Is the upside-down feature e.g. shampoo bottles or ketchup bottles patented. If so when and by whom?

Yes, the upside-down feature for certain bottles, such as ketchup and shampoo bottles, has been patented. One notable patent was granted to the company Procter & Gamble in 2001 for an upside-down shampoo bottle design, allowing consumers to dispense the product easily. Other companies have also filed patents for similar designs to enhance usability and convenience.