Prime locations including the engine cover and sidepod were noticeably blank, with the exception of a single Williams logo and coffee brand Lavazza on the former.
Addressing the issue for a team that has finished last in the constructors' championship in each of the last three seasons, Capito confirmed talks are ongoing and that he hopes to be able to reveal a number of new names soon.
“We are very much focusing on developing the brand, positioning the brand this year," said Capito. "We have got great partners on board and there are some to come very soon, so you can expect some announcements.
“In general, I think the new ownership and the strategy we are going forward with is already attracting partners that are in contact with us and in negotiations going forward but it is too early to give you something.
“There will be some announcements soon.”
Aside from its poor performances on track in recent times, the team has undergone a major upheaval behind the scenes following the takeover in September last year of Dorilton Capital from the Williams family.
With adjustments still taking place, Capito has labelled this season as "a transitional year" ahead of the introduction of radical new aerodynamic regulations in 2022.
"We are realistic - there is no quick fix," added Capito. "What we are developing is a step-by-step, long-term plan to restore this great team to the front end of Formula 1.
"So while we will clearly still be racing as hard as we can in 2021, our focus is very much on building for the future from 2022 and beyond."
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