Patents by Inventor Mark De Boer

Mark De Boer 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).

  • Patent number: 6334947
    Abstract: The invention pertains to a catalyst at least comprising a hydrogenation metal component and a swelling synthetic clay consisting of elemental clay platelets, with the average diameter of the clay platelets not exceeding 1 micron and the average degree of stacking of the clay platelets not exceeding 20 platelets per stack. The catalyst is especially suitable for the hydroprocessing of hydrocarbon feeds, the term “hydroprocessing” encompassing all processes in which a hydrocarbon feed is treated with hydrogen. The clays which are suitable for use in the catalyst according to the invention may be prepared as described in Netherlands patent application No. 9401433.
    Type: Grant
    Filed: May 6, 1997
    Date of Patent: January 1, 2002
    Assignee: Akzo Nobel NV
    Inventors: Mark De Boer, Eelco Titus Carel Vogt, Robertus Gerardus Leliveld, John Wilhelm Geus, Roland Jacobus Martinus Josephus Vogels
  • Patent number: 6315998
    Abstract: Methods for preventing or treating an antibody-mediated diease in a patient are presented, the methods comprising administration of a monoclonal antibody capable of binding to a human CD40 antigen located on the surface of a human B cell, wherein the binding of the antibody to the CD40 antigen prevents the growth or differentiation of the B cell. Monoclonal antibodies useful in these methods, and epitopes immunoreactive with such monoclonal antibodies are also presented.
    Type: Grant
    Filed: February 15, 2000
    Date of Patent: November 13, 2001
    Assignee: Chiron Corporation
    Inventors: Mark de Boer, Leah B. Conroy
  • Publication number: 20010026932
    Abstract: Disclosed are agonist anti-CD40 molecules, including monoclonal antibodies, which can bind to and stimulate professional and non-professional human antigen-presenting cells (“APCs”), enhance the stimulatory effect of CD40L on CD40 positive cells and/or induce phenotypical maturation of monocyte derived dendritic cells. Several such monoclonal antibodies are provided, and cell lines producing them have been deposited at the American Type Culture Collection.
    Type: Application
    Filed: February 1, 2001
    Publication date: October 4, 2001
    Inventors: David Thomas, Mark De Boer, Pieter C.J.M. Res, Peter J. Simons
  • Patent number: 6127299
    Abstract: The present invention relates to a process for preparing a catalyst suitable for the hydroprocessing of heavy hydrocarbon feeds, which process comprises the steps of(i) if necessary removing carbonaceous and sulphurous deposits from waste catalyst by subjecting the waste catalyst to a thermal treatment,(ii) grinding the waste catalyst obtained in step (i),(iii) mixing the ground material obtained in step (ii) with a binder and, optionally, additives, and(iv) shaping the mixture to form a new catalyst,wherein the loss on ignition of the catalyst composition mixture at any point in the steps (ii), (iii), and (iv) is not higher than 70%.The process according to the invention is suitable, int. al., for the production of ebullated bed catalysts. In that case, it is envisaged to incorporate a macroporous additive into the catalyst composition.
    Type: Grant
    Filed: October 22, 1996
    Date of Patent: October 3, 2000
    Inventors: Mark de Boer, Johannes Wilhelmus Maria Sonnemans, Pankaj Himatlal Desai, Jaap Enters
  • Patent number: 6071519
    Abstract: An immunotoxin molecule comprising an antibody specific for human CD 86 antigen located on the surface of a human cell, coupled to a toxin molecule or active fragment thereof, wherein the binding of the immunotoxin to the CD86 antigen results in the killing of CD86 expressing cell and pharmaceutical compositions and the use therefor to treat diseases of the immune system of warm-blooded animals.
    Type: Grant
    Filed: December 1, 1997
    Date of Patent: June 6, 2000
    Assignee: Innogenetics N.V.
