Close this Window
Description | File Data | Subject Coverage | Sources | Database Producer | Usage Terms

Database: IFIREF

The IFIREF File (IFI Uniterm and US Class Reference File) is a speical reference database for the other database files. IFIREF contains US Patent and Trademark Office (USPTO) classification codes and titles plus authority data for general, fragment, and compound uniterms.

Classification records contain US Classifications with their titles, controlled terms, the level number of classifications within their hierarchies, and the complete hierarchy.

General uniterm records contain Uniterm codes, the associated controlled term text, used for terms, broader terms, narrower terms, and related terms.

Compound uniterm records contain uniterm codes, molecular formulas, controlled terms, chemical names, and fragment codes with associated text.

Three thesauri are available: Controlled Terms (/CT), Fragment Code (/FG), and Uniterm (/UN).

File Data

• More than 441,000 records (11/11)
• Classes and index records are reloaded as needed
• Uniterms are reloaded as needed

Subject Coverage

The IFIREF file contains indexing UNITERMS and USPTO Classifications for US patents in the following subject areas:

• Aerospace and Aeronautical Engineering
• Agricultural Engineering
• Biomedical Technology
• Chemical Engineering
• Chemistry
• Civil Engineering
• Electrical and Electronics Engineering
• Electromagnetic Technology
• Mechanical Engineering
• Medicine
• Nuclear Science
• Telecommunications

Sources

• USPTO Manual of Classification
• Uniterm Authority Lists
• IFI Compound Term Vocabulary

Database Producer

IFI Claims Patent Service
(A division of Fairview Research LLC)
P.O. Box 1148, Madison, CT 06443
Phone: (203) 779-5301
Fax:     (203) 583-4521
E-mail: info@ificlaims.com

Usage Terms

Usage terms for IFIREF are detailed in the CAS Information Use Policies.

For more detailed information, view the STN Database Summary Sheet.