Patents by Inventor Bert Steffens

Bert Steffens 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: 7118880
    Abstract: In vitro methods for qualitative screening and/or quantitative determination of the functional activity of components of the Protein C anticoagulant pathway of blood coagulation are described. The methods entail measuring the conversion rate of a substrate by an enzyme, the activity of which is related to the Protein C anticoagulant activity, in a blood sample of a human comprising coagulation factors and said substrate, after at least partial activation of coagulation through the intrinsic, extrinsic or common pathway and triggering coagulation by adding calcium ions; and comparing said conversion rate with the conversion rate of a normal human blood sample determined in the same way. The methods include the addition of additional metal ions to the sample to enhance activity, sensitivity and resolution. Kits and reagents for use in the methods are also provided.
    Type: Grant
    Filed: May 28, 2004
    Date of Patent: October 10, 2006
    Assignee: Instrumentation Laboratory SpA
    Inventors: Bert Steffen Rosén, Christina Maria Yvonne Hall
  • Publication number: 20040235078
    Abstract: In vitro methods for qualitative screening and/or quantitative determination of the functional activity of components of the Protein C anticoagulant pathway of blood coagulation are described. The methods entail measuring the conversion rate of a substrate by an enzyme, the activity of which is related to the Protein C anticoagulant activity, in a blood sample of a human comprising coagulation factors and said substrate, after at least partial activation of coagulation through the intrinsic, extrinsic or common pathway and triggering coagulation by adding calcium ions; and comparing said conversion rate with the conversion rate of a normal human blood sample determined in the same way. The methods include the addition of additional metal ions to the sample to enhance activity, sensitivity and resolution. Kits and reagents for use in the methods are also provided.
    Type: Application
    Filed: May 28, 2004
    Publication date: November 25, 2004
    Applicant: Instrumentation Laboratory Company
    Inventors: Bert Steffen Rosen, Christina Maria Yvonne Hall
  • Patent number: 6800450
    Abstract: In vitro methods for qualitative screening and/or quantitative determination of the functional activity of components of the Protein C anticoagulant pathway of blood coagulation are described. The methods entail measuring the conversion rate of a substrate by an enzyme, the activity of which is related to the Protein C anticoagulant activity, in a blood sample of a human comprising coagulation factors and said substrate, after at least partial activation of coagulation through the intrinsic, extrinsic or common pathway and triggering coagulation by adding calcium ions; and comparing said conversion rate with the conversion rate of a normal human blood sample determined in the same way. The methods include the addition of additional metal ions to the sample to enhance activity, sensitivity and resolution. Kits and reagents for use in the methods are also provided.
    Type: Grant
    Filed: December 30, 2002
    Date of Patent: October 5, 2004
    Assignee: Instrumentation Laboratory, S.p.A.
    Inventors: Bert Steffen Rosén, Christina Maria Yvonne Hall
  • Patent number: 6730490
    Abstract: In vitro methods for qualitative screening and/or quantitative determination of the functional activity of components of the Protein C anticoagulant pathway of blood coagulation are described. The methods entail measuring the conversion rate of a substrate by an enzyme, the activity of which is related to the Protein C anticoagulant activity, in a blood sample of a human comprising coagulation factors and said substrate, after at least partial activation of coagulation through the intrinsic, extrinsic or common pathway and triggering coagulation by adding calcium ions; and comparing said conversion rate with the conversion rate of a normal human blood sample determined in the same way. The methods include the addition of additional metal ions to the sample to enhance activity, sensitivity and resolution. Kits and reagents for use in the methods are also provided.
    Type: Grant
    Filed: January 16, 2002
    Date of Patent: May 4, 2004
    Assignee: Instrumentation Laboratory, S.p.A.
    Inventors: Bert Steffen Rosén, Christina Maria Yvonne Hall
  • Publication number: 20030199014
    Abstract: In vitro methods for qualitative screening and/or quantitative determination of the functional activity of components of the Protein C anticoagulant pathway of blood coagulation are described. The methods entail measuring the conversion rate of a substrate by an enzyme, the activity of which is related to the Protein C anticoagulant activity, in a blood sample of a human comprising coagulation factors and said substrate, after at least partial activation of coagulation through the intrinsic, extrinsic or common pathway and triggering coagulation by adding calcium ions; and comparing said conversion rate with the conversion rate of a normal human blood sample determined in the same way. The methods include the addition of additional metal ions to the sample to enhance activity, sensitivity and resolution. Kits and reagents for use in the methods are also provided.
