Patents by Inventor Douglas A. Walter

Douglas A. Walter 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: 20180036529
    Abstract: The present invention provides a system and method for measuring the impedance of one more target cells before and after an electroporation protocol has been applied to the cells. The result of the impedance measurement provides a feedback control that can be implemented during and/or after the electroporation protocol to customize the electrical treatment for a particular target cell or cellular tissue.
    Type: Application
    Filed: September 29, 2017
    Publication date: February 8, 2018
    Applicant: University of South Florida
    Inventor: Douglas Walter Brown
  • Patent number: 9846951
    Abstract: A method may include obtaining an image that includes a connected component that includes a set of pixels, calculating a representative color for the set of pixels, mapping the representative color to an application color in an application color palette of an application, and generating an electronic document that includes a revised version of the connected component in the application color.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: December 19, 2017
    Assignee: Konica Minolta Laboratory U.S.A., Inc.
    Inventors: Jason James Grams, Douglas Walter Obrecht, Stuart Guarnieri
  • Patent number: 9796823
    Abstract: Films suitable for shrink film applications are disclosed comprising at least one heterogeneous ethylene interpolymer having a short chain branching distribution profile index, DPISCB, that satisfies the formula: ?1?DPISCB?1. The at least one heterogeneous ethylene interpolymer has a density from about 0.911 g/cm3 to about 0.942 g/cm3, a melt index from about 0.2 dg/min to about 3.5 dg/min and is produced using an in-line Ziegler-Natta catalyst. Additional embodiments include shrink films prepared from blends of at least one heterogeneous ethylene interpolymer and at least one high pressure ethylene polymer. The disclosed shrink films have improved puncture strength and machine direction shrink tunnel shrink force relative to control shrink films of the same composition but the control heterogeneous ethylene interpolymer, produced with a batch Ziegler-Natta catalyst, has a DPISCB greater than 1.0.
    Type: Grant
    Filed: July 7, 2016
    Date of Patent: October 24, 2017
    Assignee: NOVA Chemicals (International) S.A.
    Inventors: XiaoChuan Wang, Douglas Walter Checknita, John Leonard Bayley
  • Publication number: 20170297089
    Abstract: In one example, a sand core for use in a sand casting process includes a core body comprising a sand composition, the sand composition including sand and a binder; and a burnable fuse extending within the core body along a path and out of a surface of the core body, wherein the burnable fuse is configured such than when the fuse is ignited, the fuse burns within the core body to substantially remove the fuse and form a venting tunnel along the path within the core body with an opening in the surface.
    Type: Application
    Filed: April 13, 2016
    Publication date: October 19, 2017
    Inventor: Douglas Walter Howard
  • Publication number: 20170287171
    Abstract: A method may include obtaining an image that includes a connected component that includes a set of pixels, calculating a representative color for the set of pixels, mapping the representative color to an application color in an application color palette of an application, and generating an electronic document that includes a revised version of the connected component in the application color.
    Type: Application
    Filed: March 31, 2016
    Publication date: October 5, 2017
    Applicant: Konica Minolta Laboratory U.S.A., Inc.
    Inventors: Jason James Grams, Douglas Walter Obrecht, Stuart Guarnieri
  • Patent number: 9617994
    Abstract: A sliding vane, positive displacement pump is provided which includes a dual mechanical seal that protects against leakage from a pump chamber while also reducing slip across rotor end faces. The dual mechanical seal may be formed as a cartridge seal that is readily demountable from the pump for replacement and service, and is retrofittable to existing pumps to improve the performance thereof. The pump may integrally include a dual mechanical seal, or the mechanical seal assembly may be provided for use by itself or in combination with a replaceable head ring that can be installed on existing pumps for repair thereof or for a retrofit upgrade of such existing pump.
    Type: Grant
    Filed: April 17, 2015
    Date of Patent: April 11, 2017
    Assignee: Delaware Capital Formation, Inc.
    Inventors: Michael Douglas Walters, Michael Thomas Mitchell
  • Publication number: 20170015801
    Abstract: Films suitable for shrink film applications are disclosed comprising at least one heterogeneous ethylene interpolymer having a short chain branching distribution profile index, DPISCB, that satisfies the formula: ?1?DPISCB?1. The at least one heterogeneous ethylene interpolymer has a density from about 0.911 g/cm3 to about 0.942 g/cm3, a melt index from about 0.2 dg/min to about 3.5 dg/min and is produced using an in-line Ziegler-Natta catalyst. Additional embodiments include shrink films prepared from blends of at least one heterogeneous ethylene interpolymer and at least one high pressure ethylene polymer. The disclosed shrink films have improved puncture strength and machine direction shrink tunnel shrink force relative to control shrink films of the same composition but the control heterogeneous ethylene interpolymer, produced with a batch Ziegler-Natta catalyst, has a DPISCB greater than 1.0.
