PlainPatent

CPC technology class · G09

G09D - Railway OR LIKE TIME OR FARE Tables

Railway or like time or fare tables; perpetual calendars. 9 US utility patents granted 2015–2025, with the leading assignees and year-by-year filing trajectory.

9
US patents granted
G09
Parent CPC class
2
Active assignees
-87%
5-yr velocity

The verdict

Railway OR LIKE TIME OR FARE Tables ranks #662 of 670 CPC technology areas - 9 US patents granted since 2015, with filing down 87% over five years.

#662
of 670 CPC technology areas
9
US patents granted, 2015–2025
International Busines…
leading assignee (2)
-87%
filing velocity, last 5 yrs
Top assignee: International Business Machines Corporation (2 patents)

CPC subclass G09D - RAILWAY OR LIKE TIME OR FARE TABLES; PERPETUAL CALENDARS - covers 9 US utility patents granted between 2015 and 2025 according to USPTO PatentsView records, within the broader CPC class G09 (EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS). See our CPC classification guide for how the system works.

The competitive landscape in G09D is shaped by 2 distinct companies actively filing in this space. International Business Machines Corporation leads with 2 patents, followed by Unibind Limited at 1 grants.

Filing activity in G09D is down 87% over the past five years versus 2015-2019, a notable slowdown that may signal a maturing field. All counts come directly from USPTO PatentsView and reflect US granted utility patents only.

Is G09D innovation accelerating?

US utility-patent grants per year in G09D, 2015–2025 - recent five years are down 87% versus 2015–2019.

012345 20152016201720182023 1

Who leads G09D?

The 12 most active assignees in RAILWAY OR LIKE TIME OR FARE TABLES; PERPETUAL CALENDARS - wider bars mean more grants

patents

What this shows International Busines… is the most active filer in G09D, holding 2 of the 9 patents in this class. Concentration at the top signals how contestable this technology area is for new entrants.

Source USPTO PatentsView, granted utility patents As of 2015–2025 grant years
View data table
Top patent holders in CPC subclass G09D
Rank Company Patents in G09D
#1 Progressive International Corp. 1
#2 Unibind Limited 1

About This Class

CPC subclass G09D belongs to class G09.

9 patents were granted in this class between 2015 and 2025.

2 companies actively patent in this space.

Classification System

Cooperative Patent Classification (CPC) is a hierarchical patent classification system used by the USPTO and EPO.

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Frequently Asked Questions

What is CPC class G09D?
CPC subclass G09D covers RAILWAY OR LIKE TIME OR FARE TABLES; PERPETUAL CALENDARS. It belongs to CPC class G09 (EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS), with 9 US utility patents granted since 2015.
How many patents have been filed in G09D?
9 US utility patents were granted in CPC subclass G09D between 2015 and 2025, based on USPTO PatentsView data.
Which company holds the most patents in G09D?
International Business Machines Corporation leads G09D with 2 patents, making it the most active assignee in this technology area.
How is patent data for G09D collected?
Patent data comes from USPTO PatentsView, a public research dataset maintained by the United States Patent and Trademark Office. It covers all US granted utility patents and assigns CPC codes based on the technology described in each patent.
What is the difference between CPC class and subclass?
A CPC class (e.g., G09) is a broad technology category. Subclasses like G09D provide finer granularity within that category. PlainPatent organizes data at the subclass level (4-character codes) for the most useful view of technology domains.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from USPTO PatentsView - official U.S. government patent data. See our methodology for computation details. Retrieved and formatted by PlainPatent Editorial

Every figure on PlainPatent is rendered directly from USPTO source data, no number is typed in by an editor. This page draws directly on USPTO source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.