by weight of a mixture of vulcanizing agents comprising elemental sulphur and a sulphur-containing derivative of the form: ##STR1## where R.sub.1 and R.sub.2 are C.sub.1 to C.sub.4 alkyl radicals or, together R.sub.1 and R.sub.2 have the formula ##STR2## and where M, which is optional, is Zn, Ba or Cu.
    Type: Grant
    Filed: February 13, 1997
    Date of Patent: February 15, 2000
    Assignee: Fina Research, S.A.
    Inventors: Frans Maurice Joseph Defoor, Jean-Philippe Hallet, Thierry Christian Coupin
  • Bituminous compositions containing linear copolymers
    Patent number: 6008277
    Abstract: The present invention relates to bituminous compositions used for roofing and waterproofing membranes or material comprising asymmetrical linear polyvinyl aromatic-polydiene block copolymers having improved physical properties over broader ranges of service temperatures than those obtained from bituminous compositions prepared with symmetrical block copolymers of similar type.The asymmetry of the copolymer which is characterised by polyvinyl aromatic endblocks of at least two different molecular weights, one high and one low, ensures improved physical performance to roofing and waterproofing membranes made from such compositions.
    Type: Grant
    Filed: January 8, 1998
    Date of Patent: December 28, 1999
    Assignee: Fina Research, S.A.
    Inventors: Bernard Haveaux, Emmanuel Lanza, Jean-Philippe Hallet, Andre Noiret
  • Bituminous compositions containing linear copolymers
    Patent number: RE37581
    Abstract: The present invention relates to bituminous compositions used for roofing and waterproofing membranes or material comprising asymmetrical linear polyvinyl aromatic-polydiene block copolymers having improved physical properties over broader ranges of service temperatures than those obtained from bituminous compositions prepared with symmetrical block copolymers of similar type. The asymmetry of the copolymer which is characterised by polyvinyl aromatic endblocks of at least two different molecular weights, one high and one low, ensures improved physical performance to roofing and waterproofing membranes made from such compositions.
    Type: Grant
    Filed: August 1, 2000
    Date of Patent: March 12, 2002
    Assignee: Fina Research, S.A.
    Inventors: Bernard Haveaux, Emmanuel Lanza, Jean-Philippe Hallet, André Noiret