STNews - September/October 2010


CA/CAplus kind code changes for Chinese patents increase consistency, save time

Chinese utility models with a publication date of October 6, 2010 or later will now use kind code U in the CA/CAplus family of databases.  The kind codes for Chinese utility patents with publication dates of April 7, 2010 through October 5, 2010 will be  updated from Y to U.  These changes impact both basic patents and equivalents, will make crossover searching easier, and will save you time by ensuring kind-code consistency among CA/CAplus and other STN databases.

New format for Korean patent application numbers in CA/CAplus increases consistency, saves time 

Numerous Korean patent application numbers (/AP) and priority application numbers (/PRN) in the CA/CAplus family of databases formerly consisted of six digits. A new seven-digit format has been adopted to ensure conformity among the CA/CAplus family and other important STN databases.

The new format contains a zero (0) inserted immediately following the 7, which is always the first of the seven characters in the serial number (see example below). This change applies to 90,000 Korean application numbers and to approximately 3,000 priority application numbers in patents from 1999 to the present.

The new format will make crossover searching easier and will save you time by ensuring that patent number crossovers among STN patent databases are comprehensive.


Format for Korean Patent Application Number and Priority Application Number



Previous format

KR YYYY-7nnnnn

(e.g., KR 2000-710051)

New format

KR YYYY-70nnnnn(e.g., KR 2000-7010051)


Increase your retrieval consistency with new formats for Taiwanese application numbers in CA/CAplus

The formats of Taiwanese patent application numbers (/AP) and priority application numbers (/PRN) have changed in the CA/CAplus databases to be consistent with other STN databases. These changes ensure that you will receive a complete set of records when you crossover patent application numbers among several STN databases. 

The new formats will be applied to new Taiwanese applications and CA/CAplus backfile records, and differ from previous formats by the deletion of the first two characters (that corresponded to the Taiwanese year) immediately following the dash:


Taiwanese Patent Application Number Format



Previous format

TW 2005-94114837

New format

TW 2005-114837


Precision of EMBASE searching enhanced with new chemical name field

A new Chemical Name Search field (/CNS) in EMBASE has been introduced to increase retrieval precision for chemical names. This new /CNS field operates across the entire EMBASE database to retrieve names indexed in the Chemical Name (/CN) and the CAS Registry Number (/RN) fields.

The /CNS field has SLART and proximity capabilities, and its chemical names are parsed on spaces and on non-alphabetic characters. For example, the chemical name 9-(3-Deoxy--D-ribofuranosyl)adenine is parsed as

  • 9
  • 3
  • Deoxy
  • D
  • ribofuranosyl
  • adenine

Dimethyl sulfone appears in the /RN field as dimethyl sulfone and can be retrieved in the /CNS field by searching the parsed entities

  • dimethyl
  • sulfone

Glyco flex iii appears in the /CN field and can be retrieved in the /CNS field by searching

  • glyco
  • flex
  • iii  

MEDLINE Cited References provide additional relevant records with no additional searching

Now there is an easy way to retrieve additional information for a record of interest in the MEDLINE database on STN. Cited References are now available in MEDLINE, and you can use them to access MEDLINE records related to a record of interest. To date, more than one million MEDLINE records have been enhanced with Cited References information. 

A number of new search fields have been introduced to quickly connect you to the Cited References information. New custom display options are also available for Cited References information, such as the RE field, which displays an assortment of useful data elements (see below), and RAN.MEDLINE, which enables you to display the MEDLINE record for cited references of interest.

New Search Fields for Cited References Data

RAU Reference First AUthor Name (examples: Thao, M L; Magallon, S; Moran, Nancy A, Anonymous)
RWK Reference WorK (source publication, such as Science; Mol Biol Evol; Conf Proc IEEE Eng Med Biol Soc. 2007). Search as bound phrases (example: S Mol(S)Biol(S)Evol/rwk)

Reference SOurce terms (such as publication title, volume, and first page number)

RPY Reference Publication Year (example: 2008; this field is numerically searchable)
RVL Reference Publication VoLume Number  
RIS Reference ISsue Number
RPG Reference First PaGe Number
RAN.MED Reference Accession Number in MEDLINE


REference CouNT--the total number of cited references available for a source document.  If provided, based on data provided by the NLM.  Numerically searchable.
REM.CNT REference PubMed CouNT--the total number of cited references available for a source document in the PubMed database.  (A small number of referenced documents loaded on PubMed are not made available in MEDLINE.)  The REM.CNT field is numerically searchable.
RE/FA A new value added to the Field Availability (FA) field.  You can include RE/FA in your search strategy to limit your retrieval to MEDLINE records with Cited REferences information.


New Custom Display Fields


Each entry in the RE field consists of the following elements (subject to availability):

  • first author name (RAU
  • work information (RWK)
  • publication year (RPY)
  • volume (RVL)  
  • issue (RIS)
  • inclusive pagination (including RPG)
  • the database where the cited references was found (always MEDLINE, in this case)

When available, RE data is displayed as part of the ALL/ DALL display formats.


REference information displayed in a TABular format. Because of space limitations, RETAB does not include the RIS data.


Sample record (new data highlighted in yellow)



Removal of Pre-IPC 8 data fields streamlines displays in USPATFULL, USPAT2, and USPATOLD

USPATFULL, USPAT2, and USPATOLD displays have been streamlined through the removal of Pre-IPC 8 fields (ICM, ICS, ICA, and ICI) from the following pre-defined display formats:

  • IND
  • SCAN

Note: You can still use these Pre-IPC 8 fields when searching and/or custom-displaying information from Pre-IPC 8 patents (those published in 2005 and earlier).

The CAS REGISTRY sample search option is enhanced  

The CAS REGISTRY has witnessed extraordinary growth over the past few years with approximately 12,000 new substances now added daily. The REGISTRY database currently contains more than 54.9 million organic and inorganic substances--all potential candidates for matching your structure query.  

To keep pace with this ever expanding database content, the iteration limits for sample searches have been increased from 2,000 to 1 million records.  This will ensure that sample searches continue to be accurate representations of full database search results.

The increase in iteration limits will enable the majority of your sample searches to run to completion; however, you will continue to receive no more than 50 randomly chosen records for each sample-search answer set.

New version of STN Viewer preserves custom highlighting of terms when patent documents are saved in .rtf format

A new release of STN Viewer allows you to preserve customized-highlighting of terms of interest when saving original STN Viewer patent documents to .rtf format. Now your colleagues and managers can quickly review patent documents in .rtf format, either print or electronically, by relying on the navigation points provided by your highlighting.

Below is an example of an STN Viewer record with customized term highlighting:   


The following example shows the customized term highlighting preserved in .rtf format from the original STN Viewer record above:


STN News - What's New on STN

    March/April 2017 | Latest Release of New STN
    Enhances Search History and Expands Database

    January/February 2017 | 2017 Version of MEDLINE
    is Now Available    
    November/December 2016 | PatentPak Content is 
    Rapidly Expanding!

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