Nishikawa International Patent Office
西川国際特許事務所
Public patent records for Nishikawa International Patent Office, 1978–2024: 1,871 patent families shared with other firms for 194 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
- 1,871
- 1978–2024. One family can be counted more than once.
- Activity 2016–2020
- 401
- Distinct families per year, summed over the last five complete years. 2021 onward is still being published.
- Clients (applicants)
- 194
- Applicants named on these families, all recorded years. Not a full client list.
- Firms shown below
- 5
Activity trend (2017–2026)
- Scope
- Nishikawa International 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 | 82 |
| 2018 | 37 |
| 2019 | 124 |
| 2020 | 65 |
| 2021 · preliminary | 24 |
| 2022 · preliminary | 17 |
| 2023 · preliminary | 11 |
| 2024 · preliminary | 2 |
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 |
|---|---|---|
| Stereophonic systemsIPC/CPC H04S | 6.5% | 33.6× |
| Inorganic semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiationIPC/CPC H10F | 8.9% | 12.8× |
| Pictorial communication, e.g. televisionIPC/CPC H04N | 53.3% | 12.2× |
| Apparatus or arrangements for taking photographs or for projecting or viewing them; apparatus or arrangements employing analogous techniques using waves other than optical waves; accessories thereforIPC/CPC G03B | 6.9% | 8.1× |
| Image data processing or generation, in generalIPC/CPC G06T | 20.4% | 5.0× |
Yearly counts for 2018–2022, added up: 495 of 615 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.
- Morita Patent Office森田特許事務所1,912 shared patent families
- Toho International Patent & Law Office弁理士法人桐朋1,828 shared patent families
- Takashima International Patent Office Tokyo1,921 shared patent families
- Goto Patent Office弁理士法人後藤特許事務所1,820 shared patent families
- IP Firm SHUWA Patent Attorney Office1,809 shared patent families
Compare Nishikawa International Patent Office side by side with
Explore the workspace profile
Open the app’s partner network, filing-year filters, and filing activity for Nishikawa International 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.