Patents by Inventor Stefan Richter

Stefan Richter 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: 11308090
    Abstract: A source table organized into a set of batch units is accessed. The source table comprises a column of data corresponding to a semi-structured data type. One or more indexing transformations for an object in the column are generated. The generating of the one or more indexing transformation includes converting the object to one or more stored data types. A pruning index is generated for the source table based in part on the one or more indexing transformations. The pruning index comprises a set of filters that index distinct values in each column of the source table, and each filter corresponds to a batch unit in the set of batch units. The pruning index is stored in a database with an association with the source table.
    Type: Grant
    Filed: August 4, 2021
    Date of Patent: April 19, 2022
    Assignee: Snowflake Inc.
    Inventors: Mahmud Allahverdiyev, Thierry Cruanes, Ismail Oukid, Stefan Richter
  • Patent number: 11308089
    Abstract: A source table organized into a set of micro-partitions is accessed by a network-based data warehouse. A pruning index is generated based on the source table. The pruning index comprises a set of filters that indicate locations of distinct values in each column of the source table. A query directed at the source table is received at the network-based data warehouse. The query is processed using the pruning index. The processing of the query comprises pruning the set of micro-partitions of the source table to scan for data matching the query, the pruning of the plurality of micro-partitions comprising identifying, using the pruning index, a sub-set of micro-partitions to scan for the data matching the query.
    Type: Grant
    Filed: June 25, 2021
    Date of Patent: April 19, 2022
    Assignee: Snowflake Inc.
    Inventors: Thierry Cruanes, Benoit Dageville, Ismail Oukid, Stefan Richter
  • Patent number: 11275739
    Abstract: A table organized into a set of batch units is accessed. A set of N-grams are generated for a data value in the source table. The set of N-grams include a first N-gram of a first length and a second N-gram of a second length where the first N-gram corresponds to a prefix of the second N-gram. A set of fingerprints are generated for the data value based on the set of N-grams. The set of fingerprints include a first fingerprint generated based on the first N-gram and a second fingerprint generated based on the second N-gram and the first fingerprint. A pruning index that indexes distinct values in each column of the source table is generated based on the set of fingerprints and stored in a database with an association with the source table.
    Type: Grant
    Filed: September 27, 2021
    Date of Patent: March 15, 2022
    Assignee: Snowflake Inc.
    Inventors: Ismail Oukid, Stefan Richter
  • Patent number: 11275738
    Abstract: A table organized into a set of batch units is accessed. A set of N-grams are generated for a data value in the source table. The set of N-grams include a first N-gram of a first length and a second N-gram of a second length where the first N-gram corresponds to a prefix of the second N-gram. A set of fingerprints are generated for the data value based on the set of N-grams. The set of fingerprints include a first fingerprint generated based on the first N-gram and a second fingerprint generated based on the second N-gram and the first fingerprint. A pruning index that indexes distinct values in each column of the source table is generated based on the set of fingerprints and stored in a database with an association with the source table.
    Type: Grant
    Filed: September 24, 2021
    Date of Patent: March 15, 2022
    Assignee: Snowflake Inc.
    Inventors: Ismail Oukid, Stefan Richter
  • Publication number: 20220012247
    Abstract: A table organized into a set of batch units is accessed. A set of N-grams are generated for a data value in the source table. The set of N-grams include a first N-gram of a first length and a second N-gram of a second length where the first N-gram corresponds to a prefix of the second N-gram. A set of fingerprints are generated for the data value based on the set of N-grams. The set of fingerprints include a first fingerprint generated based on the first N-gram and a second fingerprint generated based on the second N-gram and the first fingerprint. A pruning index that indexes distinct values in each column of the source table is generated based on the set of fingerprints and stored in a database with an association with the source table.
    Type: Application
    Filed: September 27, 2021
    Publication date: January 13, 2022
    Inventors: Ismail Oukid, Stefan Richter
  • Publication number: 20220012246
    Abstract: A table organized into a set of batch units is accessed. A set of N-grams are generated for a data value in the source table. The set of N-grams include a first N-gram of a first length and a second N-gram of a second length where the first N-gram corresponds to a prefix of the second N-gram. A set of fingerprints are generated for the data value based on the set of N-grams. The set of fingerprints include a first fingerprint generated based on the first N-gram and a second fingerprint generated based on the second N-gram and the first fingerprint. A pruning index that indexes distinct values in each column of the source table is generated based on the set of fingerprints and stored in a database with an association with the source table.
    Type: Application
    Filed: September 24, 2021
    Publication date: January 13, 2022
    Inventors: Ismail Oukid, Stefan Richter
  • Publication number: 20220001149
    Abstract: The current document is directed to improved PTA methodologies that significantly decrease the risks of persistent blood-vessel-wall distention and subsequent restenosis and the risks of PTA-induced dissection, hematoma, and pseudoaneurysm when used to treat blood vessels. Similar improved percutaneous-transluminal-interventional methods are used to treat non-vascular vessels. The improved methods include initial selection of balloon length and inflation pressure for initial treatment of primary lesions to minimize the risks of over-inflation and generation of undesirable localized forces during balloon inflation. The improved methods further include higher-pressure treatment of remaining secondary lesions that also minimizes the risks of over-inflation and generation of undesirable localized forces. The improved methods can be practiced using differently sized balloons and conventional instrumentation, but may be facilitated by use of balloon-length-adjustable catheters.
