Keisei Electric Railway Patents – Key Insights and Stats

Keisei Electric Railway has a total of 43 patents globally, out of which 41 have been granted. Of these 43 patents, more than 83% patents are active. The United States of America is where Keisei Electric Railway has filed the maximum number of patents, followed by Japan. Parallelly, the United States of America seems to be the main focused R&D centre and also Japan is the origin country of Keisei Electric Railway.

Keisei Electric Railway was founded in 1909. Keisei Electric Railway provides passenger rail and bus transportation services in the Metropolitan Tokyo and Chiba prefecture areas. The business also manages real estate, sells, leases, and maintains it. It runs department and grocery shops, hotels, travel agencies, movie theatres, and restaurants. As of March 2023, the market cap of Keisei Electric Railway is $5.9 Billion.

Do read about some of the most popular patents of Keisei Electric Railway which have been covered by us in this article and also you can find Keisei Electric Railway patents information, the worldwide patent filing activity and its patent filing trend over the years, and many other stats over Keisei Electric Railway patent portfolio.

How many patents does Keisei Electric Railway have?

Keisei Electric Railway has a total of 43 patents globally. These patents belong to 43 unique patent families. Out of 43 patents, 36 patents are active.

How Many Patents did Keisei Electric Railway File Every Year?

Keisei Electric Railway Patent Filling Trend

Are you wondering why there is a drop in patent filing for the last two years? It is because a patent application can take up to 18 months to get published. Certainly, it doesn’t suggest a decrease in the patent filing.

Year of Patents Filing or GrantKeisei Electric Railway Applications FiledKeisei Electric Railway Patents Granted

How many Keisei Electric Railway patents are Alive/Dead?

Worldwide Patents

Keisei Electric Railway Patent Portfolio

How Many Patents did Keisei Electric Railway File in Different Countries?

Keisei Electric Railway Worldwide Patent Filling

Countries in which Keisei Electric Railway Filed Patents

United States of America38

Where are Research Centers of Keisei Electric Railway Patents Located?

R&D Center of Keisei Electric Railway

10 Best Keisei Electric Railway Patents

US20060121477A1 is the most popular patent in the Keisei Electric Railway portfolio. It has received 10 citations so far from company like Sysmex.

Below is the list of 10 most cited patents of Keisei Electric Railway:

Publication NumberCitation Count

List of Keisei Electric Railway patents

Keisei Electric Railway PatentsTitle
USPP25324P2Antirrhinum Plant Named ‘Keianpinetum’
USPP25240P2Petunia Plant Named ‘Keisurflipinas’
USPP25147P2Petunia Plant Named ‘Keisurfputem’
USPP25122P2Petunia Plant Named `Keisurfbripitos`
USPP24453P2Petunia Plant Named Sunsurfsirou
USPP22839P2Petunia Plant Named `Keisurfhopises`
USPP22838P2Petunia Plant Named `Keisurfpusos`
USPP21199P3Rose Plant Named `Keishisutoki`
USPP19509P3Hybrid Tea Rose Plant Named ‘Keihaburu’
USPP19088P2Antirrhinum Plant Named `Keianichigorum`
USPP19091P2Antirrhinum Plant Named `Keianmomorom`
USPP19084P2Antirrhinum Plant Named `Keiananzurem`
USPP19087P2Antirrhinum Plant Named `Keianmilkwam`
USPP18624P2Petunia Plant Named ‘Sunsurfmomo’
USPP18616P2Petunia Plant Named `Sunsurfpafure`
USPP18323P3Petunia Plant Named `Keipunes`
USPP18089P2Petunia Plant Named `Keiwhihus`
USPP17735P2Petunia Plant Named ‘Sunsurfbv’
USPP17681P2Petunia Plant Named `Sunhore`
USPP17645P2Petunia Plant Named `Sunsurfgigabu`
USPP16810P2Petunia Plant Named ‘Keipamiphihas’
USPP16803P2Petunia Plant Named `Sunremi`
USPP16805P2Petunia Plant Named `Sunsurfbupa`
USPP16804P2Petunia Plant Named `Keiametsum`
USPP16785P2Petunia Plant Named `Keipawhihis`
USPP16786P2Petunia Plant Named ‘Sunsurflala’
USPP16682P2Petunia Plant Named `Sunsurfpapu`
US20060121477A1Method For Detection Of Micro-Metastasis
USPP16468P3Petunia Plant Named `Sunrovein`
USPP16358P3Petunia Plant Named `Sunpurple`
USPP16355P3Petunia Plant Named `Suncopablue`
USPP16297P3Petunia Plant Named `Sunpatiki`
USPP15756P3Petunia Plant Named ‘Sunpatire’
USPP14748P2Petunia Plant Named Keipabukas
USPP14136P3Petunia Plant Named “Keireom’
USPP13968P3Petunia Plant Named `Keiyeul`
USPP13850P3Petunia Plant Named `Keidopuel`
USPP13542P2Petunia Plant Named `Keilavbu`
JP5762513B2Taxi Assistance Devices And Taxi Assistance Programs
JP2014163143ACurve Part Track Structure And Ballast Reshaping Material
JP4813348B2Back Filling Method For Buried Pipe
JP4808225B2Insulating Blocks, Transport Systems, Jack-Up Systems
JP3609401B2Plant Unit, Plant Storage Method In The Plant Unit

What are Keisei Electric Railway key innovation segments?

What Technologies are Covered by Keisei Electric Railway?

The chart below distributes patents filed by Keisei Electric Railway in different countries on the basis of the technology protected in patents. It also represents the markets where Keisei Electric Railway thinks it’s important to protect particular technology inventions.

R&D Focus: How has Keisei Electric Railway search focus changed over the years?


Interested in knowing about the areas of innovation that are being protected by Keisei Electric Railway?

Table of Content

Insights you may find interesting

Related Articles

Was this article helpful?

Leave a Comment

Fill the form to get the details:

Our comprehensive report provides an in-depth look into the patent portfolio. The report includes a breakdown of the patent portfolio across various technologies, listing the patent along with brief summaries of each patent's technology.