Patents by Inventor Ralph Hofmann

Ralph Hofmann 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: 20240251520
    Abstract: In a device with connection arrangement, the connection arrangement includes a connection unit and an EMC unit. The EMC unit includes a first electrical plug connector which is connected, e.g., plug-connected, to a mating plug connector, e.g., corresponding to the electrical plug connector, of the connection unit. The EMC unit includes a connection for supply lines, e.g., a mains connection, an AC supply mains connection, etc. For example, the supply lines are adapted to supply the device with electrical power.
    Type: Application
    Filed: June 13, 2022
    Publication date: July 25, 2024
    Applicant: SEW-EURODRIVE GMBH & CO. KG
    Inventors: Ralph MAYER, Ralf BENNERSCHEIDT, Rodion ZERR, Christian HOFMANN
  • Patent number: 8988248
    Abstract: A method for modulating the effective power in one or several power consuming devices disposed in an A/C system in order to transmit data on a power supply line thereof by specifically varying the effective power in the connected device. In order to transmit the data, the momentary value of the effective power is randomly varied (increased or decreased), and the data is impressed into the A/C supply line by a unit (transmitter or modulator) and is evaluated by another unit (receiver or demodulator).
    Type: Grant
    Filed: September 29, 2005
    Date of Patent: March 24, 2015
    Assignee: AIZO AG
    Inventors: Wilfried Beck, Ralph Hofmann
  • Patent number: 8834833
    Abstract: Process for preparing an aluminum oxide powder which is present in the form of aggregated primary particles and comprises at least 85% by weight of alpha-aluminum oxide, in which an aluminum oxide powder which a) is present in the form of aggregated primary particles, b) is selected from the group consisting of gamma-aluminum oxide, theta-aluminum oxide, delta-aluminum oxide and/or X-ray amorphous aluminum oxide, and c) has a tamped density of at least 250 g/l, is subject to a heat treatment at 13000 C or more and subsequently milled. Aluminum oxide powder which can be obtained by this process. Aluminum oxide powder in the form of aggregated primary particles having a BET surface area of from 3 to 30 m2/g, in which the proportion of alpha-aluminum oxide is at least 85% by weight and the ratio dgo/dio of the weight distribution of the primary particles is at least 2.8. Use as constituent of fluorescent tubes.
    Type: Grant
    Filed: November 17, 2009
    Date of Patent: September 16, 2014
    Assignee: Evonik Degussa GmbH
    Inventors: Christian Schulze-Isfort, Christoph Batz-Sohn, Herbert Habermann, Ralph Hofmann
  • Patent number: 8377994
    Abstract: The use of Schülpen based on pyrogenically produced silicon dioxide in pharmaceutical compositions is described.
    Type: Grant
    Filed: May 10, 2006
    Date of Patent: February 19, 2013
    Assignee: Evonik Degussa GmeH
    Inventors: Ann Gray, Margarete Drechsler, Ralph Hofmann
  • Patent number: 8349441
    Abstract: Pyrogenic titanium dioxide is compressed to slugs by preliminarily deaerating it, compressing it to slugs, and crushing the slugs and optionally classifying them. The slugs are characterized by a tamped density (to DIN EN ISO 787-11) of 500 to 1200 g/l.
    Type: Grant
    Filed: August 9, 2007
    Date of Patent: January 8, 2013
    Assignee: Evonik Degussa GmbH
    Inventors: Ralph Hofmann, Guenter Stein, Frank Menzel
  • Patent number: 8252853
    Abstract: Rubber mixtures are prepared by using, alongside the other constituents, pyrogenically prepared silicon dioxide in the form of crusts whose tamped bulk density (to DIN EN ISO 787-11) is from 185 to 700 g/l.
    Type: Grant
    Filed: January 2, 2007
    Date of Patent: August 28, 2012
    Assignee: Evonik Degussa GmbH
    Inventors: Rainer Friehmelt, Joachim Fröhlich, Werner Niedermeier, Ralph Hofmann, Uwe Schachtely
  • Publication number: 20110217552
    Abstract: Process for preparing an aluminium oxide powder which is present in the form of aggregated primary particles and comprises at least 85% by weight of alpha-aluminium oxide, in which an aluminium oxide powder which a) is present in the form of aggregated primary particles, b) is selected from the group consisting of gamma-aluminium oxide, theta-aluminium oxide, delta-aluminium oxide and/or X-ray amorphous aluminium oxide, and c) has a tamped density of at least 250 g/l, is subject to a heat treatment at 13000C or more and subsequently milled. Aluminium oxide powder which can be obtained by this process. Aluminium oxide powder in the form of aggregated primary particles having a BET surface area of from 3 to 30 m2/g, in which the proportion of alpha-aluminium oxide is at least 85% by weight and the ratio dgo/dio of the weight distribution of the primary particles is at least 2.8. Use as constituent of fluorescent tubes.
