Derwent World Patents Index

Introduction

Introduction to the Derwent World Patents Index on STNext

DWPI Coverage Information

• DWPI Patent Authority Coverage
• DWPI Kind Code Summary
• DWPI Updates and Corrections

Derwent Patents Citation Index in DWPI

• Derwent Patents Citation Reference Manual
• Getting Started with Citation Searching in Derwent World Patents Index

Derwent Classification, Manual Codes, and Patent Assignee Codes

• Using the Derwent Manual Codes on STNext
• DWPI Classification System
• DWPI Classification Guide
• DWPI Manual Codes
  • User Guide - CPI Manual Codes
  • User Guide – GMPI/EPI Manual Codes
  • DWPI Manual Code Lookup Tool
• DWPI Patent Assignee Codes (PACO)
• DWPI Patent Assignee Code Lookup

Derwent Fragmentation Codes

• Generating Frag Code Queries with CAS STNext
• CPI Chemical Indexing User Guide
• CPI Fragmentation Codes Chart
• Section P Fragmentation Codes Chart 2015
• Section R Fragmentation Codes

Derwent Polymer Indexing

• DWPI Enhanced Polymer Indexing Workshop
• DWPI Polymer Indexing
  • DWPI Polymer Indexing Hierarchy
  • DWPI Polymer Indexing Dictionary
  • DWPI Polymer Indexing Reference Manual
  • DWPI Polymer Indexing Thesaurus
  • DWPI Polymer Indexing System Description

Attachments

• 1_Introduction to DWPI on STNext 202501.pdf2 MB
• 2_Summary Table DWPI -2022.xlsx30 KB
• 4_Getting started with citation searching in DWPI 202501.pdf2 MB
• 5_Derwent Manual Codes 202501.pdf2 MB
• 6_Derwent Fragmentation Code Generator 202501.pdf1000 KB
• 8_Searching the Derwent enhanced polymer indexing system on CAS STNext®202501.pdf2 MB