Patents Assigned to Compass Minerals USA Inc.
  • Process of converting potassium sulfate to potassium hydrogen sulfate
    Patent number: 10981839
    Abstract: The present disclosure provides a method of increasing the concentration of K2O in an aqueous solution. The method comprises reacting potassium sulfate with an acidic compound to yield a product that includes potassium hydrogen sulfate. The product can be used to supplement crops in need of potassium. The product can also have other nutrients added to it, depending on the desired end use. Advantageously, these products increase yield as compared to prior art products.
    Type: Grant
    Filed: November 7, 2019
    Date of Patent: April 20, 2021
    Assignee: Compass Minerals USA Inc.
    Inventors: Robert A. Geiger, Kristopher Lee Shelite, Steffen M. Ball, Vatren Jurin
  • Time-release molybdenum fertilizer
    Patent number: 10633299
    Abstract: The present invention provides a system to aid in the time-release of molybdenum in soil. The system comprises a dry, powdered blend of a calcium source, a molybdenum source, and a second source of calcium and/or molybdenum. The blend is preferably coated onto a dry agronomic carrier (e.g., urea) for application to soil. Advantageously, the calcium sources sequentially contribute to making the soil pH more molybdenum-friendly (i.e., the pH is increased) for an extended period of time.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: April 28, 2020
    Assignee: Compass Minerals USA Inc.
    Inventors: Elliott Martin, Robert A. Geiger, Mark Goodwin