Patents by Inventor David Luedtke

David Luedtke 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: 11959050
    Abstract: The invention includes ware detergent compositions which provides superior cleaning and removal of oily and fatty soils, without the production of excessive foam. According to the invention applicants have discovered that use of a quaternary cationic surfactant in combination with a nonionic low foaming surfactant can provide oily soil removal from ware that is superior to traditional warewash detergent formulations. Compositions for alkaline, preferably solid, warewash detergents are disclosed, as well as their use in dish machines and methods of manufacture.
    Type: Grant
    Filed: January 5, 2023
    Date of Patent: April 16, 2024
    Assignee: ECOLAB USA INC.
    Inventors: David Dotzauer, Richard Fu, Lisa M. Sanders, Monique Roerdink Lander, John Mansergh, Carter M. Silvernail, Matthew Luedtke
  • Patent number: 11950595
    Abstract: Antimicrobial compositions including at least one acid and at least one anionic surfactant are provided. In particular, food contact antimicrobial compositions including at least one acid and at least one anionic surfactant provide a no-rinse compositions efficacious against Norovirus, having acceptable use solution pH that do not require use of personal protective equipment (PPE), are surface compatible and do not leave residues on treated surfaces are provided. Methods of cleaning a surface with the compositions are also provided.
    Type: Grant
    Filed: April 29, 2021
    Date of Patent: April 9, 2024
    Assignee: Ecolab USA Inc.
    Inventors: Catherine Hanson, Junzhong Li, David D. McSherry, Stacy Fawbush, Kaitlin Lake, Gerard Hinrichs, Joshua Luedtke, Richard Staub, Derrick Anderson
  • Patent number: 11937602
    Abstract: Antimicrobial compositions including at least one acid and at least one anionic surfactant are provided. In particular, food contact antimicrobial compositions including at least one acid and at least one anionic surfactant provide efficacious virucidal activity, including against Norovirus, having acceptable use solution pH that do not require use of personal protective equipment (PPE), are surface compatible and do not leave residues on treated surfaces. Methods of cleaning a surface with the compositions are also provided and may beneficially eliminate the need to rinse the antimicrobial compositions after use.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: March 26, 2024
    Assignee: ECOLAB USA INC.
    Inventors: Wendy Lo, Derrick Anderson, Erik Olson, Catherine Hanson, Junzhong Li, David D. McSherry, Stacy Fawbush, Kaitlin Lake, Gerard Hinrichs, Joshua Luedtke, Richard Staub
  • Publication number: 20050207275
    Abstract: The present invention relates to a mixing and stirring device suitable for stirring food. In an embodiment, the mixing and stirring device includes a shaft with a locking jig to fit into a kitchen appliance electric mixer and a substantially cylindrical shaped auger stirring head extending laterally from the shaft, wherein the auger stirring head includes twisted surfaces cut on anti-parallel surfaces forming a set of blade edges. The auger stirring head also has concave surfaces to generate uplift movements and blade edges to drill and cut solid content food without causing spillage. The cross-section of the shaft may be rectangular, triangular and circular. The mixing and stirring device may be coated for protection from scratches, corrosion, and for easy cleaning. In another embodiment, the stirring head is a tear drop shape. In yet another embodiment, the mixing and stirring device is a disposable hand stirring and mixing device.
    Type: Application
    Filed: March 19, 2004
    Publication date: September 22, 2005
    Inventor: David Luedtke
  • Patent number: 6857954
    Abstract: The present invention relates to a seat or chair cooling apparatus. In an embodiment the seat cooling apparatus cools the back of a user without the need of forced air. The seat cooling apparatus includes an array of conduits held in place by a set of supports to form a heat exchanger. Heat from the contact surfaces is removed by free convection, an upward air movement due to density difference. When the seat cooling apparatus is in the preferred substantially vertical arrangement, the warm air exiting the conduits is replaced by cooler air entering the conduits. A seat securing attachment secures the heat exchanger components to a seat. The seat cooling apparatus shapes into the back of the user to provide comfort that is effective in cooling. The seat cooling apparatus can be light weight, portable, and occupies little space, can be quickly installed and removed, easily cleaned and is very low cost to manufacture.
    Type: Grant
    Filed: February 28, 2003
    Date of Patent: February 22, 2005
    Assignee: Front-End Solutions, Inc.
    Inventor: David Luedtke
  • Publication number: 20040173649
    Abstract: The present invention is a transport device for bulky objects such as boogie boards, surfboards and snowboards having an existing anchored attachment on the board. In an embodiment, a strap is strapped around the boogie board, and the anchored leash is linked to the strap forming a shoulder carrying strap. In another embodiment, a strap holds a plurality of boogie boards together and the individuals leash form a shoulder strap to be carried at the same time. In another embodiment, a strap takes the form of an elastic cord with hooks (e.g. a bungee cord) forming a shoulder strap with the anchored board leash. This strap carry system can be extended to other applications beyond boogie board, surf board, snowboard, skis and any objects where there is an anchored attachment.
    Type: Application
    Filed: March 5, 2003
    Publication date: September 9, 2004
    Inventor: David Luedtke
  • Publication number: 20040171343
    Abstract: The present invention relates to a seat or chair cooling apparatus. In an embodiment the seat cooling apparatus cools the back of a user without the need of forced air. The seat cooling apparatus includes an array of conduits held in place by a set of supports to form a heat exchanger. Heat from the contact surfaces is removed by free convection, an upward air movement due to density difference. When the seat cooling apparatus is in the preferred substantially vertical arrangement, the warm air exiting the conduits is replaced by cooler air entering the conduits. A seat securing attachment secures the heat exchanger components to a seat. The seat cooling apparatus shapes into the back of the user to provide comfort that is effective in cooling. The seat cooling apparatus can be light weight, portable, and occupies little space, can be quickly installed and removed, easily cleaned and is very low cost to manufacture.
    Type: Application
    Filed: February 28, 2003
    Publication date: September 2, 2004
    Inventor: David Luedtke