Patents chemical structures

SCHEME 3.57 Chemical structures of DSA series patented by Idemitsu Kosan Co. Ltd. 

In realizing the poor film-forming property of 9,10-(diphenyl)anthracene, the Kodak group improved this property by designing a series of blue emitters based on further substituted anthracene derivatives. The chemical structures of these materials were patented in a U.S. Patent in 1999 [239], In their patent, Kodak also reported the EL data using one of these compounds as a host material and using TBP as a blue dopant (Scheme 3.62). The device structures is ITO/CuPc/NPD/anthracene compounds.5%TBP/Alq3/Mg Ag. The EL of the device showed blue emission with CIE color coordinates of (0.144, 0.196). Without the... 

SCHEME 3.71 Chemical structures of blue Alq3 derivatives patented by Kodak. 

U-50488 has not only been a useful biological lead - its chemical structure, which is apparently unrelated to any of the classical morphine derivatives, has been used as the starting point for several drug discovery programmes. This has led to several publications and patents, particularly during the period 1989-1990, and these are discussed in this section. 

Most of the top 25 companies are involved in discovery research targeted at the synthesis of new chemicals with new chemical structures, new modes of action and low rates of application that can be protected by international patents and that will give the inventing company an advantage over its competitors. Other generic manufacturers also invest in research but this is more applied in terms of manufacturing opportunities and formulation advances. 

CLAIMS BIBLIO includes an abstract and claim in addition to basic bibliographic information for chemical and chemically related U.S. patents from 1950 and for all patents from 1963. All claims are searchable and printable from 1971 claims for many patents are not available from 1971 to 1974. From 1972, many tides have been enhanced with additional keywords to describe the invention more clearly and to indicate the presence of a drawing chemical structures have been converted so that they display in linear format. Many company names have been standardized, and USPTO classification is updated annually to reflect reclassification projects. 

SciFinder Scholar lets students and faculty search the CAPlus and Registry databases by authors names, concepts, chemical names, molecular formulas, CAS Registry Numbers, chemical structures, and specific references such as a patent number. SciFinder allows these options, plus other ones for handling the queries and hits. The latest version of SciFinder also can search Medline. 

Gillet, V.J., Downs, G.M., Holliday, J.D., Lynch, M.F., Dethlefsen, W. Computer storage and retrieval of generic chemical structures in patents. 13. Reduced graph generation. Journal of Chemical Information and Computer Science 1991, 31, 260-270. 

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