    Type: Application
    Filed: July 1, 2020
    Publication date: January 6, 2022
    Applicant: CTI Vascular AG
    Inventors: Marc Gianotti, Lisa Gianotti, Stefan Richter
  • Publication number: 20220004107
    Abstract: An optical arrangement for a lithography apparatus has a microsystem with a mirror array. A respective mirror of the mirror array is set up to reflect working light of the lithography apparatus on its front side and also a measuring beam on its rear side. One or more radiation sources, which are provided outside the microsystem, are set up to provide the respective measuring beam. One or more sensor units are set up to sense a tilting angle of a respective mirror in dependence on the respectively reflected measuring beam.
    Type: Application
    Filed: September 21, 2021
    Publication date: January 6, 2022
    Inventors: Jan Horn, Stefan Richter
  • Publication number: 20210397619
    Abstract: A query directed at a table organized into a set of batch units is received. The query comprises a predicate for which values are unknown prior to runtime. A set of values for the predicate are determined based on the query. An index access plan is created based on the set of values. Based on the index access plan, the set of batch units are pruned using a pruning index associated with the table. The pruning index comprises a set of filters that index distinct values in each column of the table. The pruning of the set of batch units comprises identifying a subset of batch units to scan for data that satisfies the query. The subset of batch units of the table are scanned to identify data that satisfies the query.
    Type: Application
    Filed: August 31, 2021
    Publication date: December 23, 2021
    Inventors: Max Heimel, Ismail Oukid, Linnea Passing, Stefan Richter, Juliane K. Waack
  • Publication number: 20210365461
    Abstract: A source table organized into a set of batch units is accessed. The source table comprises a column of data corresponding to a semi-structured data type. One or more indexing transformations for an object in the column are generated. The generating of the one or more indexing transformation includes converting the object to one or more stored data types. A pruning index is generated for the source table based in part on the one or more indexing transformations. The pruning index comprises a set of filters that index distinct values in each column of the source table, and each filter corresponds to a batch unit in the set of batch units. The pruning index is stored in a database with an association with the source table.
    Type: Application
    Filed: August 4, 2021
    Publication date: November 25, 2021
    Inventors: Mahmud Allahverdiyev, Thierry Cruanes, Ismail Oukid, Stefan Richter
  • Publication number: 20210357411
    Abstract: A query directed at a source table organized into a set of batch units is received. The query includes a pattern matching predicate that specifies a search pattern. A set of N-grams are generated based on the search pattern. A pruning index associated with the source table is accessed. The pruning index comprises a set of filters that index distinct N-grams in each column of the source table. The pruning index is used to identify a subset of batch units to scan for matching data based on the set of N-grams generated for the search pattern. The query is processed by scanning the subset of batch units.
    Type: Application
    Filed: July 29, 2021
    Publication date: November 18, 2021
    Inventors: Thierry Cruanes, Benoit Dageville, Ismail Oukid, Stefan Richter
  • Publication number: 20210319025
    Abstract: A source table organized into a set of micro-partitions is accessed by a network-based data warehouse. A pruning index is generated based on the source table. The pruning index comprises a set of filters that indicate locations of distinct values in each column of the source table. A query directed at the source table is received at the network-based data warehouse. The query is processed using the pruning index. The processing of the query comprises pruning the set of micro-partitions of the source table to scan for data matching the query, the pruning of the plurality of micro-partitions comprising identifying, using the pruning index, a sub-set of micro-partitions to scan for the data matching the query.
    Type: Application
    Filed: June 25, 2021
    Publication date: October 14, 2021
    Inventors: Thierry Cruanes, Benoit Dageville, Ismail Oukid, Stefan Richter
  • Patent number: 11113286
    Abstract: A query directed at a source table organized into a set of batch units is received. The query includes a pattern matching predicate that specifies a search pattern. A set of N-grams are generated based on the search pattern. A pruning index associated with the source table is accessed. The pruning index comprises a set of filters that index distinct N-grams in each column of the source table. The pruning index is used to identify a subset of batch units to scan for matching data based on the set of N-grams generated for the search pattern. The query is processed by scanning the subset of batch units.
    Type: Grant
    Filed: March 31, 2021
    Date of Patent: September 7, 2021
    Assignee: Snowflake Inc.
