Patents by Inventor Pieter Gijsbert Weber

Pieter Gijsbert Weber 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).

  • Process for the acylation of amino alcohols
    Patent number: 6420604
    Abstract: The present invention discloses an improved process for the N-acylation of amino alcohols employing an organic acid in the form of an acid halogenide, wherein the acylation occurs in an organic solvent in the additional presence of water.
    Type: Grant
    Filed: January 7, 2000
    Date of Patent: July 16, 2002
    Assignee: Cosmoferm B.V.
    Inventors: Pieter Gijsbert Weber, Erik De Vroom
  • Phytosphingosine-based ceramide I analogs
    Patent number: 6054599
    Abstract: Novel phytosphingosine-based analogs of ceramide I, methods for the preparation of these novel compounds, cosmetic and pharmaceutical compositions containing such compounds, and methods for the use thereof are described.
    Type: Grant
    Filed: May 5, 1998
    Date of Patent: April 25, 2000
    Assignee: DSM N.V.
    Inventors: Pieter Gijsbert Weber, Johannes Wilhelmus Jacobus Lambers, Hein Simon Koger, Jan Verweij
  • Phytosphingosine-based ceramide I analogs
    Patent number: 5919960
    Abstract: The present invention describes phytospringosine-based analogs of ceramides I, as well as cosmetics and pharmaceutical compositions containing these novel compounds and their use.
    Type: Grant
    Filed: April 29, 1996
    Date of Patent: July 6, 1999
    Assignee: Gist-brocades, B.V.
    Inventors: Pieter Gijsbert Weber, Johannes Wilhelmus Jacobus Lambers, Hein Simon Koger, Jan Verweij
  • Diamine salts of clavulanic acid
    Patent number: 5821364
    Abstract: New diamine salts of clavulanic acid, pharmaceutical compositions comprising the same, and a new process using these diamine salts in the preparation of clavulanic acid and salts and esters thereof have been provided.
    Type: Grant
    Filed: November 14, 1994
    Date of Patent: October 13, 1998
    Assignee: Gist-Brocades N.V.
    Inventor: Pieter Gijsbert Weber
  • Diamine salts of clavulanic acid
    Patent number: 5760218
    Abstract: New diamine salts of clavulanic acid, pharmaceutical compositions comprising the same, and a new process using these diamine salts in the preparation of clavulanic acid and salts and esters thereof have been provided.
    Type: Grant
    Filed: May 31, 1995
    Date of Patent: June 2, 1998
    Assignee: Gist-Brocades N.V.
    Inventor: Pieter Gijsbert Weber