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:
Jun. 06, 2000
Filed:
Nov. 24, 1998
Applicant:
Inventors:
Roy Alan Kirk, Manchester, GB;
Jonathon Gawtrey, Lyons, FR;
Michael Heneghan, Manchester, GB;
John Whitworth, Manchester, GB;
Ian Antony Dearden, Manchester, GB;
James Philip Taylor, Macclesfield, GB;
John Barry Henshall, Manchester, GB;
Assignee:
Ciba Specialty Chemicals Corporation, Tarrytown, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ; B41M / ;
U.S. Cl.
CPC ...
503221 ; 549225 ; 549224 ;
Abstract
Disclosed are a novel crystal form of the fluoran compound represented by formula (I) as characterised by specific X-ray powder diffraction pattern and melting range; process for the preparation of said novel crystal form and recording materials comprising the said crystal form.