Uniterm indexing

CLAIMS COMPREHENSIUE (subscriber access only) further enhances the UNITERM indexing from 1964 with roles for aH iadexed compounds and polymer class terms and with links and negation codes for the fragment terms describiag chemical compounds (94). 

Other organi2ations have assumed important positions in the field of patent documentation. IFl/Plenum Data Corp. (formerly Information for Industry) began in 1955 to index U.S. chemical patents by the Uniterm Index system. Uniterm indexing was eventually extended back to 1950. The acquisition in 1971 of Du Font s in-house indexing system and staff resulted in a more powerful system, the Comprehensive Data Base (CDB), which now covers U.S. chemical patents frommid-1964 to date. 

Searching patents is an art in itself and cannot be discussed in detail here. Appropriate patent classes are usually searched at the Patent Office in Washington. Chemical Abstracts covers some patents. Searchers may consult the Uniterm Index of Chemical Patents and other aids. They will have difficulty with the Annual Patent Index of the Official Gazette of the 17. S. Patent Office, because the entries are listed by title and inventors. As titles do not correspond to subjects, this index is not very useful. 

The final step in multiple-base classifications is coordinate indexing, which amounts to making each indexing t6rm a base of its own. The idea is old one of its modem forms is Uniterm indexing (13). 

There are other ways of obtaining United States patent information, such as the Uniterm Index to United States Chemical Patents, and the various other private agencies which supply copies of the patents, or of the most important claim on some sort of pimched card. 

Although we actually have only the Official Gazette of the U. S. Patent Officey we are still able to help many readers seeking patent information because we are subscribers to the Uniterm Index to Chemical Patents. 

CLAIMS UNITERM adds enhanced indexing to the chemical and chemically related patent records general terms to describe processes, properties, end products, etc specific compound terms (over 15,000) and chemical fragment terms to describe generic compounds. 

Mines, Patricia, Uniterm System of Coordinate Indexing, in Advances in Docu-... 

Although they are only indirectly concerned with information retrieval from the literature, it is worth noting that the computer has also made significant contributions to the production of printed indexes. Much of the work has involved the production of traditional indexes by computer methods, ranging from simple Uniterm and keyword indexes to fully articulated subject indexes and dual dictionaries. Products more particularly of the computer age are permuted indexes such as the Permuterm Index of the Institute for Scientific Information and the KWIC, KWAC, KWOC family. 

Provides access to chemical and chemically related patents. Subject indexing for each chemical patent from a controlled vocabulary designed to facilitate retrieval of chemical structures and polymers. Indexing is prepared from a review of the full text of patent documents 20 or more Uniterm codes are then added to each record. CLAIMS/UNITERM 1950-1970, File 223, parallels coverage of File 23, CLAIMS/CHEM 1950-1970 CLAIMS/UNITERM 1971-1977, File 224, parallels File 24, CLAIMS/U.S. PATENTS 1971-1977 and CLAIMS/ UNITERM 1978 to present. File 225, parallels File 25, CLAIMS/U.S. PATENT ABSTRACTS. 

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