    Inventors: Thierry Cruanes, Benoit Dageville, Ismail Oukid, Stefan Richter
  • Patent number: 11086875
    Abstract: A source table organized into a set of micro-partitions is accessed by a network-based data warehouse. A pruning index is generated based on the source table. The pruning index comprises a set of filters that indicate locations of distinct values in each column of the source table. A query directed at the source table is received at the network-based data warehouse. The query is processed using the pruning index. The processing of the query comprises pruning the set of micro-partitions of the source table to scan for data matching the query, the pruning of the plurality of micro-partitions comprising identifying, using the pruning index, a sub-set of micro-partitions to scan for the data matching the query.
    Type: Grant
    Filed: January 28, 2021
    Date of Patent: August 10, 2021
    Assignee: Snowflake Inc.
    Inventors: Thierry Cruanes, Benoit Dageville, Ismail Oukid, Stefan Richter
  • Publication number: 20210213828
    Abstract: It is provided an adjustment mechanism, comprising a closure flap for at least partially closing a closure opening on a vehicle, via which, when the closure flap is opened, a connection element for connecting a line and/or a port for topping up a liquid, in particular a fuel, is accessible, a drive for adjusting the closure flap by external force in response to an operator control event, and an electronic control unit which is coupled to the drive and by means of which the drive is activated to open the closure flap in response to an operator control event which is detected in a contactless manner, and, on the other hand, is automatically stopped or reversed in so far as, when the closure flap closes, a possible obstacle is detected in a contactless manner in the adjustment path of the closure flap by means of an anti-pinch mechanism.
    Type: Application
    Filed: January 13, 2017
    Publication date: July 15, 2021
    Inventors: Ralf DAIMINGER, Stefan RICHTER
  • Publication number: 20210216555
    Abstract: A query directed at a source table organized into a set of batch units is received. The query includes a pattern matching predicate that specifies a search pattern. A set of N-grams are generated based on the search pattern. A pruning index associated with the source table is accessed. The pruning index comprises a set of filters that index distinct N-grams in each column of the source table. The pruning index is used to identify a subset of batch units to scan for matching data based on the set of N-grams generated for the search pattern. The query is processed by scanning the subset of batch units.
    Type: Application
    Filed: March 31, 2021
    Publication date: July 15, 2021
    Inventors: Thierry Cruanes, Benoit Dageville, Ismail Oukid, Stefan Richter
  • Publication number: 20210200772
    Abstract: A source table organized into a set of micro-partitions is accessed by a network-based data warehouse. A pruning index is generated based on the source table. The pruning index comprises a set of filters that indicate locations of distinct values in each column of the source table. A query directed at the source table is received at the network-based data warehouse. The query is processed using the pruning index. The processing of the query comprises pruning the set of micro-partitions of the source table to scan for data matching the query, the pruning of the plurality of micro-partitions comprising identifying, using the pruning index, a sub-set of micro-partitions to scan for the data matching the query.
    Type: Application
    Filed: January 28, 2021
    Publication date: July 1, 2021
    Inventors: Thierry Cruanes, Benoit Dageville, Ismail Oukid, Stefan Richter
  • Publication number: 20210163280
    Abstract: MEMS devices include fluid confinement structures on either a fixed part of a substrate and/or on a suspended element. The fluid confinement structures may be configured to confine a viscoelastic fluid in a limited part of a gap between one or more vertical sidewalls of both the fixed part of the substrate and either the suspended element or the drive beam or both the suspended element and drive beam such that one part of the gap is bridged by the fluid and another part of the gap is not, The structures may be configured to prevent flow of the fluid to other parts of the gap.
    Type: Application
    Filed: July 12, 2018
    Publication date: June 3, 2021
    Inventors: Stefan Richter, Johannes Kindt, Veljko Milanovic
  • Patent number: 11016975
    Abstract: A query directed at a source table organized into a set of batch units is received. The query includes a pattern matching predicate that specifies a search pattern. A set of N-grams are generated based on the search pattern. A pruning index is used to identify a subset of batch units to scan for matching data based on the set of N-grams generated for the search pattern. The pruning index indexes distinct N-grams in the source table. The query is processed by scanning the subset of batch units.
    Type: Grant
    Filed: October 30, 2020
    Date of Patent: May 25, 2021
    Assignee: Snowflake Inc.
    Inventors: Thierry Cruanes, Benoit Dageville, Ismail Oukid, Stefan Richter
  • Patent number: 11003090
    Abstract: The disclosure relates to a lithography apparatus for writing to substrate wafers. The apparatus includes: a light generating device including one or a plurality of light sources for generating light; a writing device; a light transferring device including a number of optical waveguides for transferring the light from the light generating device to a writing device, the writing device including a plurality of individually controllable write heads for projecting the light from the one or the plurality of light sources in different regions of a substrate wafer; a transport device for moving the substrate wafer relative to the writing device in a predefined transport direction; and a control device for controlling the writing process on the substrate wafer.
    Type: Grant
    Filed: January 31, 2020
    Date of Patent: May 11, 2021
    Assignee: Carl Zeiss SMT GmbH
    Inventors: Stefan Richter, Enrico Geissler, Dirk Doering, Lakshmanan Senthil Kumar, Guenter Rudolph, Martin Voelcker, Markus Deguenther