Patents by Inventor Oliver Schaefer

Oliver Schaefer 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: 7014975
    Abstract: Surface-modified solids bearing groups of the formula I SiR12—R—NH2??(I), are prepared by reacting a solid having OH groups on a surface thereof with a cyclic silazane of the general formula II where R is a divalent optionally substituted hydrocarbon radical optionally containing heteroatom containing groups, and R1 is a hydrogen atom, or a monovalent optionally substituted hydrocarbon or hydrocarbonoxy group optionally containing heteroatom-containing groups. The surface-modified solids are preferably metal oxide particles. Such surface-modified particles are useful in numerous products.
    Type: Grant
    Filed: September 27, 2002
    Date of Patent: March 21, 2006
    Assignee: Wacker-Chemie GmbH
    Inventors: Herbert Barthel, Mario Heinemann, Bernd Pachaly, Andreas Bauer, Oliver Schaefer
  • Patent number: 6943265
    Abstract: The invention relates to a method for the production of hydroxyalkyl polysiloxanes of general formula (V) (SiO4/2)k(R12SiO3/2)m(R12SiO2/2)p(R13SiO1/2)q[O1/2SiR32—(CR42)b—OH]5[O1/2H]t (V), wherein organosiloxanes of general formula (VI) (SiO4/2)k(R1SiO3/2)m(R12SiO2/2)p(R13SiO1/2)q[O1/2H]r(VI) containing silanol are made to react with compounds having at least one unit of general formula (IV) [O—(CR42)b—SiR32]n—(IV).
    Type: Grant
    Filed: February 7, 2002
    Date of Patent: September 13, 2005
    Assignee: Consortium fur Elektrochemische Industrie, GmbH
    Inventors: Oliver Schäfer, Thomas Kammel, Bernd Pachaly
  • Patent number: 6881855
    Abstract: Silanes of the formula Ra1R4-a-xSiLx??(I) where each R is identical or different and is a monovalent, optionally substituted hydrocarbon radical which is free of aliphatic carbon—carbon multiple bonds and has from 1 to 18 carbon atoms per radical, R1 is an optionally substituted 2-norbornyl radical, L is a leaving group, a is 1, 2 or 3 and x is 1 or 2, with the proviso that the sum of a+x?4, are useful for protecting functional groups of organic compounds (2) which have at least one functional group having an active hydrogen atom, preferably as a hydroxyl group —OH, a thiol groups —SH, an amine group —NH— or —NH2, a carboxyl group —COOH, or an amide group —CONH— or —CONH2.
    Type: Grant
    Filed: September 26, 2002
    Date of Patent: April 19, 2005
    Assignee: Consortium fur Elektrochemische Industrie GmbH
    Inventors: Dieter Heldmann, Oliver Schaefer, Juergen Stohrer
  • Publication number: 20040254325
    Abstract: The invention relates to a process for preparing organopolysiloxane/polyurea/polyurethane block copolymers, and also to the use of the organopolysiloxane/polyurea/polyurethane block copolymers prepared by means of the process.
    Type: Application
    Filed: May 26, 2004
    Publication date: December 16, 2004
    Applicant: Wacker-Chemie GmbH
    Inventors: Juergen Kuepfer, Oliver Schaefer
  • Patent number: 6815069
    Abstract: Textile structures comprise fibers and an organopolysiloxane-polyurea-polyurethane block copolymer (A) of the general formula (1) as a coating material or finishing material for fibers where R is a hydrocarbyl group, X is an alkylene group, A and Z are oxygen or primary or secondary amino groups, Y is a divalent hydrocarbyl group, D is an alkylene group, and Q is an end group, 1≦n≦4000, a≧1, 0≦b≦40, O≦C≦30, and d>O. The textile structures exhibit excellent hand, waterproofness, and water vapor permeability, and are stable to lanudering.
    Type: Grant
    Filed: February 13, 2003
    Date of Patent: November 9, 2004
    Assignee: Wacker-Chemie GmbH
    Inventors: Thomas Hohberg, Oliver Schaefer, Johann Mueller, Philippe Moens, Thomas Lehotkay
  • Patent number: 6753383
    Abstract: A process for reducing free aldehydes in dispersions, suspensions, emulsions and solutions which comprises including therein thioamine compound of the formula IV and optionally a thioamine of the formula III: where R1 is a C1-5 alkyl radical, an aryl radical or hydrogen, R2 is —(COO)a —E or —(CONH)a—E where a is 0 or 1 and E, R3, R4, and R5 are independently R4 and R5 together containing at least one carbon atom, and n being 0 or 1.
    Type: Grant
    Filed: December 6, 2001
    Date of Patent: June 22, 2004
    Assignee: Consortium fuer Elektrochemische Industrie GmbH
    Inventors: Oliver Schaefer, Juergen Stohrer, Wolfgang Doering
  • Publication number: 20030176613
    Abstract: Textile structures comprise fibers and an organopolysiloxane-polyurea-polyurethane block copolymer (A) of the general formula (1) 1
    Type: Application
    Filed: February 13, 2003
    Publication date: September 18, 2003
    Inventors: Thomas Hohberg, Oliver Schaefer, Johann Mueller, Philippe Moens, Thomas Lehotkay
  • Publication number: 20030099895
    Abstract: Surface-modified solids bearing groups of the formula I
    Type: Application
    Filed: September 27, 2002
    Publication date: May 29, 2003
    Applicant: Wacker-Chemie GmbH
    Inventors: Herbert Barthel, Mario Heinemann, Bernd Pachaly, Andreas Bauer, Oliver Schaefer
  • Publication number: 20030097015
    Abstract: Silanes of the formula
    Type: Application
    Filed: September 26, 2002
    Publication date: May 22, 2003
    Applicant: Consortium fur elektrochemische Industrie GmbH
    Inventors: Dieter Heldmann, Oliver Schaefer, Juergen Stohrer
  • Patent number: 6534615
    Abstract: The invention relates to a process for preparing an amino-functional organosiloxane of the formula III, (SiO{fraction (4/2)})k(R1SiO{fraction (3/2)})m(R12SiO{fraction (2/2)})p(R13SiO½)q[O½SiR12—R—NH2]s[O½H]t  (III) which comprises reacting an organosiloxane of the formula IV (SiO{fraction (4/2)})k(R1SiO{fraction (3/2)})m(R12SiO{fraction (2/2)})p(R13SiO½)q[O½H]r  (IV) with a cyclic silazane of the formula V where R, Rx, R1, s, t, r, k, m, p and q are as defined in claim 1.
