Markush structure searching over the years

Edlyn S. Simmons

World Patent Information, 2003, vol. 25, issue 3, 195-202

Abstract: The indexing and retrieval of Markush structures has always been among the most problematic aspects of patent information and the most expensive. Indexing advanced from the simple classification systems of the 1950s to proprietary fragmentation systems, which were followed in the 1980s by topological systems. The cost of access to the latest indexing systems has varied widely over the years. In spite of improvements in indexing and less restrictive access conditions, comprehensive Markush structure searches remain the sole province of well financed organizations.

Date: 2003
References: Add references at CitEc
Citations: View citations in EconPapers (3)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0172-2190(03)00073-5
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:worpat:v:25:y:2003:i:3:p:195-202

Ordering information: This journal article can be ordered from
http://www.elsevier.com/wps/find/supportfaq.cws_home/regional
http://www.elsevier. ... _01_ooc_1&version=01

Access Statistics for this article

World Patent Information is currently edited by Michael Blackman

More articles in World Patent Information from Elsevier
Bibliographic data for series maintained by Catherine Liu ().