Tokyo Central Patent Office
Public patent records for Tokyo Central Patent Office, 1978–2024: 1,105 patent families shared with other firms for 103 clients (applicants). Sign in to explore the app’s partner network, selected filing periods, filing activity, and client relationships.
- Patent families shared with other firms
- 1,105
- 1978–2024. One family can be counted more than once.
- Activity 2016–2020
- 124
- Distinct families per year, summed over the last five complete years. 2021 onward is still being published.
- Clients (applicants)
- 103
- Applicants named on these families, all recorded years. Not a full client list.
- Firms shown below
- 6
Activity trend (2017–2026)
- Scope
- Tokyo Central Patent Office · Japan
- Filing years
- 2017–2024
- Unit
- Distinct families per year
2021–2026 are preliminary. Patent filings publish about 18 months after filing, and foreign filings can enter later, so these counts are still filling in.
Each family counts once within a year. A family may recur in multiple years.
View annual counts
| Year | Distinct families per year |
|---|---|
| 2017 | 9 |
| 2018 | 9 |
| 2019 | 40 |
| 2020 | 53 |
| 2021 · preliminary | 36 |
| 2022 · preliminary | 15 |
| 2023 · preliminary | 3 |
| 2024 · preliminary | 7 |
Technology fields it focuses on
Fields where this firm's share of patent families is well above the average for Japan firms, 2018–2022.
| Field | Share of its families | vs Japan average |
|---|---|---|
| Image or video recognition or understandingIPC/CPC G06V | 22.3% | 8.9× |
| Image data processing or generation, in generalIPC/CPC G06T | 22.1% | 5.4× |
| Radio direction-finding; radio navigation; determining distance or velocity by use of radio waves; locating or presence-detecting by use of the reflection or reradiation of radio waves; analogous arrangements using other wavesIPC/CPC G01S | 7.3% | 4.1× |
| Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bondsIPC/CPC C08F | 9.2% | 3.7× |
| Layered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, formIPC/CPC B32B | 8.0% | 2.4× |
Yearly counts for 2018–2022, added up: 426 of 494 families carry an IPC or CPC classification. Shares are of those classified families, and one family can fall in several fields.
Frequently associated firms
Firms that most often appear on the same patent families. One family can be counted more than once, so these are not unique totals.
Similar Japan firms
Yearly counts since 1990, added up. One family can be counted more than once.
- Arga Patent Office弁理士法人アルガ特許事務所1,109 shared patent families
- Kaiyu International Patent Office特許業務法人快友国際特許事務所1,109 shared patent families
- Hanabusa Patent & Trademark Office弁理士法人はなぶさ特許商標事務所1,098 shared patent families
- Tokumoto Patent Office1,119 shared patent families
- Hirota Patent Office廣田特許事務所1,123 shared patent families
Compare Tokyo Central Patent Office side by side with
Explore the workspace profile
Open the app’s partner network, filing-year filters, and filing activity for Tokyo Central Patent Office. App counts follow the filing years and corridors you choose, so they can differ from this public profile.
Filing activity
Recorded patent families across the filing years you choose.
Full partner list
Every observed counterpart for the filing period you choose.
Named clients
Applicant relationships behind the exchange counts.