Patents by Inventor Zdenek Eckmayer

Zdenek Eckmayer 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: 7022358
    Abstract: Collagen membranes are formed from porcine rinds (i.e., pig skins) for us in a variety of applications and, most preferably, for wrapping food products, such as hams and the like. First, after removing skins from the porcine, the skins are promptly frozen. In later processing, the rinds are thawed and then enzymatically defatted. Then, a quick alkalinic hydrolyzation is performed on the rinds. Then, an acidic hydrolyzation is performed on the rinds. The rinds are then ground into a gel-like fluid mass. Finally, the fluid mass is extruded, sheeted and dried into a collagen membrane. The collagen membrane produced can be, in preferred embodiments, used for wrapping food products, such as hams.
    Type: Grant
    Filed: October 28, 2002
    Date of Patent: April 4, 2006
    Assignee: ED. Geistlich Sohne AG Fur Chemische Industrie
    Inventors: Zdenek Eckmayer, Rainer Dorstewitz, Lothar Schlösser, Josef Anton Böhni, Peter Geistlich
  • Publication number: 20040234577
    Abstract: The invention provides a multi-layer membrane comprising a matrix layer predominantly of collagen II and having an open sponge-like texture, and at least one barrier layer having a close, relatively impermeable texture. Such a membrane is particularly suitable for use in guided tissue regeneration, in particular for use in vivo in the reconstruction of bone or cartilage tissue.
    Type: Application
    Filed: June 18, 2004
    Publication date: November 25, 2004
    Applicant: Ed. Geistlich Soehne AG fuer chemische Industrie
    Inventors: Peter Geistlich, Zdenek Eckmayer, Lothar Schlosser
  • Patent number: 6752834
    Abstract: The invention provides a multi-layer membrane comprising a matrix layer predominantly of collagen II and having an open sponge-like texture, and at least one barrier layer having a close, relatively impermeable texture. Such a membrane is particularly suitable for use in guided tissue regeneration, in particular for use in vivo in the reconstruction of bone or cartilage tissue.
    Type: Grant
    Filed: April 7, 2000
    Date of Patent: June 22, 2004
    Assignee: Ed Geistlich Soehne AG Fuer Chemische Industrie
    Inventors: Peter Geistlich, Zdenek Eckmayer, Lothar Schlösser
  • Patent number: 6676969
    Abstract: A resorbable extracelluar matrix for reconstruction of cartilage tissue includes a purified collagen II derived from natural cartilage tissue from which non-collagen proteins have been removed.
    Type: Grant
    Filed: November 9, 2001
    Date of Patent: January 13, 2004
    Assignee: Ed. Geistlich Soehne AG fuer Chemische Industrie
    Inventors: Peter Geistlich, Myron Spector, Zdenek Eckmayer
  • Publication number: 20030115677
    Abstract: Collagen membranes are formed from porcine rinds (i.e., pig skins) for us in a variety of applications and, most preferably, for wrapping food products, such as hams and the like. First, after removing skins from the porcine, the skins are promptly frozen. In later processing, the rinds are thawed and then enzymatically defatted. Then, a quick alkalinic hydrolyzation is performed on the rinds. Then, an acidic hydrolyzation is performed on the rinds. The rinds are then ground into a gel-like fluid mass. Finally, the fluid mass is extruded, sheeted and dried into a collagen membrane. The collagen membrane produced can be, in preferred embodiments, used for wrapping food products, such as hams.
    Type: Application
    Filed: October 28, 2002
    Publication date: June 26, 2003
    Inventors: Zdenek Eckmayer, Rainer Dorstewitz, Lothar Schlosser, Josef Anton Bohni, Peter Geistlich
  • Publication number: 20020177903
    Abstract: The invention provides a multi-layer membrane comprising a matrix layer predominantly of collagen II and having an open sponge-like texture, and at least one barrier layer having a close, relatively impermeable texture. Such a membrane is particularly suitable for use in guided tissue regeneration, in particular for use in vivo in the reconstruction of bone or cartilage tissue.
    Type: Application
    Filed: April 7, 2000
    Publication date: November 28, 2002
    Inventors: Peter Geistlich, Zdenek Eckmayer, Lothar Schlosser
  • Publication number: 20020170120
    Abstract: Collagen membranes are formed from porcine rinds (i.e., pig skins) for us in a variety of applications and, most preferably, for wrapping food products, such as hams and the like. First, after removing skins from the porcine, the skins are promptly frozen. In later processing, the rinds are thawed and then enzymatically defatted. Then, a quick alkalinic hydrolyzation is performed on the rinds. Then, an acidic hydrolyzation is performed on the rinds. The rinds are then ground into a gel-like fluid mass. Finally, the fluid mass is extruded, sheeted and dried into a collagen membrane. The collagen membrane produced can be, in preferred embodiments, used for wrapping food products, such as hams.
