Esaki Patent Office
江崎特許事務所
Public patent records for Esaki Patent Office, 1920–2024: 4,727 patent families shared with other firms for 316 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
- 4,727
- 1920–2024. One family can be counted more than once.
- Activity 2016–2020
- 480
- Distinct families per year, summed over the last five complete years. 2021 onward is still being published.
- Clients (applicants)
- 316
- Applicants named on these families, all recorded years. Not a full client list.
- Firms shown below
- 5
Activity trend (2017–2026)
- Scope
- Esaki 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 | 57 |
| 2018 | 59 |
| 2019 | 144 |
| 2020 | 130 |
| 2021 · preliminary | 114 |
| 2022 · preliminary | 130 |
| 2023 · preliminary | 89 |
| 2024 · preliminary | 24 |
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 |
|---|---|---|
| Vehicle brake control systems or parts thereof; brake control systems or parts thereof, in general; arrangement of braking elements on vehicles in general; portable devices for preventing unwanted movement of vehicles; vehicle modifications to facilitate cooling of brakesIPC/CPC B60T | 4.0% | 11.3× |
| Conjoint control of vehicle sub-units of different type or different function; control systems specially adapted for hybrid vehicles; road vehicle drive control systems for purposes not related to the control of a particular sub-unitIPC/CPC B60W | 5.9% | 4.9× |
| Motor vehicles; trailersIPC/CPC B62D | 2.4% | 3.2× |
| Propulsion of electrically-propelled vehicles; supplying electric power for auxiliary equipment of electrically-propelled vehicles; electrodynamic brake systems for vehicles in general; magnetic suspension or levitation for vehicles; monitoring operating variables of electrically-propelled vehicles; electric safety devices for electrically-propelled vehiclesIPC/CPC B60L | 3.5% | 3.1× |
| Vehicles, vehicle fittings, or vehicle parts, not otherwise provided forIPC/CPC B60R | 3.4% | 3.0× |
Yearly counts for 2018–2022, added up: 1,282 of 1,591 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.
- Takaoka IP Patent Office高岡ＩＰ特許事務所4,626 shared patent families
- Okabe International Patent Office5,011 shared patent families
- Maeda Patent Office弁理士法人前田特許事務所4,421 shared patent families
- Akebono International Patent Office曙国際特許事務所4,170 shared patent families
- Hazuki International Patent Office4,142 shared patent families
Compare Esaki Patent Office side by side with
Explore the workspace profile
Open the app’s partner network, filing-year filters, and filing activity for Esaki 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.