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:
Dec. 31, 1996
Filed:
Jul. 21, 1994
Fujitsu Limited, , JP;
Abstract
A method of determining a space group corresponding to a crystal structure includes a first step of reading a data structure of a target crystal. The data corresponding to the target crystal structure is then compared with data of crystal structures stored in memory. The stored crystal structures are classified according to lattice constants and other conditions. A plurality of space groups included in the crystal system are obtained by extraction from the memory region. An arithmetic operation is performed on the lattice coordinates of each atom constituting the structure (unit cell) of the target crystal by way of matrices corresponding to the space groups to determine equivalent positions of each atom. Each of the obtained crystal structures is then compared with the target crystal. Upon completion of a successful comparison, a description of a target crystal is obtained.