    Type: Application
    Filed: December 7, 1999
    Publication date: November 21, 2002
    Inventors: ZDENEK ECKMAYER, Rainer Dorstewitz, Lothar Schlosser, Josef Anton Bohni, Peter Geistlich
  • Patent number: 6482240
    Abstract: Collagen membranes are formed from porcine rinds (i.e., pig skins) for us in a variety of applications and, most preferably, for wrapping food products, such as hams and the like. First, after removing skins from the porcine, the skins are promptly frozen. In later processing, the rinds are thawed and then enzymatically defatted. Then, a quick alkalinic hydrolyzation is performed on the rinds. Then, an acidic hydrolyzation is performed on the rinds. The rinds are then ground into a gel-like fluid mass. Finally, the fluid mass is extruded, sheeted and dried into a collagen membrane. The collagen membrane produced can be, in preferred embodiments, used for wrapping food products, such as hams.
    Type: Grant
    Filed: December 7, 1999
    Date of Patent: November 19, 2002
    Assignee: Ed. Geistlich Soehne AG fur Chemische Industrie
    Inventors: Zdenek Eckmayer, Rainer Dorstewitz, Lothar Schlösser, Josef Anton Böhni, Peter Geistlich
  • Publication number: 20020048595
    Abstract: A resorbable extracelluar matrix for reconstruction of cartilage tissue includes a purified collagen II derived from natural cartilage tissue from which non-collagen proteins have been removed.
    Type: Application
    Filed: November 9, 2001
    Publication date: April 25, 2002
    Inventors: Peter Geistlich, Myron Spector, Zdenek Eckmayer
  • Patent number: 6326029
    Abstract: A resorbable extracellular matrix for reconstruction of cartilage tissue, the matrix being substantially free from non-native collagen, and including a purified collagen II material formed form natural cartilage and having fibers of native collagen II which are physiologically acceptable for implant into a mammalian body.
    Type: Grant
    Filed: November 10, 1997
    Date of Patent: December 4, 2001
    Assignee: Ed Geistlich Soehne AG fuer Chemische Industrie
    Inventors: Peter Geistlich, Myron Spector, Zdenek Eckmayer
  • Patent number: 5837278
    Abstract: The invention is concerned with wound healing and in particular with the use of a collagen-containing membrane in guided tissue regeneration. The invention provides a resorbable collagen membrane for use in guided tissue regeneration wherein one face of the membrane is fibrous thereby allowing cell growth thereon and the opposite face of the membrane is smooth, thereby inhibiting cell adhesion thereon.
    Type: Grant
    Filed: November 18, 1996
    Date of Patent: November 17, 1998
    Assignee: Ed Geistlich Sohne AG Fur Chemische Industrie
    Inventors: Peter Geistlich, Zdenek Eckmayer, Philip Boyne
  • Patent number: 5028695
    Abstract: The invention concerns a process for the manufacture of collagen membranes for medical applications, in which process the collagen raw materials obtained from cattle or pig collagen are mechanically freed of fatty residues and treated with diluted alkali and acids and, if need be, enzymes. It is thoroughly washed between these steps to thus clean the collagen raw material eliminating the accompanying contamination. It is then processed further while obtaining a collagen matrix with a dry weight of approximately 25% by weight. Thus obtained are collagen membranes, in which the original integral cohesion remains and with which a fast hemostatic effect is achieved; said membranes are also extremely flexible and they adhere well to the surface of a wound.
    Type: Grant
    Filed: March 10, 1989
    Date of Patent: July 2, 1991
    Assignee: Chemokol Gesellschaft Zur Entwicklung von Kollagenprodukten
    Inventors: Zdenek Eckmayer, Ernst Janzen, Gunter Ruttgers
  • Patent number: 4320201
    Abstract: A process for producing collagen sponge which is insoluble but highly swellable in water, the sponge having a velour-like surface and being particularly suited for medical and cosmetic applications.
    Type: Grant
    Filed: September 2, 1980
    Date of Patent: March 16, 1982
    Assignee: Firma Carl Freudenberg
    Inventors: Alexander Berg, Zdenek Eckmayer
  • Patent number: 4232123
    Abstract: A method is disclosed for making a water-soluble hydrolyzate of a keratinaceous starting material which comprises first subjecting said starting material to acid treatment at a pH of 2 or below and at an elevated temperature above 80.degree. C. to effect mild hydrolysis thereof and then enzymatically degrading said acid-treated material in an aqueous bath in the presence of urea with an alkaline proteinase having an activity optimum in a range between pH 9 and pH 13, the initial pH of the enzymatic treatment being within the pH range optimum for the enzyme employed.
