Kisa Patent & Trademark Office
弁理士法人きさ特許商標事務所
Public patent records for Kisa Patent & Trademark Office, 1980–2025: 728 patent families shared with other firms for 106 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
- 728
- 1980–2025. One family can be counted more than once.
- Activity 2016–2020
- 79
- Distinct families per year, summed over the last five complete years. 2021 onward is still being published.
- Clients (applicants)
- 106
- Applicants named on these families, all recorded years. Not a full client list.
- Firms shown below
- 4
Activity trend (2017–2026)
- Scope
- Kisa Patent & Trademark Office · Japan
- Filing years
- 2017–2025
- 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 | 4 |
| 2018 | 7 |
| 2019 | 26 |
| 2020 | 38 |
| 2021 · preliminary | 26 |
| 2022 · preliminary | 37 |
| 2023 · preliminary | 11 |
| 2024 · preliminary | 5 |
| 2025 · preliminary | 1 |
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 |
|---|---|---|
| Air-conditioning; air-humidification; ventilation; use of air currents for screeningIPC/CPC F24F | 38.3% | 63.7× |
| Refrigeration machines, plants or systems; combined heating and refrigeration systems; heat pump systemsIPC/CPC F25B | 33.0% | 57.1× |
| Heat-exchange apparatus, not provided for in another subclass, in which the heat-exchange media do not come into direct contactIPC/CPC F28D | 14.1% | 36.7× |
Yearly counts for 2018–2022, added up: 467 of 743 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.
- 長沼特許事務所729 shared patent families
- IPX patent partners弁理士法人ＩＰＸ724 shared patent families
- FIELDS IP Attorneys PPC弁理士法人フィールズ国際特許事務所 新横浜オフィス733 shared patent families
- Kuroda International Patent Office黒田国際特許事務所733 shared patent families
- 遠山特許事務所733 shared patent families
Compare Kisa Patent & Trademark Office side by side with
Explore the workspace profile
Open the app’s partner network, filing-year filters, and filing activity for Kisa Patent & Trademark 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.