Patents by Inventor Hans-Dieter Lehmann

Hans-Dieter Lehmann 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: 8309520
    Abstract: The present invention relates to a fully synthetic albumin analog, to a hemocompatible coating for medical devices containing the fully synthetic albumin analog, as well as to medical devices coated with the hemocompatible coating. The albumin analog preferably has two basic structures which are connected with one another via at least one bridging unit, the basic structures respectively having, in a geometrically defined manner, at least two bound joint regions to which at least one residue is covalently bound, wherein the basic structures are, respectively, a benzene carboxylic acid, and wherein the joint regions are formed via acid amide bonds, and wherein each residue, respectively, comprises a lipophilic region and a hydrophilic region.
    Type: Grant
    Filed: November 23, 2010
    Date of Patent: November 13, 2012
    Assignee: LS MedCap GmbH
    Inventor: Hans-Dieter Lehmann
  • Publication number: 20110117139
    Abstract: The present invention relates to a fully synthetic albumin analog, to a hemocompatible coating for medical devices containing the fully synthetic albumin analog, as well as to medical devices coated with the hemocompatible coating. The albumin analog preferably has two basic structures which are connected with one another via at least one bridging unit, the basic structures respectively having, in a geometrically defined manner, at least two bound joint regions to which at least one residue is covalently bound, wherein the basic structures are, respectively, a benzene carboxylic acid, and wherein the joint regions are formed via acid amide bonds, and wherein each residue, respectively, comprises a lipophilic region and a hydrophilic region.
    Type: Application
    Filed: November 23, 2010
    Publication date: May 19, 2011
    Applicant: LS MEDCAP GMBH
    Inventor: Hans-Dieter Lehmann
  • Patent number: 4863603
    Abstract: A multilayer filter medium (6) is used for separating precipitates containing cholesterol from blood plasma which consists of at least one open filter medium (7) which adsorbs precipitate and of a microporous membrane (9) which controls the pressure conditions in the filter element, whereby the layer (7) which specifically adsorbs the precipitate is hydrophobic and the microporous membrane (9) is hydrophilic. In addition, a positively charged adsorption medium (9) is provided on the side of the microporous membrane (8) facing away from the hydrophobic adsorption medium (7). In this manner, a large adsorption area is created and kept accessible for the precipitates and for heparin.
    Type: Grant
    Filed: April 1, 1988
    Date of Patent: September 5, 1989
    Assignee: Sartorius GmbH
    Inventors: Hans-Dieter Lehmann, Heinz-Gerhard Kohn
  • Patent number: 4710496
    Abstract: Novel pyrrol-1-ylphenyldihydropyridazinones of the formula ##STR1## their preparation and their use in the treatment of disorders.
    Type: Grant
    Filed: July 9, 1985
    Date of Patent: December 1, 1987
    Assignee: BASF Aktiengesellschaft
    Inventors: Karl-Heinz Geiss, Bernhard Schmied, Manfred Raschack, Hans-Dieter Lehmann, Josef Gries, Klaus Ruebsamen
  • Patent number: 4636504
    Abstract: Novel 6-(acylaminoaryl)-3(2H)-pyridazinones of the formula ##STR1## where R.sup.1, R.sup.2, R.sup.3, R.sup.4, A and B have the meanings given in the description, and their preparation are described and inhibiting thrombocyte aggregation and gastric secretion.The compounds are useful for treating disorders.
    Type: Grant
    Filed: January 17, 1984
    Date of Patent: January 13, 1987
    Assignee: BASF Aktiengesellschaft
    Inventors: Phillip A. Rossy, Marco Thyes, Albrecht Franke, Horst Koenig, Hans Dieter Lehmann, Josef Gries, Ludwig Friedrich, Dieter Lenke
  • Patent number: 4412000
    Abstract: Biologically active material such as an enzyme is bonded to a carrier containing hydroxyl groups by binding an isocyanate compound to the carrier and bonding the biologically active material to the bound isocyanate compound. Binding of the isocyanate compound to the carrier is achieved with the use of a non-toxic titanium based compound which catalyzes the formation of urethane bonds. The preferred non-toxic based titanium compound is an orthotitanium acid ester such as tetrabutyltitanate.
    Type: Grant
    Filed: November 12, 1981
    Date of Patent: October 25, 1983
    Assignee: Gambro Dialysatoren KG
    Inventors: Hans-Dieter Lehmann, Gerd G. Krisam, Ruth S. Golla
  • Patent number: 4376707
    Abstract: A process is disclosed for removing urea from blood wash fluids or blood fluids in which the fluids are treated with an organic solid containing at least one proton-containing secondary substituent group which masks and activates the aldehyde group and the fluids and the solid organic compound are separated.
    Type: Grant
    Filed: May 21, 1979
    Date of Patent: March 15, 1983
    Assignee: Gambro Dialysatoren G.m.b.H. & Co. K.G.
    Inventor: Hans-Dieter Lehmann
  • Patent number: 4321350
    Abstract: Polyurethane molding compositions are disclosed which contain diisocyanates and polyols and/or polyurethane prepolymers and sorbic acid or cinnamic as a setting catalyst. A process for preparing such compositions is also disclosed. These compositions give a rapid initial hardening and therefore mold release properties, which contribute to increased production speeds. Moreover, the acids used are physiologically safe, so that the process may be used for the production of objects used in medical science. The acids may also be used in a physiologically safe mixture with a heavy-metal containing catalyst.
    Type: Grant
    Filed: May 20, 1980
    Date of Patent: March 23, 1982
    Assignee: Gambro Dialysatoren KG
    Inventor: Hans-Dieter Lehmann
  • Patent number: 4313831
    Abstract: Processes and apparatus for the removal of waste metabolites from metabolite-containing solutions are disclosed. The disclosed processes include alternatively adsorbing and desorbing the metabolites on a pair of adsorbent-containing columns, each column being maintained at a reduced temperature during adsorption and at an elevated temperature during desorption, with the columns being flushed subsequent to desorption and prior to their re-use for adsorption thereon.
    Type: Grant
    Filed: December 17, 1979
    Date of Patent: February 2, 1982
    Assignees: Gambro Dialysatoren KG, Gambro AB
    Inventors: Hans-Dieter Lehmann, Lars-Ake Larsson
  • Patent number: 4303521
    Abstract: Columns for the treatment of a liquid with particulate material are disclosed comprising first and second layers of sheet material in face-to-face contact with each other, an inlet and an outlet located at points between the layers, and welds or the like for joining the layers together along a pair of substantially parallel paths between the inlet and the outlet in order to form an elongated space adapted to be filled with particulate material therebetween.
    Type: Grant
    Filed: June 19, 1980
    Date of Patent: December 1, 1981
    Assignee: Gambro Dialysatoren GmbH & Co KG
    Inventor: Hans-Dieter Lehmann
  • Patent number: 4250141
    Abstract: A column for removing poisons and/or other undesired substances from a liquid mixture. The column has a mixture of inactive filler particles and active granules positioned therein, with said filler particles being substantially larger than said active granules, (which are selected from adsorbing material and ion-exchanging material). The filler particles are in fixed contact relationship with each other and the active granules completely fill the spaces between the filler particles.
    Type: Grant
    Filed: December 15, 1978
    Date of Patent: February 10, 1981
    Assignee: Gambro Dialysatoren GmbH & Co. KG
    Inventors: Hans-Dieter Lehmann, Peter Konstantin