Patents by Inventor Roland Strietzel

Roland Strietzel 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).

  • Publication number: 20170135789
    Abstract: In a method for forming a dental part, a laser beam is guided over a powder layer of biocompatible material. The laser is guided by a computer controlled laser scanning system based on data representing the shape of the cross-section through the shaped body. The powder is substantially melted by the laser beam to form a layer in the shaped body, to build the shaped body entirely from layers of laser-melted material.
    Type: Application
    Filed: February 1, 2017
    Publication date: May 18, 2017
    Inventors: Haig Dolabdjian, Roland Strietzel
  • Patent number: 9603683
    Abstract: A method for producing a dental restoration (D) by CAD casting is described, said method comprising the steps of a) recording three-dimensional, digital data of the dentition or of a part of the dentition of a patient, b) creating a virtual dental restoration (VD) using the recorded three-dimensional, digital data, wherein the virtual dental restoration (VD) is expanded in relation to the dental restoration (D) to be produced, c) preparing a model (M) using the created virtual dental restoration, such that the model (M) is expanded in relation to the dental restoration (D) to be produced, d) embedding the model (M) in an embedding compound (EM), e) hardening the embedding compound (EM) and removing the model (M), such that a casting mold is obtained, f) filling the casting mold, preferably by pouring, with a casting material (GM) and cooling the casting material (GM), such that the dental restoration (D) is obtained, and optionally the further steps of g) working the dental restoration (D), and h) veneering t
    Type: Grant
    Filed: December 23, 2011
    Date of Patent: March 28, 2017
    Assignee: BEGO BREMER GOLDSCHLAGEREI WILH. HERBST GMBH & CO. KG
    Inventors: Stephan Dierkes, Severin Seifert, Roland Strietzel
  • Patent number: 9593951
    Abstract: A method for increasing the reliability of sensor systems for determining the position of flying objects. Since the position determination is very decisive for the execution of planned missions, it is especially important to increase the reliability of such systems. The star sensors of the star systems are preferably structured identically and connected to each other by a bidirectional bus system. Due to the presence of several identical modules in the sensor system, there is an inner redundancy that can be utilized via the bus system. The bus system allows the transmission of signals of different data processing levels, so that the transmission of the data of the data processing levels can be adapted to modules that may have failed.
    Type: Grant
    Filed: January 10, 2013
    Date of Patent: March 14, 2017
    Assignee: Jena-Optronik GmbH
    Inventors: Roland Strietzel, Klaus Michel, Dietmar Ratzsch
  • Publication number: 20150310276
    Abstract: A method for the automatic correction of alignment errors in individual star trackers (R, S) of star tracker systems (1) is provided. The correction of orientation errors is necessary whenever it is not possible to mount the star trackers of the star tracker system on a shared stable block of a platform. Orientation errors can arise due to installation deviations and deformation of the platform, for instance, caused by mechanical loads or temperature fluctuations. A star tracker (R) that is attached in a very stable manner to the platform serves as the reference tracker. The orientation that it measures constitutes the reference information. An error signal and an orientation matrix are derived from the measured orientation of the other star trackers, thereby effectuating the correction of the coordinate systems of the star trackers that are to be corrected, and thus of their measured quantities.
    Type: Application
    Filed: December 2, 2013
    Publication date: October 29, 2015
    Inventors: Roland Strietzel, Klaus Michel, Dietmar Ratzsch
  • Publication number: 20140008826
    Abstract: A method for producing a dental restoration (D) by CAD casting is described, said method comprising the steps of a) recording three-dimensional, digital data of the dentition or of a part of the dentition of a patient, b) creating a virtual dental restoration (VD) using the recorded three-dimensional, digital data, wherein the virtual dental restoration (VD) is expanded in relation to the dental restoration (D) to be produced, c) preparing a model (M) using the created virtual dental restoration, such that the model (M) is expanded in relation to the dental restoration (D) to be produced, d) embedding the model (M) in an embedding compound (EM), e) hardening the embedding compound (EM) and removing the model (M), such that a casting mold is obtained, f) filling the casting mold, preferably by pouring, with a casting material (GM) and cooling the casting material (GM), such that the dental restoration (D) is obtained, and optionally the further steps of c) working the dental restoration (D), and h) veneering t
    Type: Application
    Filed: December 23, 2011
    Publication date: January 9, 2014
    Applicant: BEGO BREMER GOLDSCHLAGEREI WILH. HERBST GMBH & CO. KG
    Inventors: Stephan Dierkes, Severin Seifert, Roland Strietzel
  • Publication number: 20120148987
    Abstract: In a method for forming a dental part, a laser beam is guided over a powder layer of biocompatible material. The laser is guided by a computer controlled laser scanning system based on data representing the shape of the cross-section through the shaped body. The powder is substantially melted by the laser beam to form a layer in the shaped body, to build the shaped body entirely from layers of laser-melted material.
    Type: Application
    Filed: December 9, 2011
    Publication date: June 14, 2012
    Applicant: BEGO Bremer Goldschlagerei Wilh. Herbst GmbH & Co. KG
    Inventors: Haig Dolabdjian, Roland Strietzel
  • Publication number: 20100028191
    Abstract: In a method for forming a dental part, a laser beam is guided over a powder layer of biocompatible material. The laser is guided by a computer controlled laser scanning system based on data representing the shape of the cross-section through the shaped body. The powder is substantially melted by the laser beam to form a layer in the shaped body, to build the shaped body entirely from layers of laser-melted material.
