Maritime navigation and radiocommunication equipment and systems - Digital interfaces - Part 420: Multiple talkers and multiple listeners - Ship systems interconnection - Companion standard requirements and basic companion standards (IEC 61162-420:2001)
Edition 2003-02-01

Radio frequency identification of animals. Standardization of injection sites for different animal species. Companion animals (cats and dogs)
Edition 2015-07-31

Telecontrol equipment and systems - Part 5-101: Transmission protocols - Companion standard for basic telecontrol tasks (Endorsed by AENOR in June of 2003.)
Edition 2003-06-01

Telecontrol equipment and systems - Part 5-101: Transmission protocols - Companion standard for basic telecontrol tasks (Endorsed by AENOR in April of 2016.)
Edition 2016-04-01

Maritime navigation and radiocommunication equipment and systems - Digital interfaces - Part 420: Multiple talkers and multiple listeners - Ship systems interconnection - Companion standard requirements and basic companion standards (Endorsed by AENOR in July of 2002.)
Edition 2002-07-01

Companion Flanges, Type A (External Pilot) and Type S (Internal Pilot)
Edition 2016-01-26

Carbon Fiber Fabric Repair Prepreg, 120 °C (250 °F) Vacuum Curing Part 5 - Purchasing Specification for Companion Non-Structural Glass Fiber Fabric Prepreg
Edition 2016-12-05

J2629 Companion Spreadsheet
Edition 2010-10-15

Communicating and consulting about risk (Companion to AS/NZS ISO 31000:2009)
Edition 2010