    Type: Application
    Filed: July 7, 2016
    Publication date: January 19, 2017
    Applicant: NOVA Chemicals (International) S.A.
    Inventors: XiaoChuan Wang, Douglas Walter Checknita, John Leonard Bayley
  • Publication number: 20150347610
    Abstract: Methods and apparatus for modifying a plurality of markup language files are disclosed. In general, web pages are renamed as they are brought in to a document review application, and a data structure is created that associates the old name of each web page with the new name of each web page. Then, all of the links in the web pages are modified to also use the new names. As a result, users of the document review application may review the web pages with functional links.
    Type: Application
    Filed: June 3, 2014
    Publication date: December 3, 2015
    Applicant: kCura Corporation
    Inventors: Gaurav Vempati, Douglas Walter Stevens
  • Publication number: 20150300352
    Abstract: A sliding vane, positive displacement pump is provided which includes a dual mechanical seal that protects against leakage from a pump chamber while also reducing slip across rotor end faces. The dual mechanical seal may be formed as a cartridge seal that is readily demountable from the pump for replacement and service, and is retrofittable to existing pumps to improve the performance thereof. The pump may integrally include a dual mechanical seal, or the mechanical seal assembly may be provided for use by itself or in combination with a replaceable head ring that can be installed on existing pumps for repair thereof or for a retrofit upgrade of such existing pump.
    Type: Application
    Filed: April 17, 2015
    Publication date: October 22, 2015
    Inventors: Michael Douglas Walters, Michael Thomas Mitchell
  • Patent number: 9074082
    Abstract: A dual reactor solution polymerization process gives high density polyethylene compositions containing a first ethylene copolymer and a second ethylene copolymer and which have high dimensional stability, excellent processability as well as good organoleptic properties and reasonable stress cracking resistance. The polyethylene compositions are suitable for compression molding or injection molding applications and are useful, for example, in the manufacture of caps and closures for bottles, and for example, in bottles containing non-pressurized liquids.
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: July 7, 2015
    Assignee: NOVA Chemicals (International) S.A.
    Inventors: XiaoChuan Wang, Yves Lacombe, Douglas Walter Checknita, Mark Rejman, Matthew Zaki Botros, Renee Laurel Anseeuw
  • Patent number: 8838266
    Abstract: The present invention discloses an improved insert machine for inserting flat material into an open pocket and, more particularly, to a straight line insert machine employed for printed matter such as newspapers. The machine includes an all-electronic control system for controlling machine functions. The control system includes at least one central control computer running under software control and a plurality of network controllers, all coupled together via a controller area network (CAN) bus. Electronic control messages for controlling machine elements are sent among the computers and controllers using a novel message protocol to enable both broadcast messages and individual messages to be employed.
    Type: Grant
    Filed: August 18, 2009
    Date of Patent: September 16, 2014
    Assignee: Muller Martini Corp.
    Inventors: Eric Bader, Peter Braschoss, Gary Davenport, Robert James, Darrell Pav, Harry Noll, Randy Seidel, Douglas Walter, Barry Yeakel, Daniel Langengger
  • Publication number: 20140171582
    Abstract: A dual reactor solution polymerization process gives high density polyethylene compositions containing a first ethylene copolymer and a second ethylene copolymer and which have high dimensional stability, excellent processability as well as good organoleptic properties and reasonable stress cracking resistance. The polyethylene compositions are suitable for compression molding or injection molding applications and are useful, for example, in the manufacture of caps and closures for bottles, and for example, in bottles containing non-pressurized liquids.
    Type: Application
    Filed: December 6, 2013
    Publication date: June 19, 2014
    Applicant: NOVA CHEMICALS (INTERNATIONAL) S.A.
    Inventors: XiaoChuan Wang, Yves Lacombe, Douglas Walter Checknita, Mark Rejman, Matthew Zaki Botros, Renee Laurel Anseeuw
  • Patent number: 8630488
    Abstract: A method for creating a duotone color effect from a lightest color and a darkest color, including: obtaining a source image in a red-green-blue (RGB) color space; obtaining a lightest color RGB tuple and a darkest color RGB tuple; generating an international color consortium (ICC) device link profile based on the lightest color RGB tuple and the darkest color RGB tuple; and converting the source image in RGB color space to a duotone image in RGB color space using a color conversion function with the ICC device link profile.
    Type: Grant
    Filed: November 30, 2011
    Date of Patent: January 14, 2014
    Assignee: Konica Minolta Laboratory U.S.A., Inc.
