Patents by Inventor Stefan May

Stefan May 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: 10588399
    Abstract: A fluid delivery system of a dental cleaning appliance includes a pump for drawing a working fluid through a fluid inlet, a hydraulic actuator for receiving working fluid from the pump, a drive for actuating the pump, and a nozzle having a fluid outlet for ejecting working fluid from the appliance. The drive includes a motor and a control circuit for operating the motor. The control circuit is configured to detect stalling of the motor in response to the load applied to the pump by the pressurized working fluid stored in the accumulator, and to deactivate the motor when stalling of the motor has been detected.
    Type: Grant
    Filed: November 3, 2017
    Date of Patent: March 17, 2020
    Assignee: Dyson Technology Limited
    Inventors: Robert Stefan Wronski, Martin Szymon Gutkowski, Alexander David May
  • Publication number: 20190310943
    Abstract: Disclosed herein are system, method, and computer program product embodiments for cache partitioning to accelerate concurrent workload performance of in-memory databases. An embodiment operates by storing a first bitmask, associating the first bitmask with a first processor core, setting a subset of the bits of the first bitmask, wherein the subset of the bits of the first bitmask represents a first portion of shared last-level cache, and wherein any part of the first bitmask excluding the subset of the bits of the first bitmask represents a second portion of the lowest-level cache, and disallowing eviction of any cache line in the second portion of the lowest-level cache by the first processor core.
    Type: Application
    Filed: April 4, 2018
    Publication date: October 10, 2019
    Inventors: Stefan Noll, Norman May, Alexander Martin Böhm, Jens Thilo Teubner
  • Patent number: 6357800
    Abstract: A data carrier with at least one halftone images 10 represented by structural elements 12, whereby a predetermined symmetrical widening of structural elements 12 represents a corresponding gray level of halftone image 10. Image 10 has predetermined areas 14, 16 and 22 each having a predetermined number or screen frequency of structural elements 12, the screen frequency of structural elements 12 per unit area of area 14, 16 and 22 being different between at least two areas 14, 16 and 22 and/or structural elements 12 being offset from each other in at least two areas 14, 16 and 22. A data carrier with such a halftone image 10 acquires a moiré pattern in at least predetermined areas of halftone image 10 when copied, so that a copy of the data carrier is recognizable immediately and with the naked eye (FIG. 1).
    Type: Grant
    Filed: October 5, 1998
    Date of Patent: March 19, 2002
    Assignee: Giesecke & Devrient GmbH
    Inventors: Johann Müller, Stefan May
  • Patent number: 4659113
    Abstract: A method of screening half-tone picture themes, in which the gray tones of the half-tone picture theme are reproduced by changes in the structural width of a basic screen structure having any desired form. The assignment of a gray tone area of the half-tone picture theme to the screen structure width reproducing this gray tone area may be selectively determined. In a photographic version of the inventive method (FIG. 1), a basic screen structure 1 of any form is prepared and used to produce broadening screen structures as negative films 9,11. The same number of tone separations 20,22 is produced as negative films from the picture theme 13 to be screened, each of which tone separations reproduces a certain gray tone area of the half-tone picture theme which can be adjusted by the exposure time.
    Type: Grant
    Filed: July 29, 1985
    Date of Patent: April 21, 1987
    Assignee: GAO Gesselschaft fur Automation und Organisation mbH
    Inventors: Hans Muller, Stefan May
  • Patent number: 4557596
    Abstract: A method of screening half-tone picture themes, in which the gray tones of the half-tone picture theme are reproduced by changes in the structural width of a basic screen structure having any desired form. The assignment of a gray tone area of the half-tone picture theme to the screen structure width reproducing this gray tone area may be selectively determined. In a photographic version of the inventive method (FIG. 1), a basic screen structure 1 of any form is prepared and used to produce broadening screen structures as negative films 9,11. The same number of tone separations 20,22 is produced as negative films from the picture theme 13 to be screened, each of which tone separations reproduces a certain gray tone area of the half-tone picture theme which can be adjusted by the exposure time.
    Type: Grant
    Filed: March 30, 1983
    Date of Patent: December 10, 1985
    Assignee: GAO Gesellschaft fur Automation und Organisation mbH
    Inventors: Hans Muller, Stefan May
  • Patent number: 4513992
    Abstract: A data carrier, in particular check paper, having a picture theme printed on by the dot screen, grain screen, line-halftone combination or special screen techniques or as a line copy, which is printed over by a security pattern serving the purpose of protecting the data carrier. The picture theme is interrupted by a negative security pattern adapted to the security pattern, into which negative security pattern the security pattern is printed congruently. The lines of the negative security pattern are preferably wider than the lines of the security pattern, so that the lines of the security pattern integrated into the picture theme are at a certain distance from the lines of the negative security pattern in the entire picture area and do not touch the picture theme.
    Type: Grant
    Filed: April 12, 1984
    Date of Patent: April 30, 1985
    Assignee: GAO Gesellschaft fur Automation and Organisation mbH
    Inventors: Stefan May, Hans Muller
  • Patent number: 4459020
    Abstract: A data carrier, in particular check paper, having a picture theme printed on by the dot screen, grain screen, line-half-tone combination or special screen techniques or as a line copy, which is printed over by a security pattern serving the purpose of protecting the data carrier. The picture theme is interrupted by a negative security pattern adapted to the security pattern, into which negative security pattern the security pattern is printed congruently. The lines of the negative security pattern are preferably wider than the lines of the security pattern, so that the lines of the security pattern integrated into the picture theme are at a certain distance from the lines of the negative security pattern in the entire picture area and do not touch the picture theme.
    Type: Grant
    Filed: October 2, 1981
    Date of Patent: July 10, 1984
    Assignee: GAO Gesellschaft fur Automation und Organisation mbH
    Inventors: Stefan May, Hans Muller