Patents by Inventor Manfred Gehrig

Manfred Gehrig 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).

  • Pressure vessel arrangement comprising an external pressure vessel and at least one insert basket
    Patent number: 8557185
    Abstract: A pressure vessel arrangement comprises an external pressure vessel and at least one insert basket in the pressure vessel for receiving a substance to be treated which is exposable to a pressure fluid which is feedable to the pressure vessel and the insert basket. There is provided a control device for the internal pressure prevailing in the insert basket, in particular in the form of a switchable pressure compensation line connecting the interior of the insert basket directly to the surroundings, i.e. not via the pressure vessel.
    Type: Grant
    Filed: August 21, 2009
    Date of Patent: October 15, 2013
    Assignee: NATECO2 GmbH & Co. KG
    Inventors: Josef Schulmeyr, Stefan Geyer, Manfred Gehrig
  • Method for decaffeinating tea
    Patent number: 7858138
    Abstract: The invention relates to a method for decaffeinating tea (Camellia sinensis). The method involves of using, as an extraction agent, a carbon dioxide which is compressed of a pressure greater than 50 and up to 100 MPa.
    Type: Grant
    Filed: July 8, 2005
    Date of Patent: December 28, 2010
    Assignee: NATECO2 GmbH + Co. KG
    Inventors: Manfred Gehrig, Stefan Geyer, Josef Schulmeyr, Birgit Forchhammer, Karin Simon
  • PRESSURE VESSEL ARRANGEMENT COMPRISING AN EXTERNAL PRESSURE VESSEL AND AT LEAST ONE INSERT BASKET
    Publication number: 20100047135
    Abstract: A pressure vessel arrangement comprises an external pressure vessel and at least one insert basket in the pressure vessel for receiving a substance to be treated which is exposable to a pressure fluid which is feedable to the pressure vessel and the insert basket. There is provided a control device for the internal pressure prevailing in the insert basket, in particular in the form of a switchable pressure compensation line connecting the interior of the insert basket directly to the surroundings, i.e. not via the pressure vessel.
    Type: Application
    Filed: August 21, 2009
    Publication date: February 25, 2010
    Applicant: NATECO2 GmbH & Co. KG
    Inventors: Josef Schulmeyr, Stefan Geyer, Manfred Gehrig
  • Method for Decaffeinating Tea
    Publication number: 20070231445
    Abstract: The invention relates to a method for decaffeinating tea (Camellia sinensis). The method consists of using, as an extraction agent, a carbon dioxide which is compressed of a pressure greater than 50 and up to 100 MPa.
    Type: Application
    Filed: July 8, 2005
    Publication date: October 4, 2007
    Applicant: NATECO2 GMBH + CO. KG
    Inventors: Manfred Gehrig, Stefan Geyer, Josef Schulmeyr, Birgit Forchhammer, Karin Simon
  • Method of producing a xanthohumol-concentrated hop extracted and use thereof
    Publication number: 20040121040
    Abstract: In a method of producing a xanthohumol-concentrated hop extract, the xanthohumol-containing hop extract is extracted from a xanthohumol-containing hop raw material by highly compressed CO2 as a solvent at pressures above 500 bar and temperatures above 60° C.
    Type: Application
    Filed: December 1, 2003
    Publication date: June 24, 2004
    Applicant: NATECO2 GMBH & CO. KG
    Inventors: Adrian Forster, Josef Schulmeyr, Roland Schmidt, Karin Simon, Martin Ketterer, Birgit Forchhammer, Stefan Geyer, Manfred Gehrig
  • Process for the extraction of nonpolar constituents from plant material
    Patent number: 4946695
    Abstract: This invention relates to a process for extracting nonpolar constituents from natural substances such as hops with simultaneous separation of residues of nonpolar plant protectives (fungicides/insecticides). In a first step, the plant protective as well as other ingredients that are soluble under the chosen conditions is extracted with compressed gases, and in a subsequent stage, the dissolved mixture is passed through an adsorbent and the plant protective is selectively removed from the mixture.
    Type: Grant
    Filed: March 31, 1989
    Date of Patent: August 7, 1990
    Assignee: Hopfen-Extraktion HVG Bart, Raiser & Co.
    Inventors: Adrian Forster, Stefan Geyer, Josef Schulmeyr, Roland Schmidt, Manfred Gehrig
  • Process for the production of decaffeinated tea
    Patent number: 4938977
    Abstract: By the extraction with CO.sub.2 at 60 to 150 bar and 20.degree. to 70.degree. C., an aroma enriched fraction is taken from the moistened black tea, said fraction being added again to already decaffeinated and dried tea. Decaffeination starts after the aroma fraction has been obtained by pumping carbon dioxide at a pressure of between 150 to 500 bar and a temperature of between 10.degree. to 100.degree. C. through a bulk moistened tea. The solvent charged with caffeine is passed over an adsorber or purified by reduction of density.
    Type: Grant
    Filed: May 11, 1989
    Date of Patent: July 3, 1990
    Assignee: Hopfen-Extraktrion HVG Barth, Raiser & Co.
    Inventors: Manfred Gehrig, Adrian Forster
  • Process for the extraction of nonpolar constituents of hops
    Patent number: 4842878
    Abstract: The invention relates to a process for extracting nonpolar constituents from hops with simultaneous separation of residues of nonpolar plant protectives. In a first step the plant protective as well as other ingredients that are soluble under the chosen conditions are extracted with compressed gases, and in a subsequent stage the dissolved mixture is passed through an adsorbent and the plant protective is selectively removed from the mixture.
    Type: Grant
    Filed: September 24, 1987
    Date of Patent: June 27, 1989
    Assignee: Hopfen-Extraktion HVG Bart, Raiser & Co.
    Inventors: Adrian Forster, Stefan Geyer, Josef Schulmeyr, Roland Schmidt, Manfred Gehrig
  • Process for the extraction of hop substances
    Patent number: 4640841
    Abstract: There is provided a novel procedure for the extraction of a high proportion of the potential bitterness resins from hops by extracting the hops with super critical carbon dioxide at pressures of about 100 to 300 bar temperatures above 100.degree. C.
    Type: Grant
    Filed: December 18, 1984
    Date of Patent: February 3, 1987
    Assignee: Hopfenextraktion HVG Barth, Raiser & Co.
    Inventors: Adrian Forster, Manfred Gehrig
  • Recovery of caffeine adsorbed to activated carbon
    Patent number: 4540784
    Abstract: The invention relates to a process for recovering caffeine adsorbed to activated carbon by treating the loaded activated carbon with formic acid.
    Type: Grant
    Filed: April 18, 1983
    Date of Patent: September 10, 1985
    Assignee: Hag GF Aktiengesellschaft
    Inventors: Otto G. Vitzthum, Peter Werkhoff, Manfred Gehrig
  • Regeneration of caffeine-loaded activated carbon with hot water
    Patent number: 4506072
    Abstract: The invention relates to a process for recovering caffeine adsorbed to activated carbon with simultaneous regeneration of the activated carbon in which the caffeine-loaded activated carbon is treated with water at a pressure of at least 86 bar and at a temperature of at least 300.degree. C.
    Type: Grant
    Filed: April 18, 1983
    Date of Patent: March 19, 1985
    Assignee: Hag GF Aktiengesellschaft
    Inventors: Manfred Gehrig, Manfred Barthels, Hans Wienges