    Inventor: Douglas Walter Obrecht
  • Patent number: 8571310
    Abstract: A method for creating a luminance effect, including: obtaining a source image in a red-green-blue (RGB) color space; obtaining a luminance effect parameter; generating an international color consortium (ICC) device link profile based on the luminance effect parameter; and converting the source image in RGB color space to a final image in RGB color space using a color conversion function with the ICC device link profile.
    Type: Grant
    Filed: November 30, 2011
    Date of Patent: October 29, 2013
    Assignee: Konica Minolta Laboratory U.S.A., Inc.
    Inventor: Douglas Walter Obrecht
  • Publication number: 20130136344
    Abstract: A method for creating a duotone color effect from a lightest color and a darkest color, including: obtaining a source image in a red-green-blue (RGB) color space; obtaining a lightest color RGB tuple and a darkest color RGB tuple; generating an international color consortium (ICC) device link profile based on the lightest color RGB tuple and the darkest color RGB tuple; and converting the source image in RGB color space to a duotone image in RGB color space using a color conversion function with the ICC device link profile.
    Type: Application
    Filed: November 30, 2011
    Publication date: May 30, 2013
    Applicant: KONICA MINOLTA LABORATORY U.S.A., INC.
    Inventor: Douglas Walter Obrecht
  • Publication number: 20130136345
    Abstract: A method for creating a luminance effect, including: obtaining a source image in a red-green-blue (RGB) color space; obtaining a luminance effect parameter; generating an international color consortium (ICC) device link profile based on the luminance effect parameter; and converting the source image in RGB color space to a final image in RGB color space using a color conversion function with the ICC device link profile.
    Type: Application
    Filed: November 30, 2011
    Publication date: May 30, 2013
    Applicant: Konica Minolta Laboratory U.S.A., Inc.
    Inventor: Douglas Walter Obrecht
  • Patent number: 8051469
    Abstract: A cryptographic session key is utilized to maintain security of a digital identity. The session key is valid only for a limited period of time. Additional security is provided via a bimodal credential allowing different levels of access to the digital identify. An identity token contains pertinent information associated with the digital identity. The identity token is encrypted utilizing public-key cryptography. An identifier utilized to verify the validity of the digital identity is encrypted with the cryptographic session key. The encrypted identity token and the encrypted identifier are provided to a service for example. The service decrypts the encrypted identity token utilizing public key cryptography, and decrypts, with the cryptographic session key obtained from the identity token, the encrypted identifier. If the identifier is determined to be valid, the transaction proceeds normally. If the identifier is determined to be invalid, the transaction is halted.
    Type: Grant
    Filed: November 17, 2009
    Date of Patent: November 1, 2011
    Assignee: Microsoft Corporation
    Inventors: John P. Shewchuk, Arun K. Nanda, Donald F. Box, Douglas A. Walter, Hervey O. Wilson
  • Patent number: 8036414
    Abstract: This invention provides an audio speaker with improved physical safety isolation between a voice coil and other electrically live elements.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: October 11, 2011
    Inventors: John B. French, Douglas Walter Hansen
  • Patent number: 7860989
    Abstract: In a computerized system, a sending computer system and recipient computer system exchange an interchange format message in a resource-efficient manner. For example, a transformation writer at the sending computer system selects and transforms only one or few of a plurality of units of the message at the time. The transformed message units are then streamed to the recipient computer system in accordance with a relevant transformation standard, such as the canonicalization standard in the case of XML messages. A transformation reader at the recipient computer system transforms the messages using a buffer big enough for received message units, and passes the transformed units to a file. Thus, the transformation writer acts as a stream writer to pass a message, and the transformation reader acts as a stream reader at the recipient computer system.
    Type: Grant
    Filed: February 2, 2005
    Date of Patent: December 28, 2010
    Assignee: Microsoft Corporation
    Inventors: Vaithialingam B. Balayoghan, Douglas A. Walter, Giovanni Della-Libera
  • Patent number: 7836489
    Abstract: The present invention extends to methods, systems, and computer program products for selecting policy for compatible communication. Hierarchical policy document data structures represent communication (e.g., security) aspects and options such that lower aspects and options are accessed in the context of corresponding higher aspects and options to define applicable scope. Use of a hierarchical description also facilitates separation of what is being protected from how it is being protected thereby allowing security policy to be considered at different locations of a description document.
    Type: Grant
    Filed: June 15, 2006
    Date of Patent: November 16, 2010
    Assignee: Microsoft Corporation
    Inventors: Christopher G. Kaler, Douglas A. Walter, Martin Gudgin