    Inventors: Mark De Boer, Gijsberi De Gast
  • Patent number: 6056959
    Abstract: Methods for preventing or treating an antibody-mediated diease in a patient are presented, the methods comprising administration of a monoclonal antibody capable of binding to a human CD40 antigen located on the surface of a human B cell, wherein the binding of the antibody to the CD40 antigen prevents the growth or differentiation of the B cell. Monoclonal antibodies useful in these methods, and epitopes immunoreactive with such monoclonal antibodies are also presented.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: May 2, 2000
    Assignee: Chiron Corporation
    Inventors: Mark de Boer, Leah B Conroy
  • Patent number: 6030915
    Abstract: The present invention relates to a process for preparing a hydroprocessing catalyst comprising the steps of subjecting a spent hydroprocessing catalyst comprising carbonaceous and sulphurous deposits to a thermal treatment to remove at least part of said deposits, grinding the thus obtained spent catalyst, mixing the ground hydroprocessing catalyst with at least one additive, and shaping the mixture of additive and ground hydroprocessing catalyst to form particles of a new hydroprocessing catalyst, with the spent hydroprocessing catalyst being subjected to a high-temperature calcination step carried out at a temperature in the range of 550-1000.degree. C. for a period sufficient to increase the MPD of the spent catalyst by at least 0.5 nm.The process according to the invention is particularly suitable for preparing ebullated bed catalysts from spent hydroprocessing catalysts.
    Type: Grant
    Filed: March 10, 1997
    Date of Patent: February 29, 2000
    Assignee: Akzo Nobel N.V.
    Inventor: Mark de Boer
  • Patent number: 6004552
    Abstract: Methods for preventing or treating an antibody-mediated diease in a patient are presented, the methods comprising administration of a monoclonal antibody capable of binding to a human CD40 antigen located on the surface of a human B cell, wherein the binding of the antibody to the CD40 antigen prevents the growth or differentiation of the B cell. Monoclonal antibodies useful in these methods, and epitopes immunoreactive with such monoclonal antibodies are also presented.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: December 21, 1999
    Assignee: Chiron Corporation
    Inventors: Mark de Boer, Leah B Conroy
  • Patent number: 5874082
    Abstract: Methods for preventing or treating an antibody-mediated disease in patient are presented, the methods comprising administration of a humanized monoclonal antibody or fragment thereof that is capable of binding to a human CD40 antigen located on the surface of a human B cell, wherein the binding of the antibody to the CD40 antigen prevents the growth or differentiation of the B cell. Humanized monoclonal antibodies and fragments useful in these methods are also presented.
    Type: Grant
    Filed: February 23, 1996
    Date of Patent: February 23, 1999
    Assignee: Chiron Corporation
    Inventor: Mark de Boer
  • Patent number: 5869050
    Abstract: Methods for causing T cell anergy, treating allograft transplant rejection, treating graft versus host disease, and preventing or treating rheumatoid arthritis are presented, the methods comprising co-administration of a molecule that binds to the B7 antigen and an immunosuppressive agent.
    Type: Grant
    Filed: February 9, 1993
    Date of Patent: February 9, 1999
    Assignee: Chiron Corporation
    Inventors: Mark de Boer, Leah B. Conroy
  • Patent number: 5747034
    Abstract: Anti-B7-1 antibodies or other B7-1 ligands may be used to prevent or treat a T-cell-mediated immune system disease in a patient or to induce antigen-specific tolerance.The anti-B7-1 antibodies may be used to cause T cell anergy, treat allograft transplant rejection, treat graft versus host disease, and prevent or treat rheumatoid arthritis. An immunosuppressive agent is co-administered with the antibody.
    Type: Grant
    Filed: February 18, 1994
    Date of Patent: May 5, 1998
    Assignee: Chiron Corporation
    Inventors: Mark de Boer, Leah B. Conroy
  • Patent number: 5677165
    Abstract: Methods for preventing or treating an antibody-mediated diease in a patient are presented, the methods comprising administration of a monoclonal antibody capable of binding to a human CD40 antigen located on the surface of a human B cell, wherein the binding of the antibody to the CD40 antigen prevents the growth or differentiation of the B cell. Monoclonal antibodies useful in these methods, and epitopes immunoreactive with such monoclonal antibodies are also presented.
    Type: Grant
    Filed: May 28, 1993
    Date of Patent: October 14, 1997
    Assignee: Chiron Corporation
    Inventors: Mark de Boer, Leah B. Conroy
  • Patent number: 5397703
    Abstract: The present invention relates to a method of generating antibodies directed against cell surface antigens. The method uses as immunogen recombinant insect cells into which have been transfected coding regions for a molecule containing a cell surface antigen. Host animals are immunized with these transfected insect cells to generate antibodies directed against the cell surface antigen. Antibody-producing cells from the host animal are used to generate monoclonal antibody-producing hybridoma cells. Sera and hybridoma supernatants can be tested for the presence of antibodies against the surface antigen, using the transfected cells in a screening assay.
    Type: Grant
    Filed: July 9, 1992
    Date of Patent: March 14, 1995
    Assignee: Cetus Oncology Corporation
    Inventors: Mark De Boer, Leah B. Conroy