    Type: Grant
    Filed: October 5, 2001
    Date of Patent: March 18, 2003
    Assignee: Consortium fur Elektrochemische Industrie GmbH
    Inventors: Oliver Schäfer, Volker Frey, Bernd Pachaly, Andreas Bauer
  • Patent number: 6531620
    Abstract: The invention relates to cyclic silazanes of the formula II in which R is a divalent, Si—C and C—N-bound, optionally cyano- or halogen-substituted C3-C15-hydrocarbon radical, in which one or more, non-adjacent methylene units may be replaced by —O—, —CO—, —COO—, —OCO—, —OCOO—, —S— or —NRX— groups and in which one or more non-adjacent methine units may be replaced by —N═, —N═N— or —P═ groups, where at least 3 and at most 6 atoms are arranged between the silicon atom and the nitrogen atom of the ring, RX is hydrogen or an optionally halogen-substituted C1-C10-hydrocarbon radical, and R2 is a hydrogen atom or a monovalent, optionally cyano- or halogen-substituted, Si-C- bound C1-C20-hydrocarbon radical or C1-C20-hydrocarbonoxy radical, in each of which one or more non-adjacent methylene units may be replaced by —O—, —CO—, —COO&mda
    Type: Grant
    Filed: September 27, 2001
    Date of Patent: March 11, 2003
    Assignee: Consortium fur Elecktrochemische Industrie GmbH
    Inventors: Leonhard Brader, Oliver Schäfer, Andreas Bauer, Volker Frey, Bernd Pachaly
  • Patent number: 6498017
    Abstract: A method for the diagnostic detection of diseases associated with protein depositions (pathological protein depositions) by measuring an association of substructures of the pathological protein depositions, structures forming pathological protein depositions, structures corresponding to pathological protein depositions and/or pathological protein depositions as a probe; to substructures of the pathological protein depositions structures forming pathological protein depositions, structures corresponding to pathological protein deposition and/or pathological protein depositions as targets; characterized in that the target is detected in liquid phase wherein, in the case of detecting Alzheimer's disease, the liquid phase is obtained from body fluids or is itself a body fluid; with the proviso that the association of the probe to the target is measured before self-aggregation of the probe predominates.
    Type: Grant
    Filed: May 22, 2000
    Date of Patent: December 24, 2002
    Assignee: Evotec Biosystems AG
    Inventors: Detlev Riesner, Karin Post, Oliver Schaefer, Martin Pitschke, Manfred Eigen, Jan Bieschke
  • Publication number: 20020123543
    Abstract: A process for reducing free aldehydes in dispersions, suspensions, emulsions and solutions which comprises including therein thioamine compounds of the general formula I or II 1
    Type: Application
    Filed: December 6, 2001
    Publication date: September 5, 2002
    Inventors: Oliver Schaefer, Juergen Stohrer, Wolfgang Doering
  • Patent number: 6388119
    Abstract: The invention relates to a process for preparing a silane of the formula I R6R5CH—R4CH—SiR1R2R3  (I), which comprises reacting a silane of the formula II HSiR1R2R3  (II), with an alkene of the formula III R6R5CH═CHR4  (III), in the presence of an iridium compound of the formula IV as catalyst [(diene)IrCl]2  (IV), and free diene as cocatalyst, where R1, R2, R3, R4, R5, R6, R and diene are as defined in claim 1.
    Type: Grant
    Filed: September 27, 2001
    Date of Patent: May 14, 2002
    Assignee: Consortium fur elektrochemische Industrie GmbH
    Inventors: Andreas Bauer, Oliver Schäfer, Markus Kriegbaum, Leonhard Brader, Bernd Pachaly, Volker Frey
  • Publication number: 20020042121
    Abstract: A method for the diagnostic detection of diseases associated with protein depositions (pathological protein depositions) by measuring an association of substructures of the pathological protein depositions, structures forming pathological protein depositions, structures corresponding to pathological protein depositions and/or pathological protein depositions as a probe; to substructures of the pathological protein depositions, structures forming pathological protein depositions, structures corresponding to pathological protein depositions and/or pathological protein depositions as targets; characterized in that the target is detected in liquid phase wherein, in the case of detecting Alzheimer's disease, the liquid phase is obtained from body fluids or is itself a body fluid; with the proviso that the association of the probe to the target is measured before self-aggregation of the probe predominates.
    Type: Application
    Filed: May 22, 2000
    Publication date: April 11, 2002
    Inventors: DETLEV RIESNER, KARIN POST, OLIVER SCHAEFER, MARTIN PITSCHKE, MANFRED EIGEN, JAN BIESCHKE