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:
Sep. 30, 1986
Filed:
Aug. 08, 1984
Tadao Sugimoto, Kanagawa, JP;
Toshiaki Hayakawa, Kanagawa, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
A silver halide emulsion containing negative working silver halide grains each comprising a core of silver bromide or silver bromoiodide, a first coating layer exterior the core of silver iodide or silver bromoiodide, and a second coating layer exterior the first coating layer composed of silver bromide or silver bromoiodide different from that of the first coating layer in halide composition, and having a projected area diameter-to-thickness ratio of less than 5, in which: (1) the first coating layer contains more iodide than the core by 10 mol % or more; and (2) silver in the first coating layer accounts for 0.01 to 30 mol % of the total silver in the grain.