    Type: Application
    Filed: December 30, 2002
    Publication date: October 23, 2003
    Inventors: Bert Steffen Rosen, Christina Maria Yvonne Hall
  • Publication number: 20020115127
    Abstract: In vitro methods for qualitative screening and/or quantitative determination of the functional activity of components of the Protein C anticoagulant pathway of blood coagulation are described. The methods entail measuring the conversion rate of a substrate by an enzyme, the activity of which is related to the Protein C anticoagulant activity, in a blood sample of a human comprising coagulation factors and said substrate, after at least partial activation of coagulation through the intrinsic, extrinsic or common pathway and triggering coagulation by adding calcium ions; and comparing said conversion rate with the conversion rate of a normal human blood sample determined in the same way. The methods include the addition of additional metal ions to the sample to enhance activity, sensitivity and resolution. Kits and reagents for use in the methods are also provided.
    Type: Application
    Filed: January 16, 2002
    Publication date: August 22, 2002
    Inventors: Bert Steffen Rosen, Christina Maria Yvonne Hall
  • Patent number: 6395501
    Abstract: In vitro methods for qualitative screening and quantitative determination of the functional activity of components of the Protein C anticoagulant pathway of the blood coagulation system are provided. The methods entail providing a blood sample to be analyzed, activating the coagulation cascade, triggering coagulation by adding calcium ions, adding metal ions selected from the group consisting of divalent metal ions and monovalent copper ions at a concentration that enhances the anticoagulant activity of the Protein C anticoagulant pathway, adding an exogenous substrate for an enzyme related to Protein C anticoagulant activity, measuring the conversion rate of a the exogenous substrate by the enzyme, and comparing the conversion rate of the substrate in blood sample to be analyzed with the conversion rate the substrate in a normal blood sample.
    Type: Grant
    Filed: March 19, 1999
    Date of Patent: May 28, 2002
    Assignee: Instrumentation Laboratory, S.p.A.
    Inventors: Bert Steffen Rosén, Christina Maria Yvonne Hall
  • Patent number: 4664320
    Abstract: Sanitary articles formed of cellulose flock and non-flock carriers or covers are shredded by rotating entrainers, which are arranged in an enclosed housing. The cellulose flock thus separated is removed from the housing under suction through a sieve which only allow the cellulose flock through. The removal is effected before the covers have been shredded to such an extent that they pass through the sieve. The shredded cover material is then removed separately.
    Type: Grant
    Filed: November 13, 1984
    Date of Patent: May 12, 1987
    Inventor: Bert Steffens
  • Patent number: 4500040
    Abstract: Sanitary articles formed of cellulose flock and non-flock carriers or covers are shredded by rotating entrainers, which are arranged in an enclosed housing. The cellulose flock thus separated is removed from the housing under suction through a sieve which only allow the cellulose flock through. The removal is effected before the covers have been shredded to such an extent that they pass through the sieve. The shredded cover material is then removed separately.
    Type: Grant
    Filed: June 10, 1982
    Date of Patent: February 19, 1985
    Inventor: Bert Steffens
  • Patent number: 4303501
    Abstract: There is provided a process for the continuous separation of discarded hygiene articles into their components, namely flock and/or cut absorbent materials on the one hand and sheet coverings on the other comprising first tearing the discarded hygiene articles into large pieces and then conducting the pieces over an oscillating sieve surface, preferably over an oscillating sieve device having decreasing mesh widths with the smallest mesh width being so selected that the flocculent and/or cut absorbent material still can fall through while the large pieces of torn covering are always carried off as sieve residues.
    Type: Grant
    Filed: October 9, 1979
    Date of Patent: December 1, 1981
    Inventor: Bert Steffens
  • Patent number: 4144623
    Abstract: There is set forth a process for the production of a tampon, particularly for menstrual hygiene in which a fleece of absorbent cotton or similar material is wound up together with a retrieving string arranged on it. A fleece track is carried along approximately horizontally by a conveying device, a string coming from a supply roll is placed on the fleece track to be carried along in the direction of conveyance and subsequently cut off on the fleece track into a retrieving string, whereupon one part of the retrieving string is pressed onto the fleece track and the other part of the retrieving string is turned and whereupon the fleece is torn off the fleece track and wound up on a winding pin together with its retrieving string. There is also described an apparatus for carrying out the process.
    Type: Grant
    Filed: June 27, 1977
    Date of Patent: March 20, 1979
    Inventor: Bert Steffens