"supporting partner" is correct and usable in written English.
It is typically used to refer to a person who helps or supports another person in some way. For example: "Brad was my supporting partner throughout the entire project."
Working as a partner at venture capital firm Kleiner Perkins Caufield & Byers since 1999, Aileen Lee has been the lead or supporting partner with KPCB-backed companies Bloom Energy, Blue Nile and Friendster, among others.
The characters Tamaki, Konomi, Manaka and Sasara appear as playable characters in the 2011 fighting game Aquapazza: Aquaplus Dream Match, while Yuma and Ma-ryan appear as supporting partner characters.
UNICEF is mobilizing and supporting partner organizations to identify and reunite with their families, hundreds of children separated following the exodus from the capital.
UNICEF is mobilizing and supporting partner organizations to identify and reunite with their families the hundreds of children who have lost their parents during the fighting.
The strategy of supporting partner agencies with cold chain equipment, supplies, vaccines and training has proven to be successful in achieving high immunization rates in a very difficult setting.
Social interaction can be incorporated in the rehabilitation training by providing a social play medium which requires a patient to collaborate with his/her supporting partner in performing the training exercises.
They should look toward setting up a trust school with supporting partners, sponsors and possibly even a new name.
Entrepreneur A divides business partners into "real business partners," who bring in project-specific knowledge, and "supporting partners".
The "supporting partners," such as lawyers, and consultants, who mainly provide supporting and rather business-general services, are, in the entrepreneur's perception, relatively easy to replace.
He frequently takes supporting partners from one project into another, e.g., the three banks that have been financial backers of 50%% of his projects.
A complete list of supporting partners can be found at http://www.codgene.ca/partners.php.php