    Type: Application
    Filed: October 13, 2009
    Publication date: February 4, 2010
    Applicant: BEGO Bremer Goldschlagerei Wilh. Herbst GmbH & Co. KG
    Inventors: Haig Dolabdjian, Roland Strietzel
  • Patent number: 7491361
    Abstract: A burning-on alloy for the production of ceramically veneered dental restorations, containing: cobalt 55-65 percent by weight, chromium 20-30 percent by weight, tungsten and/or where the sum of the content by weight molybdenum of molybdenum and half the content by weight of tungsten is in the range of 4-12 percent by weight, gallium 2-4 percent by weight, silicon 0-2 percent by weight, manganese 0.05-1.9 percent by weight, nitrogen 0-0.4 percent by weight, carbon 0-0.02 percent by weight, vanadium, niobium, in total 0-5 percent by weight, tantalum, iron, titanium, zirconium, hafnium nickel 0-0.1 percent by weight, rhenium, gold, in total 0-0.09 percent by weight, silver, copper other metals, 0-1 percent by weight, semi-metals and impurities where the percent by weight data are in each case based on the total weight of the alloy, is described.
    Type: Grant
    Filed: February 16, 2006
    Date of Patent: February 17, 2009
    Assignee: BEGO Bremer Goldschl├Ągerei Wilh. Herbst GmbH & Co. KG
    Inventor: Roland Strietzel
  • Publication number: 20070026249
    Abstract: An alloy that can be fired onto, for producing ceramic-faced dental restorations, comprising or consisting of: Silver 40-45 wt. %, Gold 37.5-45 wt. %, Palladium 0-14.5 wt. %, Indium, zinc, tin, copper, in total 5.5-15 wt. %, lanthanoids, scandium, lanthanum Manganese 0.1-5 wt. %, Tantalum, platinum, iridium, osmium, in total 0.05-5 wt. %, ruthenium, rhodium, rhenium, titanium, niobium, zirconium, tungsten, vanadium Gallium, iron 0-5 wt. %, Other metals, semimetals and 0-1 wt. %, impurities is described, wherein the data relating to percentage by weight are each with respect to the total weight of the alloy.
    Type: Application
    Filed: July 28, 2006
    Publication date: February 1, 2007
    Inventor: Roland Strietzel
  • Publication number: 20060180637
    Abstract: A burning-on alloy for the production of ceramically veneered dental restorations, containing: cobalt 55-65 percent by weight, chromium 20-30 percent by weight, tungsten and/or where the sum of the content by weight molybdenum of molybdenum and half the content by weight of tungsten is in the range of 4 -12 percent by weight, gallium 2-4 percent by weight, silicon 0-2 percent by weight, manganese 0.05-1.9 percent by weight, nitrogen 0-0.4 percent by weight, carbon 0-0.02 percent by weight, vanadium, niobium, in total 0-5 percent by weight, tantalum, iron, titanium, zirconium, hafnium nickel 0-0.1 percent by weight, rhenium, gold, in total 0-0.09 percent by weight, silver, copper other metals, 0-1 percent by weight, semi-metals and impurities where the percent by weight data are in each case based on the total weight of the alloy, is described.
    Type: Application
    Filed: February 16, 2006
    Publication date: August 17, 2006
    Inventor: Roland Strietzel
  • Publication number: 20050056350
    Abstract: In a method for forming a dental part, a laser beam is guided over a powder layer of biocompatible material. The laser is guided by a computer controlled laser scanning system based on data representing the shape of the cross-section through the shaped body. The powder is substantially melted by the laser beam to form a layer in the shaped body, to build the shaped body entirely from layers of laser-melted material.
    Type: Application
    Filed: October 29, 2004
    Publication date: March 17, 2005
    Inventors: Haig Dolabdjian, Roland Strietzel
  • Publication number: 20020187458
    Abstract: In a method for forming a dental part, a laser beam is guided over a powder layer of biocompatible material. The laser is guided by a computer controlled laser scanning system based on data representing the shape of cross-section through the shaped body. The powder is substantially melted by the laser beam to form a layer in the shaped body, to build the shaped body entirely from layers of laser-melted material.
    Type: Application
    Filed: May 14, 2002
    Publication date: December 12, 2002
    Applicant: BEGO Bremer Goldschlagerei Wilh. Herbst GMBH & Co.
    Inventors: Haig Dolabdjian, Roland Strietzel
  • Publication number: 20020053635
    Abstract: An arrangement for determining with high accuracy the angle of incidence of light, in particular sunlight, has low cost electronic components and low susceptibility to sources of interference and other error signals. An elongated photodiode array has a slot for a band of light to illuminate the photodiode array. The slot is arranged with a predefined spacing above and orthogonally to a preset longitudinal direction of the sensor array, which primarily presets the light's maximally detectable angle of incidence. The sensor array includes rows of several aligned congruent photodiode areas having substantially the same length and width. Each photodiode area has a size that generates a maximum photoelectric current when illuminated by the band of light. This current is sufficient in amount to be divided into a selected number and size of digital resolution stages.
    Type: Application
    Filed: September 18, 2001
    Publication date: May 9, 2002
    Applicant: Jena-Optronik GmbH
    Inventors: Karin Schroter, Roland Strietzel, Eckehard Strumpf
  • Publication number: 20010037185
    Abstract: A method for determining the state variables of a moving rigid body in space, in particular for determining the position and attitude of a spacecraft during an approach and docking maneuver.
    Type: Application
    Filed: March 2, 2001
    Publication date: November 1, 2001
    Inventors: Roland Strietzel, Karl-Hermann Kolk