Virtual Marking
The following list of KACO product groups and product families is provided on this website to comply with virtual patent marking requirements in various jurisdictions, including the regulations of the America Invents Act.
The listed product groups and product families may be protected by one or more granted patents, utility models, and/or pending patent applications in the USA and other countries.
Intellectual property coverage may vary depending on product configuration, country, and time.
KACO® trademarks and product family names—such as EvoLift®, FRed®, IOSS®, IOS®, RADIA®, AXIA®, or Sygumin®—serve to categorize the products and do not necessarily imply that every single listed intellectual property right is directly associated with that specific trademark.
This list may not be exhaustive. Other KACO products not listed here may also be protected by intellectual property rights.
Last updated: June 16, 2026
Radial shaft seals
RADIA®
Granted patents
- US 11 603 933 B2
- CN 109 958 771 B
- US 11 719 343 B2
- CN 111 828 637 B
- US 11 802 622 B2
- US 8 096 774 B2
- DE 10 2014 011 473 B3
Utility models
- DE 20 2019 005 194 U1
Axial seals
AXIA® / FRed®
Granted patents
- CN 113 090 758 B
- JP 6 360 655 B2
- CN 102 032 347 B
- JP 5 711 926 B2
- CN 103 174 668 B
- US 9 568 107 B2
Patent applications
- DE 10 2019 008 984 A1
Piston seals
Granted patents
- US 11 274 710 B2
- DE 10 2019 002 213 B4
- US 11 415 189 B2
Patent applications
- DE 10 2020 208 851 A1
- CN 111 734 755 A
Patent applications
- DE 10 2022 000 722 A1
- EP 3 859 193 A1
- DE 10 2020 000 632 A1
- CN 113 251 146 A
EvoLift®
- Pressure compensation elements
- Pressure compensation valves
- Battery components
Granted patents
- DE 10 2021 001 258 B4
- DE 10 2019 008 935 B4
- CN 112 709 849 B
- FR 2 957 396 B1
- GB 2 478 633 B
- US 8 739 833 B2
Patent applications
- DE 10 2022 003 358 A1
- CN 117 594 947 A
- DE 10 2021 003 923 A1
- EP 3 813 186 A1
- DE 10 2019 007 454 A1
- DE 10 2010 012 018 A1
- CN 102 192 346 A
- CN 115 693 010 A
IOSS®, IOS®
Patent applications
- DE 10 2021 005 144 A1
- DE 10 2021 005 910 A1
- CN 116 182 912 A
Granted patents
- DE 10 2020 004 682 B1
- CN 108 886 296 B
- US 11 070 114 B2
- US 10 840 778 B2
Patent applications
- DE 10 2021 003 540 A1
- EP 3 971 097 A1
- CN 114 256 643 A
- DE 10 2021 004 802 A1
- DE 10 2022 123 382 A1
- DE 10 2020 007 030 A1
- DE 10 2021 204 566 A1
- JP 2019-509007 A
- DE 10 2016 010 926 A1
- EP 3 424 134 A1
- CN 115 588 858 A
- DE 10 2022 003 022 A1
- DE 10 2021 001 160 A1
- CN 114 992 328 A
Sygumin®
Patent applications
- DE 10 2021 001 799 A1
- CN 115 199 753 A
