Patents by Inventor Anders KIHL

Anders KIHL 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).

  • Two stages extraction method for synthesizing precipitated calcium carbonate
    Patent number: 12630439
    Abstract: Present invention relates to a multi-stage method for preparing high purity calcium carbonate precipitate from wastes and by-products containing high concentrations of calcium and silica. The calcium and silica rich material is introduced into a stirred reactor containing the extraction solution. The calcium rich solution, produced in the reactor, is separated from residual material and a gas containing carbon dioxide is passed into the said solution to precipitate calcium carbonate. The calcium carbonate precipitate is then separated from solution. The recovered solution and residual material, from previous extraction stage; is stirred in a reactor to further extract calcium from the residual material. After separating the solids from solution, carbon dioxide containing gas is introduced into solution to again precipitate calcium carbonate. Calcium carbonate precipitate is then separated from solution. The residual material produced from the process is characterized by high silica content.
    Type: Grant
    Filed: June 1, 2020
    Date of Patent: May 19, 2026
    Assignee: R-S OSA SERVICE OÜ
    Inventors: Hussain Azeez Mohamed, Anders Kihl, Alar Saluste, Mai Uibu, Andres Trikkel, Rein Kuusik, Kadriann Tamm, Ae Leier, Riho Mõtlep, Kalle Kirsimäe
  • METHOD OF PREPARING A SLUDGE, SLUDGE RESULTING FROM SAID METHOD AND USE OF SAID SLUDGE
    Publication number: 20240164408
    Abstract: Biosludge comprising high amounts of lignocellulose can be made suitable as feed for larvae such as black soldier fly larvae by hygienization or sterilization at temperatures up to 200 degrees. The heating process may be combined with hydrolysis.
    Type: Application
    Filed: March 21, 2022
    Publication date: May 23, 2024
    Applicant: RAGN-SELLS TREATMENT AND DETOX AB
    Inventors: Robert NORGREN, Olof BJÖRKQVIST, Anders JONSSON, Anders KIHL
  • A TWO STAGES EXTRACTION METHOD FOR SYNTHESIZING PRECIPITATED CALCIUM CARBONATE
    Publication number: 20230212020
    Abstract: Present invention relates to a multi-stage method for preparing high purity calcium carbonate precipitate from wastes and by-products containing high concentrations of calcium and silica. The calcium and silica rich material is introduced into a stirred reactor containing the extraction solution. The calcium rich solution, produced in the reactor, is separated from residual material and a gas containing carbon dioxide is passed into the said solution to precipitate calcium carbonate. The calcium carbonate precipitate is then separated from solution. The recovered solution and residual material, from previous extraction stage; is stirred in a reactor to further extract calcium from the residual material. After separating the solids from solution, carbon dioxide containing gas is introduced into solution to again precipitate calcium carbonate. Calcium carbonate precipitate is then separated from solution. The residual material produced from the process is characterized by high silica content.
    Type: Application
    Filed: June 1, 2020
    Publication date: July 6, 2023
    Applicant: R-S OSA SERVICE OÜ
    Inventors: Hussain Azeez MOHAMED, Anders KIHL, Alar SALUSTE, Mai UIBU, Andres TRIKKEL, Rein KUUSIK, Kadriann TAMM, Ae LEIER, Riho MÕTLEP, Kalle KIRSIMÄE