CPC Subgroup Additional Only
A61M 2205/3331 Pressure; Flow
Full Title
General characteristics of the apparatus > Controlling, regulating or measuring > Pressure; Flow
9 direct subcodes
Child Classifications
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- A61M 2205/3334 Measuring or controlling the flow rate
- A61M 2205/3337 Controlling, regulating pressure or flow by means of a valve by-passing a pump
- A61M 2205/3341 stabilising pressure or flow to avoid excessive variation
- A61M 2205/3344 Measuring or controlling pressure at the body treatment site
- A61M 2205/3348 Pressure measurement using a water column
- A61M 2205/3351 Controlling upstream pump pressure
- A61M 2205/3355 Controlling downstream pump pressure
- A61M 2205/3358 Measuring barometric pressure, e.g. for compensation
- A61M 2205/3362 with minimised length of fluid lines; Taking into account the elastic expansion of fluid lines to increase accuracy
Top Applicants
Top 10 applicants by patent filingsfor class A61, 2013–2023, worldwide · Source: EPO PATSTAT
- PHILIPS ELECTRONICS NL 20,621
- NOVARTIS CH 15,792
- ROCHE CH 14,303
- COVIDIEN US 13,862
- HARVARD UNIVERSITY US 13,454
- UNIVERSITY OF CALIFORNIA US 12,798
- P&G (PROCTER & GAMBLE COMPANY) US 12,140
- L'OREAL FR 11,800
- OLYMPUS CORPORATION JP 9,894
- BOSTON SCIENTIFIC SCIMED US 9,513