    Type: Grant
    Filed: July 9, 1979
    Date of Patent: November 4, 1980
    Assignees: Firma Carl Freudenberg, R/hm GmbH
    Inventors: Klaus Braeumer, Zdenek Eckmayer, Alexander Berg, Rolf Monsheimer, Ernst Pfleiderer
  • Patent number: 4220724
    Abstract: A method for conditioning a collagen-containing raw material to render it adaptable to hot-water extraction of collagen and collagen degradation products therefrom, which comprises incubating said raw material in an aqueous bath containing a neutral or alkaline protease at a pH between 6.5 and 13 in the presence of a member selected from the group consisting of urea, guanidine, or an acid addition salt of quanidine.
    Type: Grant
    Filed: March 13, 1979
    Date of Patent: September 2, 1980
    Assignee: Rohm GmbH
    Inventors: Alexander Berg, Zdenek Eckmayer, Rolf Monsheimer, Ernst Pfleiderer
  • Patent number: 4220723
    Abstract: A method for converting blood, animal parts, bone waste, or meat scraps into useful products, which method comprises hydrolyzing such a substrate with a proteinase, preferably in the presence of urea, in an aqueous hydrolysis medium at a pH in a region in which the proteinase displays sufficient activity, subsequently inactivating the enzyme, and working up the hydrolyzate.
    Type: Grant
    Filed: December 19, 1978
    Date of Patent: September 2, 1980
    Assignee: Rohm GmbH
    Inventors: Zdenek Eckmayer, Alexander Berg, Rolf Monsheimer, Ernst Pfleiderer
  • Patent number: 4185011
    Abstract: A process for the preparation of collagen fibers, especially suited for medicinal use, comprising subjecting animal skin, hide or tendons to digestion with a strong alkali until the material has an amide nitrogen content of approximately 0.20 to 0.40 mole per gram, swelling the mass by thorough intermixing with acid, mechanically separating collagen fibers from the mass, de-swelling the collagen fibers with salts or organic solvents, and dehydrating the collagen fibers to approximately 20 to 40 weight % moisture based on the dry weight of the fibers. A plasticizer may be applied to the fibrous mass before dehydration.
    Type: Grant
    Filed: October 16, 1978
    Date of Patent: January 22, 1980
    Assignee: Firma Carl Freudenberg
    Inventors: Zdenek Eckmayer, Alexander Berg, Joachim Kuhn
  • Patent number: 4179333
    Abstract: A water-soluble hydrolyzate of elastin, suitable for cosmetological use, is disclosed as is a method for making a water-soluble elastin hydrolyzate from starting materials containing elastin which comprises first subjecting said starting material to acid treatment at a pH below about 4 and at an elevated temperature and then enzymatically degrading the acid-treated material, while in comminuted form, in an aqueous bath in the presence of urea, with an alkaline proteinase having an activity optimum in a range between pH 9 and pH 13, the initial pH of the enzymatic treatment being within the pH range optimum for the enzyme employed.
    Type: Grant
    Filed: February 9, 1978
    Date of Patent: December 18, 1979
    Assignees: Firma Carl Freudenberg, Rohm GmbH
    Inventors: Klaus Braeumer, Zdenek Eckmayer, Alexander Berg, Rolf Monsheimer, Ernst Pfleiderer
  • Patent number: 4131650
    Abstract: In the treatment of skin wherein an aqueous paste is applied to the skin, left in contact therewith for a period of time and thereafter removed, the improvement which comprises placing over the paste a foil containing at least about 3 percent of water soluble collagen by weight and having a water permeability of more than about 0.1 gram/dm.sup.2 /minute, whereby collagen is transported through the paste and is absorbed by the skin. Desirably the foil is about 0.01 to 0.03 mm thick and is cross-linked to an extent corresponding to that produced by about 0.1-0.5 percent by weight of glutardialdehyde applied in an acid medium. It may further contain a cosmetically active agent such as an amino acid, peptide, protein, hormone, placenta-extract, phosphatide, tissue-extract, fresh cells and vitamins. The paste may be dried by heating, producing shrinkage of the foil to increase contact with the skin.
    Type: Grant
    Filed: April 9, 1976
    Date of Patent: December 26, 1978
    Assignee: Firma Carl Freudenberg
    Inventors: Klaus Braumer, Zdenek Eckmayer