Patents by Inventor Robert Andrew Smith

Robert Andrew Smith 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).

  • Trap
    Patent number: 12167727
    Abstract: The application provides a rodent or possum trap (101) comprising: a tunnel (102) for receiving a rodent or possum, a mechanical kill mechanism (103), the kill mechanism comprising, a spring-loaded strike edge (105) and optionally additionally comprises a mechanical trigger, and at least one trap door (104) having a closed position and an open position; wherein when the kill mechanism (103) is arranged so that when it is activated by a rodent in the tunnel (102) it kills the rodent and opens the trap door (104) to release the deceased rodent from the rodent trap.
    Type: Grant
    Filed: August 25, 2023
    Date of Patent: December 17, 2024
    Inventors: Arthur Randell Bradwell, Robert Andrew Smith, Dan Simmons
  • Purification of hydrogen fluoride
    Publication number: 20010022957
    Abstract: A process for purifying anhydrous HF by contacting anhydrous HF containing phosphate impurities with an effective amount of activated carbon so that the phosphate impurities are adsorbed on the activated carbon, and anhydrous hydrogen fluoride having a reduced phosphate impurity content is obtained.
    Type: Application
    Filed: December 19, 2000
    Publication date: September 20, 2001
    Inventors: Somanahalli Naranappa Subbanna, Charles Lewis Redmon, Robert Andrew Smith, Paul Frederick Kunkel