Classic US Patent Database with Legal StatusThe most extensive online, text-searchable collection of U.S. patents.
The CLAIMS U.S. Patents Database contains references to more than 3 million patents granted in the United States since 1950. Known for our broad coverage, in-depth indexing of chemical patents and extensive standardization of company names, the database represents the largest collection of clean and reliable, text-searchable U.S. patent references available in an online database.
The CLAIMS U.S. Patents Database includes:
- All chemical patents since 1950
- All utility patents since 1963
- Complete collection from 1971-74, including 96,000 patents not found in USPTO online records or other files for that time period
- All design patents since December 1976
- All plant patents since December 1976
- Patent title, patent number, issue date
- Assignee names(s)
- Inventor name(s)
- Bibliographic data including the U.S. Patent Office Classifications and International Patent Classifications
- Main claim from the USPTO Official Gazette (O.G.)
The CLAIMS US Patents Database is available from the following online vendors using these file names:
- Dialog — 340
- STN — IFIPAT
- Questel — IFIPAT
Classic Comprehensive US Patent Database with Chemical IndexingThe premier source for U.S. chemical patent information. CLAIMS Chemical Indexing Databases (Uniterm Database and Comprehensive Database) include all of the information contained in the CLAIMS U.S. Patents Database as well as in-depth subject indexing for chemical and biological patents.
This indexing, which uses standardized terminology to describe chemical concepts, novelty, and utility of the invention, provides for more comprehensive retrieval of chemical and biological patents. Some key features of the CLAIMS Chemical Indexing Databases include:
- Effective and versatile polymer search system
- Coverage of all chemical and biological technologies back to 1950
- Indexing based on the complete patent document, emphasizing what is novel and useful about the invention
- In-depth fragmentation system used to describe Markush structures, generic chemical structures and specific structures not found inIFI's compound registry
- Standardized linear notations for chemical structures which can be searched and displayed online
- Indexing performed by experienced IFI chemists
- Well-defined indexing guidelines and a comprehensive proprietary thesaurus which ensure consistency
- Monthly updates.
Some of the important features of the CLAIMS Comprehensive Database include:
- Enhanced polymer retrieval system
- Comprehensive substructure fragmentation system
- Ability to search roles to define chemical functions
- Usage time not restricted
Chemical Structure ImagesChemicals in patents are often described as images, which cannot be retrieved in a text search. IFI indexers interpret and annotate patents with standard chemical terminology that can be easily searched by a chemist.
In this example, an IFI chemical indexer recognized and indexed the drug tadalafil from the following Markush structure claimed in a patent, even though that drug’s common name does not appear in the patent (US7550479):
Searching Polymer ChemistryThe IFI Polymer system breaks complex polymer structures into easily searched prescribed monomers, and special 2 digit role indicators further identify polymer class, and whether the monomer is part of a homo- or copolymer.
For example, when a patent describes a polysiloxane polymer using a representation like the one here, IFI identifies the component monomeric units, and indexes a standard silanediol compound for each type of repeating unit. The repeating units are tagged with appropriate role indicators, and IFI standard terms are indexed for Polysiloxanes and Copolymers.
With this information, a searcher can find this patent when searching for the exact copolymer described here, or whenever the search requires any one or more components included in this polymer, e.g., any polysiloxane copolymer containing diphenylsiloxane units.
IFI indexed each unit in copolymer roles:
- Diphenylsilanediol 77 (2 digit copolysiloxane role indicator)
- Silanediol, methyl/3,3,3-trifluoropropyl/- 77
- Dimethylsilanediol 77
The CLAIMS Comprehensive Database is available from the following online vendors using these file names:
- Dialog — 942
- STN — IFICDB
- Questel — IFICDB