    Type: Application
    Filed: November 17, 2009
    Publication date: September 8, 2011
    Applicant: Evonik Degussa GmbH
    Inventors: Christian Schulze-Isfort, Christoph Batz-Sohn, Herbert Habermann, Ralph Hofmann
  • Patent number: 7842269
    Abstract: Pyrogenically prepared silicon dioxide is compacted to give crusts, in that it is subject to preliminary de-aeration, and is compacted to give crusts, and the crusts are broken and, if appropriate, classified. The tamped bulk density (to DIN EN ISO 787-11) of the silicon dioxide compacted to give crusts is from 185 to 700 g/l. It can be used as filler in rubber mixtures.
    Type: Grant
    Filed: January 4, 2007
    Date of Patent: November 30, 2010
    Assignee: Evonik Degussa GmbH
    Inventors: Uwe Schachtely, Ralph Hofmann, Günter Stein, Roland Schaffer, Rainer Friehmelt
  • Publication number: 20100261823
    Abstract: Flakes comprising pyrogenically prepared silicon dioxide were rendered water repellent after compacting. They can be used in natural rubber and synthetic rubber production.
    Type: Application
    Filed: November 18, 2008
    Publication date: October 14, 2010
    Applicant: Evonik Degussa GmbH
    Inventors: Florian Felix Kneisel, Ralph Hofmann
  • Publication number: 20100179269
    Abstract: Pyrogenically prepared silicon dioxide is compacted to give crusts, in that it is subject to preliminary de-aeration, and is compacted to give crusts, and the crusts are broken and, if appropriate, classified. The tamped bulk density (to DIN EN ISO 787-11) of the silicon dioxide compacted to give crusts is from 185 to 700 g/l. It can be used as filler in rubber mixtures.
    Type: Application
    Filed: January 4, 2007
    Publication date: July 15, 2010
    Inventors: Uwe Schachtely, Ralph Hofmann, Günter Stein, Roland Schaffer, Rainer Friehmelt
  • Publication number: 20100010116
    Abstract: Rubber mixtures are prepared by using, alongside the other constituents, pyrogenically prepared silicon dioxide in the form of crusts whose tamped bulk density (to DIN EN ISO 787-11) is from 185 to 700 g/l.
    Type: Application
    Filed: January 2, 2007
    Publication date: January 14, 2010
    Inventors: Rainer Friehmelt, Joachim Fröhlich, Werner Niedermeier, Ralph Hofmann, Uwe Schachtely
  • Publication number: 20090312439
    Abstract: The use of Schülpen based on pyrogenically produced silicon dioxide in pharmaceutical compositions, the pharmaceutical compositions per se, as well as an adsorbate consisting of the Schülpen and at least one further substance selected from pharmaceutical active constituents and excipients, and the produce of such adsorbates, are described.
    Type: Application
    Filed: May 10, 2006
    Publication date: December 17, 2009
    Inventors: Ralph Hofmann, Ann Gray, Margarete Drechsler
  • Publication number: 20090306224
    Abstract: The use of Schülpen based on pyrogenically produced silicon dioxide in pharmaceutical compositions is described.
    Type: Application
    Filed: May 10, 2006
    Publication date: December 10, 2009
    Applicant: DEGUSSA GMBH
    Inventors: Ann Gray, Margarete Drechsler, Ralph Hofmann
  • Publication number: 20090280309
    Abstract: Pyrogenic titanium dioxide is compressed to slugs by preliminarily deaerating it, compressing it to slugs, and crushing the slugs and optionally classifying them. The slugs are characterized by a tamped density (to DIN EN ISO 787-11) of 500 to 1200 g/l.
    Type: Application
    Filed: August 9, 2007
    Publication date: November 12, 2009
    Applicant: EVONIK DEGUSSA GMBH
    Inventors: Ralph Hofmann, Guenter Stein, Frank Menzel
  • Publication number: 20090027175
    Abstract: A method for modulating the effective power in one or several power consuming devices disposed in an A/C system in order to transmit data on a power supply line thereof by specifically varying the effective power in the connected device. In order to transmit the data, the momentary value of the effective power is randomly varied (increased or decreased), and the data is impressed into the A/C supply line by a unit (transmitter or modulator) and is evaluated by another unit (receiver or demodulator).
    Type: Application
    Filed: September 29, 2005
    Publication date: January 29, 2009
    Applicant: AIZO AG
    Inventors: Wilfried Beck, Ralph Hofmann