Brand name and corporate logo

We are a start up in the USA. Our main business is the distribution of engineered quartz slabs that will later be fabricated by third parties into kitchen and bath tops. We are looking to award the job of creating a brand for this product along with a logo for now. After we complete this stage we will need other work like website, brochures, etc. Our corporate name is not relevant (or we thing so) as we are only trying to create a brand for this specific product, that we dont want linked to our company name. Our customers are architect and designers and high end consumers. If you are interested pls provide information of a similar project you have recently completed for our review, projected time it will take you to complete, and process by which you come up with the final product. The logo and brand name will be fully owned by us and will be registered under trade mark and copy write laws.