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:
Apr. 10, 2012
Filed:
Jun. 01, 2005
Tetsuo Kawano, Kanagawa, JP;
Tetsuo Kawano, Kanagawa, JP;
FUJIFILM Corporation, Minato-Ku, Tokyo, JP;
Abstract
To provide a process for producing carbonate particles, capable of efficient, easy formation of carbonate particles which have high crystallinity, less prone to agglomeration and offer orientation birefringence, particularly carbonate particles that are needle- or rod-shaped, and of controlling the particle size. In the process a metal ion source and a carbonate ion source are heated together in a liquid of 55° C. or higher for reaction to produce carbonate particles with an aspect ratio of greater than 1, wherein the metal ion source contains at least one metal ion selected from the group consisting of Sr, Ca, Ba, Znand Pb. The carbonate particles are preferably needle- or rod-shaped, pH of the liquid after heating reaction is preferably 8.20 or more, and in its X-ray diffraction spectrum the full-width at half maximum of the diffraction peak corresponding to (111) plane is preferably less than 0.8°.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile