Jennens and Bettridge
Jennens and Bettridge were also credited with developments in the preparation of pearl shell, suitable for use in the decoration of japanned wares. They also took out a patent for inlaying glass, gems, jewels, pearls, enamels and other decorative items into their japanned goods.
They made many advances in the decoration and style of japanned goods, and in 1844, they were described as one of the 'finest and most interesting factories in Birmingham, where japanned papier-mache is brought to a high degree of beauty' (The Penny Magazine, Dec 1844). They were one of the largest and most progressive factories with widespread influence.