|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||62/501 ; 53/127 ; 53/432 ; 53/440|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 4 인용 특허 : 10|
Liquid cryogen is added to a container of particulate material (e.g. powder, flakes or granules) immediately before the container is capped as part of a process for pressurizing the container. A liquid cryogen retainer is positioned within the unsealed container above the particulate material, and the flow of liquid cryogen is directed to the retainer to substantially prevent eruption from the container of the particulate material, which may otherwise result when the liquid nitrogen penetrates the particulate material and causes the particulate material ...
In a method of producing a pressurized sealed container of particulate material in which a metered flow of a desired amount of liquid cryogen is directed into an unsealed container of said particulate material immediately before the container is sealed, the improvement comprising providing a liquid cryogen retainer, positioned within said unsealed container above said particuate material, to receive said metered flow of cryogen, and directing said flow of liquid cryogen to said retainer, and capping said container, whereby eruption from said container of...