Imaging Technology Patent Information System

A useful classification of sensitizing dyes is the one adopted to describe patents in image technology. In Table 1, the Image Technology Patent Information System (ITPAIS), dye classes and representative patent citations from the ITPAIS file are Hsted as a function of significant dye class. From these citations it is clear that preferred sensitizers for silver haUdes are polymethine dyes (cyanine, merocyanine, etc), whereas other semiconductors have more evenly distributed citations. Zinc oxide, for example, is frequendy sensitized by xanthene dyes (qv) or triarylmethane dyes (see Triphenylmethane and related dyes) as well as cyanines and merocyanines (see Cyanine dyes). 

ITPAIS, the Image Technology Patent Information System was developed between 1975—1985 by Eastman Kodak Co., Agfa-Gevaert (Antwerp/Leverkusen), and Fuji Photo Film Co., Ltd., and encompasses selected patents and Hterature references related principally to the chemical aspects of image technology. Search terms used for this table were the same as in the previous edition, and the Derwent patent database was used for the search data presented here. 

A useful classification of sensitizing dyes is the one adopted to describe patents in image technology. In Table 1. the Image Technology Patent information System (ITPAIS). dye classes and representative patent citations from the ITPAIS file are listed as a function of significant dye class. 

The first attempt to integrate the chemical system with the external literature took the form of an Information Imaging Technology Patent Information System, ITPAIS. This is a collaborative venture of Kodak with Agfa, Fuji and the Rochester Institute of Technology. ITPAIS uses a photoscience thesaurus and contains 95,000 chemical accession numbers. Microfilm indexes to text and chemical structures are disseminated to the collaborating companies and DIALOG provides text access to the participants. 

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