The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 24, 2005
Filed:
Jul. 26, 2001
Applicants:
Kiyoshi Fuda, Akita, JP;
Toshiaki Matsunaga, Akita, JP;
Takeshi Kamiya, Akita, JP;
Kota Omori, Akita, JP;
Inventors:
Kiyoshi Fuda, Akita, JP;
Toshiaki Matsunaga, Akita, JP;
Takeshi Kamiya, Akita, JP;
Kota Omori, Akita, JP;
Assignee:
Jemco Inc., Akita, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07C017/38 ; C07C017/389 ; C07C017/392 ; C07C017/395 ; C07C017/42 ;
U.S. Cl.
CPC ...
Abstract
Divalent and trivalent metal salts are added to the solution containing the fluorine compound to precipitate the layered double hydroxide containing the fluorine compound between layers. By these processes, the fluorine compound can be fixed with high rate. Moreover, if necessary, the precipitated layered double hydroxide can be recovered to separate the fluorine compound or its salt between layers. Therefore, the burden to environment or the ecosystem by the fluorine compound can be reduced.