Apparatus and method for producing purified calcium carbonate
Номер патента: EP4330191A2
Опубликовано: 06-03-2024
Автор(ы): Andrew Laurence STACEY, Carole Celia PASHLEY, David Belton, Graham James HICKMAN, Michael Douglas KEAST
Принадлежит: Avgo Biotech Ltd
Опубликовано: 06-03-2024
Автор(ы): Andrew Laurence STACEY, Carole Celia PASHLEY, David Belton, Graham James HICKMAN, Michael Douglas KEAST
Принадлежит: Avgo Biotech Ltd
Реферат: A method for separating membrane from an avian eggshell comprising the steps of providing pieces of egg shell having attached membrane, contacting the pieces of egg shell having attached membrane with a carbonic anhydrase enzyme or an acidic aqueous medium, applying physical force to the pieces of egg shell having attached membrane, and separating the pieces of egg shell from the detached membrane. A method of producing purified calcium carbonate comprising the steps of; providing impure calcium carbonate material, contacting the impure calcium carbonate material with an aqueous acid to produce carbon dioxide and an aqueous product mixture comprising a calcium salt, adding an aqueous base to the aqueous product mixture, adding a carbonate source to the aqueous product mixture to produce calcium carbonate and a salt by-product, and precipitating purified calcium carbonate.
Method for manufacturing implant using composite powder containing calcium carbonate with micro-structured particles
Номер патента: RU2753283C2. Автор: Франк РАЙНАУЭР,Зигмунд ЛУГЕР,Мариян ФУКАК. Владелец: Карл Лайбингер Медицинтехник Гмбх Унд Ко. Кг. Дата публикации: 2021-08-12.