• All sections
  • F - Mechanical engineeringlightingheatingweaponsblasting
  • F16H - Gearing
  • F16H 15/38 - Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B in which the member B has a curved friction surface formed as a surface of a body of revolution generated by a curve which is neither a circular arc centered on its axis of revolution nor a straight line with concave friction surface, e.g. a hollow toroid surface with two members B having hollow toroid surfaces opposite to each other, the member or members A being adjustably mounted between the surfaces

Patent holdings for IPC class F16H 15/38

Total number of patents in this class: 245

10-year publication summary

24
16
20
15
8
11
7
5
4
0
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Principal owners for this class

Owner
All patents
This class
NSK Ltd.
2791
47
Kawasaki Jukogyo Kabushiki Kaisha (trading as Kawasaki Heavy Industries, Ltd.)
3050
32
Kawasaki Heavy Industries, Limited
1654
25
Transmission Cvtcorp Inc.
60
23
Allison Transmission, Inc.
839
22
Torotrak (Development) Limited
44
21
Mazaro NV
14
10
Honda Motor Co., Ltd.
25425
6
Allison Transmission, Inc.
10
6
Volkswagen AG
7348
5
Infinitrak, LLC
6
4
Ultimate Transmissions Pty Ltd
6
4
Univance Corporation
116
4
GM Global Technology Operations LLC
15150
2
Rolls-Royce PLC
3131
2
JTEKT Corporation
2517
2
Aktiebolaget SKF
2976
2
TOYOTA JIDOSHA KABUSHIKI KAISHA (also trading as TOYOTA MOTOR CORPORATION)
12758
2
Supra Lumina Technologies Inc.
5
2
Argent Automation Inc.
4
2
Other owners 22